1
3
2
GND
IN
SHDN
SENSE/ADJ
OUT
5
4
KTT PACKAGE
(TOP VIEW)
DCQ PACKAGE
(TOP VIEW)
1
3
2
GND
IN
SHDN
SENSE/ADJ
OUT
5
4
GND
6
1
3
2
OUT
IN
GND
GND
DCY PACKAGE
(TOP VIEW)
4
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
1.5-A LOW-NOISE FAST-TRANSIENT-RESPONSE LOW-DROPOUT REGULATOR
Check for Samples: TL1963A-xx
1FEATURES
2•Optimized for Fast Transient Response
•Output Current: 1.5 A
•Dropout Voltage: 340 mV
•Low Noise: 40 μVRMS (10 Hz to 100 kHz)
•1-mA Quiescent Current
•No Protection Diodes Needed
•Controlled Quiescent Current in Dropout
•Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V,
and 3.3 V
•Adjustable Output Voltage: 1.21 V to 20 V
•Less Than 1-μA Quiescent Current in
Shutdown
•Stable with 10-μF Output Capacitor
•Stable with Ceramic Capacitors
•Reverse-Battery Protection
•No Reverse Current
•Thermal Limiting
APPLICATIONS
•3.3-V to 2.5-V Logic Power Supplies
•Post Regulator for Switching Supplies
DESCRIPTION/ORDERING INFORMATION
The TL1963A-xx is a low-dropout (LDO) regulator optimized for fast transient response. The device can supply
1.5 A of output current with a dropout voltage of 340 mV. Operating quiescent current is 1 mA, dropping to less
than 1 μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other
regulators. In addition to fast transient response, the TL1963A-xx regulators have very low output noise, which
makes them ideal for sensitive RF supply applications.
Output voltage range is from 1.21 V to 20 V. The TL1963A-xx regulators are stable with output capacitors as low
as 10 μF. Small ceramic capacitors can be used without the necessary addition of ESR, as is common with other
regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and
reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, and 3.3 V,
and as an adjustable device with a 1.21-V reference voltage. The TL1963A-xx regulators are available in the
5-pin TO-263 (KTT), 6-pin SOT-223 (DCQ), and 3-pin SOT-223 (DCY) packages.
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2PowerPAD, PowerFLEX are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Copyright ©2008–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
ORDERING INFORMATION (1)
VOUT
TAPACKAGE(2) ORDERABLE PART NUMBER TOP-SIDE MARKING
(TYP)
TO-263 –KTT Reel of 500 TL1963A-15KTTR TL1963A-15
1.5 V SOT-223 –DCQ Reel of 2500 TL1963A-15DCQR 1963A-15
SOT-223 –DCY Reel of 2500 TL1963A-15DCYR TF
TO-263 –KTT Reel of 500 TL1963A-18KTTR TL1963A-18
1.8 V SOT-223 –DCQ Reel of 2500 TL1963A-18DCQR 1963A-18
SOT-223 –DCY Reel of 2500 TL1963A-18DCYR TG
TO-263 –KTT Reel of 500 TL1963A-25KTTR TL1963A-25
–40°C to 125°C2.5 V SOT-223 –DCQ Reel of 2500 TL1963A-25DCQR 1963A-25
SOT-223 –DCY Reel of 2500 TL1963A-25DCYR TH
TO-263 –KTT Reel of 500 TL1963A-33KTTR TL1963A-33
3.3 V SOT-223 –DCQ Reel of 2500 TL1963A-33DCQR 1963A-33
SOT-223 –DCY Reel of 2500 TL1963A-33DCYR TJ
TO-263 –KTT Reel of 500 TL1963AKTTR TL1963A
ADJ SOT-223 –DCQ Reel of 2500 TL1963ADCQR TL1963A
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
Table 1. TERMINAL FUNCTIONS
NO.
NAME DESCRIPTION
DCQ DCY KTT
Shutdown. The SHDN pin is used to put the TL1963A-xx regulators into a low-power shutdown
state. The output is off when the SHDN pin is pulled low. The SHDN pin can be driven either by
5-V logic or open-collector logic with a pullup resistor. The pullup resistor is required to supply
SHDN 1 —1the pullup current of the open-collector gate, normally several microamperes, and the SHDN pin
current, typically 3 μA. If unused, the SHDN pin must be connected to VIN. The device is in the
low-power shutdown state if the SHDN pin is not connected.
Input. Power is supplied to the device through the IN pin. A bypass capacitor is required on this
pin if the device is more than six inches away from the main input filter capacitor. In general, the
output impedance of a battery rises with frequency, so it is advisable to include a bypass
capacitor in battery-powered circuits. A bypass capacitor (ceramic) in the range of 1 μF to
IN 2 1 2 10 μF is sufficient. The TL1963A-xx regulators are designed to withstand reverse voltages on
the IN pin with respect to ground and the OUT pin. In the case of a reverse input, which can
happen if a battery is plugged in backwards, the device acts as if there is a diode in series with
its input. There is no reverse current flow into the regulator, and no reverse voltage appears at
the load. The device protects both itself and the load.
GND 3, 6 2, 4 3 Ground
Output. The output supplies power to the load. A minimum output capacitor (ceramic) of 10 μF
OUT 4 3 4 is required to prevent oscillations. Larger output capacitors are required for applications with
large transient loads to limit peak voltage transients.
Adjust. For the adjustable TL1963A, this is the input to the error amplifier. This pin is clamped
ADJ 5 —5 internally to ±7 V. It has a bias current of 3 μA that flows into the pin. The ADJ pin voltage is
1.21 V referenced to ground, and the output voltage range is 1.21 V to 20 V.
Sense. For fixed voltage versions of the TL1963A-xx (TL1963A-1.5, TL1963A-1.8,
TL1963A-2.5, and TL1963A-3.3), the SENSE pin is the input to the error amplifier. Optimum
regulation is obtained at the point where the SENSE pin is connected to the OUT pin of the
regulator. In critical applications, small voltage drops are caused by the resistance (RP) of PC
traces between the regulator and the load. These may be eliminated by connecting the SENSE
SENSE 5 —5pin to the output at the load as shown in Figure 32. Note that the voltage drop across the
external PC traces adds to the dropout voltage of the regulator. The SENSE pin bias current is
600 μA at the rated output voltage. The SENSE pin can be pulled below ground (as in a dual
supply system in which the regulator load is returned to a negative supply) and still allow the
device to start and operate.
For the KTT package, the exposed thermal pad is connected to ground and must be soldered to
Thermal Pad — — the PCB for rated thermal performance.
2Copyright ©2008–2011, Texas Instruments Incorporated
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
IN –20 V to 20 V
OUT –20 V to 20 V
Input-to-output differential(2) –20 V to 20 V
VIN Input voltage range SENSE –20 V to 20 V
ADJ –7 V to 7 V
SHDN –20 V to 20 V
tshort Output short-circuit duration Indefinite
Tlead Maximum lead temperature 10-second soldering time 300°C
TJOperating virtual-junction temperature range –40°C to 125°C
Tstg Storage temperature range –65°C to 150°C
(1) Stresses beyond those listed under "absolute maximum ratings"may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions"is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Absolute maximum input-to-output differential voltage cannot be achieved with all combinations of rated IN pin and OUT pin voltages.
With the IN pin at 20 V, the OUT pin may not be pulled below 0 V. The total measured voltage from IN to OUT cannot exceed ±20 V.
PACKAGE THERMAL DATA(1)
PACKAGE BOARD θJA θJC θJP (2)
SOT-223 (DCY) High K, JESD 51-5 48.3°C/W 30.6°C/W —
SOT-223 (DCQ) High K, JESD 51-5 53°C/W 15°C/W —
TO-263 (KTT) High K, JESD 51-5 26.5°C/W 24.1°C/W 0.38°C/W
(1) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD= (TJ(max) –TA)/θJA. Operating at the absolute maximum TJof 150°C can affect reliability.
(2) For packages with exposed thermal pads, such as QFN, PowerPAD™, and PowerFLEX™,θJP is defined as the thermal resistance
between the die junction and the bottom of the exposed pad.
Copyright ©2008–2011, Texas Instruments Incorporated 3
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
ELECTRICAL CHARACTERISTICS(1)
Over operating temperature range TJ=–40°C to 125°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TJMIN TYP(2) MAX UNIT
ILOAD = 0.5 A 25°C 1.9
Minimum input voltage(3)
VIN V
(4) ILOAD = 1.5 A Full range 2.1 2.5
VIN = 2.21 V, ILOAD = 1 mA 25°C 1.477 1.500 1.523
TL1963A-1.5 VIN = 2.5 V to 20 V, Full range 1.447 1.500 1.545
ILOAD = 1 mA to 1.5 A
VIN = 2.3 V, ILOAD = 1 mA 25°C 1.773 1.800 1.827
TL1963A-1.8 VIN = 2.8 V to 20 V, Full range 1.737 1.800 1.854
ILOAD = 1 mA to 1.5 A
VOUT Regulated output voltage(5) V
VIN = 3 V, ILOAD = 1 mA 25°C 2.462 2.500 2.538
TL1963A-2.5 VIN = 3.5 V to 20 V, Full range 2.412 2.500 2.575
ILOAD = 1 mA to 1.5 A
VIN = 3.8 V, ILOAD = 1 mA 25°C 3.250 3.300 3.350
TL1963A-3.3 VIN = 4.3 V to 20 V, Full range 3.200 3.300 3.400
ILOAD = 1 mA to 1.5 A
VIN = 2.21 V, ILOAD = 1 mA 25°C 1.192 1.21 1.228
VADJ ADJ pin voltage(3) (5) TL1963A V
VIN = 2.5 V to 20 V, Full range 1.174 1.21 1.246
ILOAD = 1 mA to 1.5 A
ΔVIN = 2.21 V to 20 V,
TL1963A-1.5 Full range 2 6
ILOAD = 1 mA
ΔVIN = 2.3 V to 20 V,
TL1963A-1.8 Full range 2.5 7
ILOAD = 1 mA
ΔVIN = 3 V to 20 V,
Line regulation TL1963A-2.5 Full range 3 10 mV
ILOAD = 1 mA
ΔVIN = 3.8 V to 20 V,
TL1963A-3.3 Full range 3.5 10
ILOAD = 1 mA
ΔVIN = 2.21 V to 20 V,
TL1963A(3) Full range 1.5 5
ILOAD = 1 mA 25°C 2 9
VIN = 2.5 V,
TL1963A-1.5 ΔILOAD = 1 mA to 1.5 A Full range 18
25°C 2 10
VIN = 2.8 V,
TL1963A-1.8 ΔILOAD = 1 mA to 1.5 A Full range 20
25°C 2.5 15
VIN = 3.5 V,
Load regulation TL1963A-2.5 mV
ΔILOAD = 1 mA to 1.5 A Full range 30
25°C 3 20
VIN = 4.3 V,
TL1963A-3.3 ΔILOAD = 1 mA to 1.5 A Full range 70
25°C 2 8
VIN = 2.5 V,
TL1963A(3) ΔILOAD = 1 mA to 1.5 A Full range 18
(1) The TL1963A-xx regulators are tested and specified under pulse load conditions such that TJ≉TA. The TL1963A-xx is fully tested at
TA= 25°C. Performance at –40°C and 125°C is specified by design, characterization, and correlation with statistical process controls.
(2) Typical values represent the likely parametric nominal values determined at the time of characterization. Typical values depend on the
application and configuration and may vary over time. Typical values are not ensured on production material.
(3) The TL1963A (adjustable version) is tested and specified for these conditions with the ADJ pin connected to the OUT pin.
(4) For the TL1963A, TL1963A-1.5 and TL1963A-1.8, dropout voltages are limited by the minimum input voltage specification under some
output voltage/load conditions.
(5) Operating conditions are limited by maximum junction temperature. The regulated output voltage specification does not apply for all
possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current, the input voltage range must be limited.
4Copyright ©2008–2011, Texas Instruments Incorporated
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
ELECTRICAL CHARACTERISTICS(1) (continued)
Over operating temperature range TJ=–40°C to 125°C (unless otherwise noted)
PARAMETER TEST CONDITIONS TJMIN TYP(2) MAX UNIT
25°C 0.02 0.06
ILOAD = 1 mA Full range 0.1
25°C 0.1 0.17
ILOAD = 100 mA Full range 0.22
Dropout voltage(4) (6) (7)
VDROPOUT V
VIN = VOUT(NOMINAL) 25°C 0.19 0.27
ILOAD = 500 mA Full range 0.35
25°C 0.34 0.45
ILOAD = 1.5 A Full range 0.55
ILOAD = 0 mA Full range 1 1.5
ILOAD = 1 mA Full range 1.1 1.6
GND pin current(7) (8)
IGND ILOAD = 100 mA Full range 3.8 5.5 mA
VIN = VOUT(NOMINAL) + 1 ILOAD = 500 mA Full range 15 25
ILOAD = 1.5 A Full range 80 120
COUT = 10 μF, ILOAD = 1.5 A,
eNOutput voltage noise 25°C 40 μVRMS
BW= 10 Hz to 100 kHz
IADJ ADJ pin bias current(3) (9) 25°C 3 10 μA
VOUT = OFF to ON Full range 0.9 2
Shutdown threshold V
VOUT = ON to OFF Full range 0.25 0.75
VSHDN = 0 V 25°C 0.01 1
ISHDN SHDN pin current μA
VSHDN = 20 V 25°C 3 30
Quiescent current in VIN = 6 V, V SHDN = 0 V 25°C 0.01 1 μA
shutdown VIN –VOUT = 1.5 V (avg), VRIPPLE = 0.5 VP-P,
Ripple rejection 25°C 55 63 dB
fRIPPLE = 120 Hz, ILOAD = 0.75 A
VIN = 7 V, VOUT = 0 V 25°C 2
ILIMIT Current limit A
VIN = VOUT(NOMINAL) + 1 Full range 1.6
Input reverse leakage
IIL VIN =–20 V, VOUT = 0 V Full range 1 mA
current TL1963A-1.5 VOUT = 1.5 V, VIN <1.5 V 25°C 600 1200
TL1963A-1.8 VOUT = 1.8 V, VIN <1.8 V 25°C 600 1200
IRO Reverse output current(10) TL1963A-2.5 VOUT = 2.5 V, VIN <2.5 V 25°C 600 1200 μA
TL1963A-3.3 VOUT = 3.3 V, VIN <3.3 V 25°C 600 1200
TL1963A VOUT = 1.21 V, VIN <1.21 V 25°C 300 600
(6) Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In
dropout, the output voltage is equal to: VIN –VDROPOUT.
(7) To satisfy requirements for minimum input voltage, the TL1963A (adjustable version) is tested and specified for these conditions with an
external resistor divider (two 4.12-kΩresistors) for an output voltage of 2.4 V. The external resistor divider adds a 300-mA DC load on
the output.
(8) GND pin current is tested with VIN = (VOUT(NOMINAL) + 1 V) and a current source load. The GND pin current decreases at higher input
voltages.
(9) ADJ pin bias current flows into the ADJ pin.
(10) Reverse output current is tested with the IN pin grounded and the OUT pin forced to the rated output voltage. This current flows into the
OUT pin and out the GND pin.
Copyright ©2008–2011, Texas Instruments Incorporated 5
0
120
240
360
480
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Dropout Voltage – mV
IOUT = 1.5 A
IOUT = 0.5 A
IOUT = 100 mA
IOUT = 1 mA
0
50
100
150
200
250
300
350
400
450
500
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Output Current – A
Dropout Voltage – mV
TA= 25°C
TA= 125°C
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Quiescent Current – mA
VIN = 6 V
IOUT = 0 A
VSHDN = VIN
VOUT Adjustable
VOUT Fixed 3.3 V
TL1963A (Adjustable)
TL1963A-3.3
1.76
1.77
1.78
1.79
1.8
1.81
1.82
1.83
1.84
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Output Voltage – V
VOUT Fixed 1.8 V
IOUT = 1 mA
TL1963A-1.8
I = 1 mA
OUT
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
TYPICAL CHARACTERISTICS
DROPOUT VOLTAGE DROPOUT VOLTAGE
vs vs
OUTPUT CURRENT TEMPERATURE
Figure 1. Figure 2.
QUIESCENT CURRENT OUTPUT VOLTAGE
vs vs
TEMPERATURE TEMPERATURE
Figure 3. Figure 4.
6Copyright ©2008–2011, Texas Instruments Incorporated
2.42
2.44
2.46
2.48
2.5
2.52
2.54
2.56
2.58
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Output Voltage – V
VOUT Fixed 2.5 V
IOUT = 1 mA
TL1963A-2.5
I = 1 mA
OUT
3.22
3.24
3.26
3.28
3.3
3.32
3.34
3.36
3.38
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Output Voltage – V
VOUT Fixed 3.3 V
IOUT = 1 mA
TL1963A-3.3
I = 1 mA
OUT
1.19
1.195
1.2
1.205
1.21
1.215
1.22
1.225
1.23
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Output Voltage – V
VOUT Adjustable
IOUT = 1 mA
VIN = 6 V
TL1963A (Adjustable)
I = 1 mA
V = 6 V
OUT
IN
0
0.2
0.4
0.6
0.8
1
1.2
0 2 4 6 8 10 12 14 16 18 20
Input Voltage – V
Quiescent Current – mA
TJ= 25°C
ROUT = 4.3 k
VSHDN = VIN
VOUT Adjustable
W
TL1963A (Adjustable)
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
TYPICAL CHARACTERISTICS (continued)
OUTPUT VOLTAGE OUTPUT VOLTAGE
vs vs
TEMPERATURE TEMPERATURE
Figure 5. Figure 6.
OUTPUT VOLTAGE QUIESCENT CURRENT
vs vs
TEMPERATURE INPUT VOLTAGE
Figure 7. Figure 8.
Copyright ©2008–2011, Texas Instruments Incorporated 7
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5 6 7 8 9 10
Input Voltage – V
Ground Current – mA
TJ= 25°C
VSHDN = VIN
VOUT Adjustable
VOUT = 1.21 V
IOUT = 1.5 A
IOUT = 1 A
IOUT = 0.5 A
TL1963A (Adjustable)
0
2
4
6
8
10
0 1 2 3 4 5 6 7 8 9 10
Input Voltage – V
Ground Current – mA
TJ= 25°C
VSHDN = VIN
VOUT Adjustable
VOUT = 1.21 V
IOUT = 300 mA
IOUT = 100 mA
IOUT = 10 mA
TL1963A (Adjustable)
0
5
10
15
20
25
30
35
40
0 1 2 3 4 5 6 7 8 9 10
Input Voltage – V
Ground Current – mA
TJ= 25°C
VSHDN = VIN
VOUT Fixed 3.3 V
IOUT = 300 mA
IOUT = 100 mA
IOUT = 10 mA
TL1963A-3.3
0
20
40
60
80
100
120
0 1 2 3 4 5 6 7 8 9 10
Input Voltage – V
Ground Current – mA
TJ= 25°C
VSHDN = VIN
VOUT Fixed 3.3 V
IOUT = 1.5 A
IOUT = 1 A
IOUT = 0.5 A
TL1963A-3.3
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
GROUND CURRENT GROUND CURRENT
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 9. Figure 10.
GROUND CURRENT GROUND CURRENT
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 11. Figure 12.
8Copyright ©2008–2011, Texas Instruments Incorporated
0
0.25
0.5
0.75
1
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
SHDN Input Current – µA
VSHDN = 0 V
0
10
20
30
40
50
60
70
80
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Output Current – A
Ground Current – mA
VIN = VOUT(nom) + 1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
SHDN Input Voltage – V
IOUT = 1 mA
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2
2.25
2.5
0 2 4 6 8 10 12 14 16 18 20
SHDN Input Voltage – V
SHDN Input Current – µA
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
TYPICAL CHARACTERISTICS (continued)
GROUND CURRENT SHDN INPUT CURRENT
vs vs
OUTPUT CURRENT TEMPERATURE
Figure 13. Figure 14.
SHDN INPUT CURRENT SHDN THRESHOLD (OFF TO ON)
vs vs
SHDN INPUT VOLTAGE TEMPERATURE
Figure 15. Figure 16.
Copyright ©2008–2011, Texas Instruments Incorporated 9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
ADJ Bias Current – µA
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
SHDN Input Voltage – V
IOUT = 1 mA
0
1
2
3
4
5
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Current Limit – A
VIN = 7 V
VOUT = 0 V
0
0.5
1
1.5
2
2.5
3
3.5
0 2 4 6 8 10 12 14 16 18 20
Input/Output Differential Voltage – V
Current Limit – A
?V
OUT = 100 mV
TA= -40°C
TA= 25°C
TA= 125°C
D
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
SHDN THRESHOLD (ON TO OFF) ADJ BIAS CURRENT
vs vs
TEMPERATURE TEMPERATURE
Figure 17. Figure 18.
CURRENT LIMIT CURRENT LIMIT
vs vs
INPUT/OUTPUT DIFFERENTIAL VOLTAGE TEMPERATURE
Figure 19. Figure 20.
10 Copyright ©2008–2011, Texas Instruments Incorporated
-2
0
2
4
6
8
10
12
0 2 4 6 8 10
Output Voltage – V
Reverse Output Current – mA
TJ= 25°C
VIN = 0 V
Current flows into OUT pin
VOUT Adjustable
VOUT = VADJ
VOUT Fixed 3.3 V
VOUT = VFB
TL1963A (Adjustable)
V = V
OUT ADJ
TL1963A-3.3
V = V
OUT FB
0
200
400
600
800
1000
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Reverse Output Current – µA
VIN = 0 V
VOUT Adjustable
VOUT = 1.21 V
VOUT Fixed 3.3V
VOUT = 3.3 V
TL1963A (Adjustable)
V = 1.21 V
OUT
TL1963A-3.3
V = 3.3 V
OUT
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
-50 -25 0 25 50 75 100 125
TA– Free-Air Temperature – °C
Load Regulation – mV
VOUT Adjustable
VOUT Fixed 3.3 V
IOUT = 1.5 A
VOUT Fixed 2.5 V
VOUT Fixed 1.8 V
TL1963A (Adjustable)
TL1963A-3.3
TL1963A-2.5
TL1963A-1.8
0
10
20
30
40
50
60
70
80
10 100 1000 10000 100000 100000
Frequency – Hz
Ripple Rejection – dB
VIN = 2.7 V
CIN = 0
COUT = 10 µF
IOUT = 750 mA
VRipple = 0.05 Vpp
10 100 1k 10k 100k 1M
V = 2.7 V
C = 0
C = 10 µF (ceramic)
I = 750 mA
V = 0.05 V
T = 25°C
IN
IN
OUT
OUT
Ripple PP
A
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
TYPICAL CHARACTERISTICS (continued)
REVERSE OUTPUT CURRENT REVERSE OUTPUT CURRENT
vs vs
OUTPUT VOLTAGE TEMPERATURE
Figure 21. Figure 22.
RIPPLE REJECTION LOAD REGULATION
vs vs
FREQUENCY TEMPERATURE
Figure 23. Figure 24.
Copyright ©2008–2011, Texas Instruments Incorporated 11
500 µs per division
Load Current
Change in
Outupt Voltage
VIN = 4.3 V
CIN = 10 µF
COUT = 10 µF
VOUT
IOUT
V = 4.3 V
C = 10 µF
C = 10 µF (ceramic)
IN
IN
OUT
10 100 1k 10k 100k
0.01
0.1
1
Frequency - Hz
Output Noise Voltage – µVRMS
COUT = 10 µF
IOUT = 1.5 A
VOUT Adjustable
VOUT Fixed 3.3 V
TL1963A (Adjustable)
TL1963A-3.3
C = 10 µF (ceramic)
I = 1.5 A
OUT
OUT
Output Noise Voltage – µV/ HzÖ
500 µs per division
VIN = 4.3 V
CIN = 10 µF
COUT = 10 µF
1.5 A
10 mA
20 mV
0 mV
-20 mV
Load Current
Change in
Outupt Voltage
VOUT
IOUT
V = 4.3 V
C = 10 µF
C = 10 µF (ceramic)
IN
IN
OUT
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
OUTPUT NOISE VOLTAGE
vs
FREQUENCY LOAD TRANSIENT RESPONSE
Figure 25. Figure 26.
LOAD TRANSIENT RESPONSE
Figure 27.
12 Copyright ©2008–2011, Texas Instruments Incorporated
IN OUT
SENSE
GND
VIN > 3 V
2.5 V at 1.5 A
SHDN
TL1963A-2.5
10 µF
(ceramic)
10 µF
(ceramic)
+
C1
10 µF
R3
2 kW
R2
80.6 kW
R4
2.2 kW
R5
0.01 W
R6
2.2 kW
TL1963A-1.8
SHDN
OUT
SENSE
-
+
R8
100 kW
LOAD
R7
470 kW
C3
1 µF
C2
3.3 µF
IN
GND
V > 2.7 V
IN
R1
1 kW
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
APPLICATION INFORMATION
The TL1963A-xx series are 1.5-A LDO regulators optimized for fast transient response. The devices are capable
of supplying 1.5 A at a dropout voltage of 340 mV. The low operating quiescent current (1 mA) drops to less
than 1 μA in shutdown. In addition to the low quiescent current, the TL1963A-xx regulators incorporate several
protection features which make them ideal for use in battery-powered systems. The devices are protected
against both reverse input and reverse output voltages. In battery-backup applications where the output can be
held up by a backup battery when the input is pulled to ground, the TL1963A-xx acts as if it has a diode in series
with its output and prevents reverse current flow. Additionally, in dual-supply applications where the regulator
load is returned to a negative supply, the output can be pulled below ground by as much as 20 V and still allow
the device to start and operate.
Typical Applications
Figure 29. 3.3 V to 2.5 V Regulator
NOTE: All capacitors are ceramic.
Figure 30. Adjustable Current Source
Copyright ©2008–2011, Texas Instruments Incorporated 13
TL1963A-3.3
SHDN
OUT
SENSE
SHDN
OUT
R1
0.01 W
R2
0.01 W
R3
2.2 kW
R4
2.2 kW
R5
1 kW
R6
6.65 kW
R7
4.12 kW
C2
22 µF
SHDN
3.3 V at 3 A
–
+
IN
GND
V > 3.7 V
IN C1
10 µF
C3
0.01 µF
TL1963A
IN
SENSE
GND
IN OUT
SENSE
GND
SHDN
TL1963A
Load
VIN
RP
RP
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
NOTE: All capacitors are ceramic.
Figure 31. Paralleling Regulators for Higher Output Current
Figure 32. Kelvin Sense Connection
Adjustable Operation
The adjustable version of the TL1963A has an output voltage range of 1.21 V to 20 V. The output voltage is set
by the ratio of two external resistors as shown in Figure 33. The device maintains the voltage at the ADJ pin at
1.21 V referenced to ground. The current in R1 is then equal to 1.21 V / R1, and the current in R2 is the current
in R1 plus the ADJ pin bias current. The ADJ pin bias current, 3 μA at 25°C, flows through R2 into the ADJ pin.
The output voltage can be calculated using the formula shown in Figure 33. The value of R1 should be less than
4.17 kΩto minimize errors in the output voltage caused by the ADJ pin bias current. Note that in shutdown the
output is turned off, and the divider current is zero.
14 Copyright ©2008–2011, Texas Instruments Incorporated
IN OUT
ADJ
GND
TL1963A R2
VIN
VOUT
R1
V = 1.21 V
OUT 1R2
R1
)
(IADJ)(R2)
V = 1.21 V
ADJ
I = 3 µA at 25°C
ADJ
Output range = 1.21 V to 20 V
++
)
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
Figure 33. Adjustable Operation
The adjustable device is tested and specified with the ADJ pin tied to the OUT pin for an output voltage of
1.21 V. Specifications for output voltages greater than 1.21 V are proportional to the ratio of the desired output
voltage to 1.21 V: VOUT/1.21 V. For example, load regulation for an output current change of 1 mA to 1.5 A
is –3 mV (typ) at VOUT = 1.21 V. At VOUT = 5 V, load regulation is:
(5 V/1.21 V)(–3 mV) = –12.4 mV
Output Capacitance and Transient Response
The TL1963A-xx regulators are designed to be stable with a wide range of output capacitors. The ESR of the
output capacitor affects stability, most notably with small capacitors. A minimum output capacitor of 10 μF with
an ESR of 3 Ωor less is recommended to prevent oscillations. Larger values of output capacitance can decrease
the peak deviations and provide improved transient response for larger load current changes. Bypass capacitors,
used to decouple individual components powered by the TL1963A-xx, increase the effective output capacitor
value.
Extra consideration must be given to the use of ceramic capacitors. Ceramic capacitors are manufactured with a
variety of dielectrics, each with different behavior over temperature and applied voltage. The most common
dielectrics used are Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics are good for providing high
capacitances in a small package, but exhibit strong voltage and temperature coefficients. When used with a 5-V
regulator, a 10-μF Y5V capacitor can exhibit an effective value as low as 1 μF to 2 μF over the operating
temperature range. The X5R and X7R dielectrics result in more stable characteristics and are more suitable for
use as the output capacitor. The X7R type has better stability across temperature, while the X5R is less
expensive and is available in higher values.
Voltage and temperature coefficients are not the only sources of problems. Some ceramic capacitors have a
piezoelectric response. A piezoelectric device generates voltage across its terminals due to mechanical stress,
similar to the way a piezoelectric accelerometer or microphone works. For a ceramic capacitor the stress can be
induced by vibrations in the system or thermal transients.
Overload Recovery
Like many IC power regulators, the TL1963A-xx has safe operating area protection. The safe area protection
decreases the current limit as input-to-output voltage increases and keeps the power transistor inside a safe
operating region for all values of input-to-output voltage. The protection is designed to provide some output
current at all values of input-to-output voltage up to the device breakdown.
When power is first turned on, as the input voltage rises, the output follows the input, allowing the regulator to
start up into very heavy loads. During start up, as the input voltage is rising, the input-to-output voltage
differential is small, allowing the regulator to supply large output currents. With a high input voltage, a problem
can occur wherein removal of an output short does not allow the output voltage to recover. Other regulators also
exhibit this phenomenon, so it is not unique to the TL1963A-xx.
Copyright ©2008–2011, Texas Instruments Incorporated 15
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
The problem occurs with a heavy output load when the input voltage is high and the output voltage is low.
Common situations are immediately after the removal of a short circuit or when the shutdown pin is pulled high
after the input voltage has already been turned on. The load line for such a load may intersect the output current
curve at two points. If this happens, there are two stable output operating points for the regulator. With this
double intersection, the input power supply may need to be cycled down to zero and brought up again to make
the output recover.
Output Voltage Noise
The TL1963A-xx regulators have been designed to provide low output voltage noise over the 10-Hz to 100-kHz
bandwidth while operating at full load. Output voltage noise is typically 40 nV/√Hz over this frequency bandwidth
for the TL1963A (adjustable version). For higher output voltages (generated by using a resistor divider), the
output voltage noise is gained up accordingly. This results in RMS noise over the 10-Hz to 100-kHz bandwidth of
14 μVRMS for the TL1963A, increasing to 38 μVRMS for the TL1963A-3.3.
Higher values of output voltage noise may be measured when care is not exercised with regards to circuit layout
and testing. Crosstalk from nearby traces can induce unwanted noise onto the output of the TL1963A-xx.
Power-supply ripple rejection must also be considered; the TL1963A-xx regulators do not have unlimited
power-supply rejection and pass a small portion of the input noise through to the output.
Thermal Considerations
The power handling capability of the device is limited by the maximum rated junction temperature (125°C). The
power dissipated by the device is made up of two components:
1. Output current multiplied by the input/output voltage differential: IOUT(VIN –VOUT)
2. GND pin current multiplied by the input voltage: IGNDVIN.
The GND pin current can be found using the GND Pin Current graphs in Typical Characteristics. Power
dissipation is equal to the sum of the two components listed above.
The TL1963A-xx series regulators have internal thermal limiting designed to protect the device during overload
conditions. For continuous normal conditions, the maximum junction temperature rating of 125°C must not be
exceeded. It is important to give careful consideration to all sources of thermal resistance from junction to
ambient. Additional heat sources mounted nearby must also be considered.
For surface-mount devices, heat sinking is accomplished by using the heat-spreading capabilities of the PC
board and its copper traces. Copper board stiffeners and plated through-holes also can be used to spread the
heat generated by power devices.
Table 2 lists thermal resistance for several different board sizes and copper areas. All measurements were taken
in still air on 1/16-inch FR-4 board with one-ounce copper.
Table 2. KTT Package (5-Pin TO-263)
COPPER AREA THERMAL RESISTANCE
BOARD AREA (JUNCTION TO AMBIENT)
TOPSIDE(1) BACKSIDE
2500 mm22500 mm22500 mm223°C/W
1000 mm22500 mm22500 mm225°C/W
125 mm22500 mm22500 mm233°C/W
(1) Device is mounted on topside.
16 Copyright ©2008–2011, Texas Instruments Incorporated
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
Calculating Junction Temperature
Example: Given an output voltage of 3.3 V, an input voltage range of 4 V to 6 V, an output current range of 0 mA
to 500 mA, and a maximum ambient temperature of 50°C, what is the maximum junction temperature?
The power dissipated by the device is equal to:
IOUT(MAX)(VIN(MAX) –VOUT)+IGND(VIN(MAX))
where,
IOUT(MAX) = 500 mA
VIN(MAX) =6V
IGND at (IOUT = 500 mA, VIN =6V)=10mA
So, P = 500 mA (6 V –3.3 V) + 10 mA (6 V) = 1.41 W
Using a KTT package, the thermal resistance is in the range of 23°C/W to 33°C/W, depending on the copper
area. So the junction temperature rise above ambient is approximately equal to:
1.41 W ×28°C/W = 39.5°C
The maximum junction temperature is then be equal to the maximum junction-temperature rise above ambient
plus the maximum ambient temperature or:
TJMAX = 50°C + 39.5°C = 89.5°C
Protection Features
The TL1963A-xx regulators incorporate several protection features that make them ideal for use in
battery-powered circuits. In addition to the normal protection features associated with monolithic regulators, such
as current limiting and thermal limiting, the devices are protected against reverse input voltages, reverse output
voltages and reverse voltages from output to input.
Current limit protection and thermal overload protection are intended to protect the device against current
overload conditions at the output of the device. For normal operation, the junction temperature should not exceed
125°C.
The input of the device withstands reverse voltages of 20 V. Current flow into the device is limited to less than
1 mA (typically less than 100 μA), and no negative voltage appears at the output. The device protects both itself
and the load. This provides protection against batteries that can be plugged in backward.
The output of the TL1963A-xx can be pulled below ground without damaging the device. If the input is left open
circuit or grounded, the output can be pulled below ground by 20 V. For fixed voltage versions, the output acts
like a large resistor, typically 5 kΩor higher, limiting current flow to typically less than 600 μA. For adjustable
versions, the output acts like an open circuit; no current flows out of the pin. If the input is powered by a voltage
source, the output sources the short-circuit current of the device and protects itself by thermal limiting. In this
case, grounding the SHDN pin turns off the device and stops the output from sourcing the short-circuit current.
The ADJ pin of the adjustable device can be pulled above or below ground by as much as 7 V without damaging
the device. If the input is left open circuit or grounded, the ADJ pin acts like an open circuit when pulled below
ground and like a large resistor (typically 5 kΩ) in series with a diode when pulled above ground.
In situations where the ADJ pin is connected to a resistor divider that would pull the ADJ pin above its 7-V clamp
voltage if the output is pulled high, the ADJ pin input current must be limited to less than 5 mA. For example, a
resistor divider is used to provide a regulated 1.5-V output from the 1.21-V reference when the output is forced to
20 V. The top resistor of the resistor divider must be chosen to limit the current into the ADJ pin to less than
5 mA when the ADJ pin is at 7 V. The 13-V difference between OUT and ADJ pins divided by the 5-mA
maximum current into the ADJ pin yields a minimum top resistor value of 2.6 kΩ.
In circuits where a backup battery is required, several different input/output conditions can occur. The output
voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage, or is left
open circuit.
Copyright ©2008–2011, Texas Instruments Incorporated 17
TL1963A-xx
SLVS719F –JUNE 2008–REVISED MAY 2011
www.ti.com
When the IN pin of the TL1963A-xx is forced below the OUT pin or the OUT pin is pulled above the IN pin, input
current typically drops to less than 2 μA. This can happen if the input of the device is connected to a discharged
(low voltage) battery and the output is held up by either a backup battery or a second regulator circuit. The state
of the SHDN pin has no effect on the reverse output current when the output is pulled above the input.
18 Copyright ©2008–2011, Texas Instruments Incorporated
TL1963A-xx
www.ti.com
SLVS719F –JUNE 2008–REVISED MAY 2011
REVISION HISTORY
Changes from Revision E (August 2009) to Revision F Page
•Changed package designator from "TO-223"to "SOT-223"to fix typographical error. ........................................................ 2
Copyright ©2008–2011, Texas Instruments Incorporated 19
PACKAGE OPTION ADDENDUM
www.ti.com 14-Jul-2011
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
TL1963A-15DCQR ACTIVE SOT-223 DCQ 6 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-15DCQT ACTIVE SOT-223 DCQ 6 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-15DCYR ACTIVE SOT-223 DCY 4 2500 Green (RoHS
& no Sb/Br) CU SN Level-2-260C-1 YEAR
TL1963A-15DCYT ACTIVE SOT-223 DCY 4 250 Green (RoHS
& no Sb/Br) CU SN Level-2-260C-1 YEAR
TL1963A-15KTTR ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-15KTTRG3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-15KTTT PREVIEW DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
TL1963A-18DCQR ACTIVE SOT-223 DCQ 6 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-18DCQT ACTIVE SOT-223 DCQ 6 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-18DCYR ACTIVE SOT-223 DCY 4 2500 Green (RoHS
& no Sb/Br) CU SN Level-2-260C-1 YEAR
TL1963A-18KTTR ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-18KTTRG3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-18KTTT PREVIEW DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
TL1963A-25DCQR ACTIVE SOT-223 DCQ 6 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-25DCQT ACTIVE SOT-223 DCQ 6 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-25DCYR ACTIVE SOT-223 DCY 4 2500 Green (RoHS
& no Sb/Br) CU SN Level-2-260C-1 YEAR
TL1963A-25DCYT ACTIVE SOT-223 DCY 4 250 Green (RoHS
& no Sb/Br) CU SN Level-2-260C-1 YEAR
PACKAGE OPTION ADDENDUM
www.ti.com 14-Jul-2011
Addendum-Page 2
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
TL1963A-25KTTR ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-25KTTRG3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-25KTTT PREVIEW DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
TL1963A-33DCQR ACTIVE SOT-223 DCQ 6 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-33DCQT ACTIVE SOT-223 DCQ 6 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963A-33DCYR ACTIVE SOT-223 DCY 4 2500 Green (RoHS
& no Sb/Br) CU SN Level-2-260C-1 YEAR
TL1963A-33DCYT PREVIEW SOT-223 DCY 4 250 TBD Call TI Call TI
TL1963A-33KTTR ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963A-33KTTT PREVIEW DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
TL1963ADCQR ACTIVE SOT-223 DCQ 6 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963ADCQT ACTIVE SOT-223 DCQ 6 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
TL1963AKTTR ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
TL1963AKTTRG3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS
& no Sb/Br) CU SN Level-3-245C-168 HR
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
PACKAGE OPTION ADDENDUM
www.ti.com 14-Jul-2011
Addendum-Page 3
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF TL1963A :
•Automotive: TL1963A-Q1
NOTE: Qualified Version Definitions:
•Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
TL1963A-15DCQR SOT-223 DCQ 6 2500 330.0 12.4 6.8 7.3 1.88 8.0 12.0 Q3
TL1963A-15DCQT SOT-223 DCQ 6 250 177.8 12.4 7.05 7.45 1.88 8.0 12.0 Q3
TL1963A-15DCYR SOT-223 DCY 4 2500 330.0 12.4 7.05 7.4 1.9 8.0 12.0 Q3
TL1963A-15KTTR DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2
TL1963A-18DCQR SOT-223 DCQ 6 2500 330.0 12.4 6.8 7.3 1.88 8.0 12.0 Q3
TL1963A-18DCQT SOT-223 DCQ 6 250 177.8 12.4 7.05 7.45 1.88 8.0 12.0 Q3
TL1963A-18DCYR SOT-223 DCY 4 2500 330.0 12.4 7.05 7.4 1.9 8.0 12.0 Q3
TL1963A-18KTTR DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2
TL1963A-25DCQR SOT-223 DCQ 6 2500 330.0 12.4 6.8 7.3 1.88 8.0 12.0 Q3
TL1963A-25DCQT SOT-223 DCQ 6 250 177.8 12.4 7.05 7.45 1.88 8.0 12.0 Q3
TL1963A-25DCYR SOT-223 DCY 4 2500 330.0 12.4 7.05 7.4 1.9 8.0 12.0 Q3
TL1963A-25KTTR DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2
TL1963A-33DCQR SOT-223 DCQ 6 2500 330.0 12.4 6.8 7.3 1.88 8.0 12.0 Q3
TL1963A-33DCQT SOT-223 DCQ 6 250 177.8 12.4 7.05 7.45 1.88 8.0 12.0 Q3
TL1963A-33DCYR SOT-223 DCY 4 2500 330.0 12.4 7.05 7.4 1.9 8.0 12.0 Q3
TL1963A-33KTTR DDPAK/ KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2
PACKAGE MATERIALS INFORMATION
www.ti.com 18-Feb-2012
Pack Materials-Page 1
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
TO-263
TL1963ADCQR SOT-223 DCQ 6 2500 330.0 12.4 6.8 7.3 1.88 8.0 12.0 Q3
TL1963ADCQT SOT-223 DCQ 6 250 177.8 12.4 7.05 7.45 1.88 8.0 12.0 Q3
TL1963AKTTR DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TL1963A-15DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0
TL1963A-15DCQT SOT-223 DCQ 6 250 180.0 180.0 85.0
TL1963A-15DCYR SOT-223 DCY 4 2500 340.0 340.0 38.0
TL1963A-15KTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0
TL1963A-18DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0
TL1963A-18DCQT SOT-223 DCQ 6 250 180.0 180.0 85.0
TL1963A-18DCYR SOT-223 DCY 4 2500 340.0 340.0 38.0
TL1963A-18KTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0
TL1963A-25DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0
TL1963A-25DCQT SOT-223 DCQ 6 250 180.0 180.0 85.0
TL1963A-25DCYR SOT-223 DCY 4 2500 340.0 340.0 38.0
TL1963A-25KTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 18-Feb-2012
Pack Materials-Page 2
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TL1963A-33DCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0
TL1963A-33DCQT SOT-223 DCQ 6 250 180.0 180.0 85.0
TL1963A-33DCYR SOT-223 DCY 4 2500 340.0 340.0 38.0
TL1963A-33KTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0
TL1963ADCQR SOT-223 DCQ 6 2500 358.0 335.0 35.0
TL1963ADCQT SOT-223 DCQ 6 250 180.0 180.0 85.0
TL1963AKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 18-Feb-2012
Pack Materials-Page 3
MECHANICAL DATA
MPDS094A – APRIL 2001 – REVISED JUNE 2002
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DCY (R-PDSO-G4) PLASTIC SMALL-OUTLINE
4202506/B 06/2002
6,30 (0.248)
6,70 (0.264)
2,90 (0.114)
3,10 (0.122)
6,70 (0.264)
7,30 (0.287) 3,70 (0.146)
3,30 (0.130)
0,02 (0.0008)
0,10 (0.0040)
1,50 (0.059)
1,70 (0.067)
0,23 (0.009)
0,35 (0.014)
1 2 3
4
0,66 (0.026)
0,84 (0.033)
1,80 (0.071) MAX
Seating Plane
0°–10°
Gauge Plane
0,75 (0.030) MIN
0,25 (0.010)
0,08 (0.003)
0,10 (0.004) M
2,30 (0.091)
4,60 (0.181) M
0,10 (0.004)
NOTES: A. All linear dimensions are in millimeters (inches).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion.
D. Falls within JEDEC TO-261 Variation AA.
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