(INTERSIL LM105, LM305 Voltage Regulator FEATURES @ Output voltage adjustable from 4.5V to 40V (105) @ DC line regulation guaranteed at 0.03%/V @ Load regulation better than 0.1% GENERAL DESCRIPTION The Intersil 105/305 monolithic integrated circuit is a posi- tive voltage regulator. {t is a direct replacement for the 100/300 with an extra gain stage added for improved regulation. In contrast to the 100/300, the 105/305 re- quires no minimum toad current while permitting higher voltage operation by reducing standby current drain. SCHEMATIC DIAGRAM 7 = UNREGULATED INPUT BOORTER OUTPUT ~ CURRENT LIMIT as 1" REGULATED OUTPUT - COMPENSATION cn Sau Toown oe ss a 0K Feeosack REFERENCE BYPASS GROUND ORDERING INFORMATION Part TO-99 10 pin Di number Can Flatpak ce LM105 | LM105H* | LM105F LM105/D LM305 | LM305H LM305/D * Add /883B to order number if 8838 processing is desired. 5-23 Output current in excess of 10A possible by adding ex- ternal resistor Direct, piug-in replacement for 100/300 giving improved regulation The Intersil 105/305 can be used as either a linear or switching regulator circuit with output voltages greater than 4.5V. it features fast response to both load and iine tran- sients, and freedom from oscillations with varying resistive and reactive loads. PIN CONFIGURATIONS REGULATED OUTPUT ) CURRENT LIMIT (1) C) COMPENSATION () FEEDBACK UNREGULATED INPUT (s) REFERENCE BYPASS GROUND {outline dwg TO-99) TOP view NOTE: Pin 4 connected to case Fiat Package NO CONNECTION q NO CONNECTION BOOSTER OUTPUT CURRENT LIMIT UNREGULATED INPUT Gy REGULATED OUTPUT GROUND [7] COMPENSATION REFERENCE BYPASS [3] FEEDBACK TOP VIEW (outline dwg FB) NOTE: Pin 4 connected to bottom of packageLM105, LM305 INTERSIL ABSOLUTE MAXIMUM RATINGS 105 305 Input Voltage 50V 40V Input-Output Voltage Differential 40V 40V Power Dissipation (Note 1) 500 mw 5 500 mW Operating Junction Temperature Range -55C to +150C C to 70C Storage Temperature Range -65C to +150C = - 55C to 125C Lead Temperature (Soldering, 60 sec) 300C 300C. ELECTRICAL CHARACTERISTICS (Note 2) . 105 305 PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Input Voltage Range 8.5 50 8.0 40 Output Voltage Range 45 40 45 30 Output-Input Voltage 3.0 30 3.0 30 Vv Differential Load Regulation (Note 3)}O< Ig <12mMA Rec = 182, Ta = 25C 0.02 0.05 0.02 0.05 % 5 Rec = 102, Ta = 125C 0.03 0.1 ; % Rec = 182, Ta = -58C 0.03 0.1 % Rec = 152, Ta = 70C 0.03 0.1 % Rgc = 182, Ta = oc 0.03 0.1 % Line Regulation Vin - Vout < 5V 0.025 0.06 0.025 0.06 %/V Vin - Vout > 5V 0.015 0.03 0.05 0.03 %/V Temperature Stability -55C < T, <+125C 0.3 1.0 % Oe iw ry 5 0.6 < -0.02 < & a 5 2 3 2 5S 04 > w = > > T, 5 ~0.03 Ee zE & 2 < 0.2 2 5 2 Rgc = 1022 0.04 6 0 6 10 18 20 0 10 20 30 40 0 10 6200 (30 40Sts*SO LOAD CURRENT (mA) LOAD CURRENT (mA) OUTPUT CURRENT (ma) CURRENT LIMIT SENSE OPTIMUM DIVIDER _ VOLTAGE SHORT CIRCUIT CURRENT RESISTANCE VALUES z 98 32 RI/R2= 2KN w <5mA a s < E 0 Asc = 108 30 RV=4.01 od EB . a 8 os Z S x 28 3 30 > w S 3 oe oS 04 & Zz 26 Fi 3 2 & = 5 g 24 5 0.3 2 c g 5 10 22 a B 02 2.0 , -75 -50-25 0 25 50 75 100 125 150 -75 -50 -25 0 25 50 75 100 125 150 5 10 20 50 JUNCTION TEMPERATURE (C) JUNCTION TEMPERATURE (C) OUTPUT VOLTAGE REGULATOR DROPOUT SUPPLY VOLTAGE MINIMUM INPUT VOLTAGE VOLTAGE REJECTION 8.0 13 Ss of = Vv = Vout = 10V 2 our Rsc = 102 = 0.05 foe 79 Ta = 28C - = 3 = = Fe uo g 8 0.02 e e i, = 20mA Z 70 2 2 w 0.01 > > @ LE t te = 10mA < 0.005 3 5 no. 2 z $ 1 =5mA > Cre #10 pF + z 0.002 {> 120 He 60 " @ 0.001 -75 -50-25 0 25 60 75 100 125 -75 -50 -25 25 50 75 100 125 1 2 5 10 2 50 TEMPERATURE (C) "- TEMPERATURE (C) INPUT OUTPUT VOLTAGE DIFFERENTIAL (V} MINIMUM OUTPUT VOLTAGE STANDBY CURRENT DRAIN TRANSIENT RESPONSE 45 1.2 5S 0 & zs z = 40 Ea = ? . w e < Rec = 109 < g 2 40 AVin * 5V ba & a Vour = 10V 9 35 5 10 aw = Rise * 102 5 > < 400 Po Iu = 20mA 2 5 5 vee CL = BF tna * 1.0 mA . 3 =10V Z 30 Z o9 > dee & ze LOAD 25 o8 3 -400 -75 -50 -26 0 25 50 75 100 125 10 20 30 40 50 0 10 20 30 TEMPERATURE (C) INPUT VOLTAGE (V) TIME (us) *305 only guaranteed OC < Ta < 70C, Vin = 40V max, Vout = 30V max. 5-25LM105, LM305 TYPICAL APPLICATIONS* 140A Reguiator with Foldback Current Lirniting 4 aor OY on a3 ct 3a oF ow Lodi Ww na wv on nt ou 0 o a 4 " eat, 1 7 cr 7 av 2 a a ON sf | ae n = * tases Ww oo 1 os on a Pr ~ Sate tometer 1938 tare 27 on teat Enairaaring 4282123-2 mobyhaisnum sarmaiey core. *Pin connections shown are for TO-5 DEFINITION OF TERMS INPUT VOLTAGE RANGE: The range of DC input voltages over which the regulator will operate within specifications. , OUTPUT VOLTAGE RANGE: The range of regulated out- put voltages over which the specifications apply. OUTPUT-INPUT VOLTAGE DIFFERENTIAL: The volt- age difference between the unregulated input voltage and the regulated output voltage for which the regulator will operate within specifications. LINE REGULATION: The percentage change in regulated Output voltage for a change in input voltage. LOAD REGULATION: The percentage change in regulated output voltage for a change in load from the minimum toad to the maximum toad current specified. CURRENT-LIMIT SENSE VOLTAGE: The voltage across the current limit terminals required to cause the regulator 5-26 INIERSIL 1.0A Regulator with Protective Diodes fPromects apinet shart pat oF entercine fonts on uremptated Prenncts pices ingest velo corset (trreects mppiner ouyut woheags re Shunt Regulator to current-limit with a short circuited output. This voltage is used to determine the value of the external current-limit resistor when externa! booster transistors are used. TEMPERATURE STABILITY: The percentage change in output voltage for a thermal variation from room tempera- ture to either temperature extreme. FEEDBACK SENSE VOLTAGE: The votitage, referred to ground, on the feedback terminal of the regulator while it is operating in regulation. OUTPUT NOISE VOLTAGE: The average AC voltage at the output with constant load and no input ripple. STANDBY CURRENT DRAIN: That part of the operating current of the regulator which does not contribute to the load current. RIPPLE REJECTION: The line regulation for ac input signals at or above a given frequency with a specified value of bypass capacitor on the reference bypass terminal.