www.fairchildsemi.com LM317L 3-Terminal 0.1A Positive Adjustable Regulator Features Description * * * * * * The LM317L is a 3-terminal adjustable positive voltage regulator capable of supplying in excess of 100mA over an output voltage range of 1 .2V to 37V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Output Current in Excess of 100mA Output Adjustable Between 1.2V and 37V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe Area Compensation Floating Operation For High Voltage Applications TO-92 1 1. Adj 2. Output 3. Input 8-SOP 1 1. Input 2.3.6.7. Output 4. Adj 5.8. NC Internal Block Diagram Vin Input 3 + - Voltage Reference Protection Circuitry Rlimit 2 Vo Output 1 Vadj Rev. 1.0.3 (c)2011 Fairchild Semiconductor Corporation LM317L Absolute Maximum Ratings Parameter Symbol Value Unit Input-Output Voltage Differential VI - V O 40 V Power Dissipation PD Internally limited W Operating Junction Temperature Range Tj 0 ~ +125 C TSTG -65 ~ +125 C Storage Temperature Range Electrical Characteristics (VI - VO = 5V, IO = 40mA, 0C TJ +125C, PDMAX = 625mW, unless otherwise specified) Parameter Line Regulation (Note1) Load Regulation (Note1) Adjustment Pin Current Symbol Rline Rload Conditions Min. Typ. Max. TA = +25C 3V VI - VO 40V - 0.01 0.04 3V VI - VO 40V - 0.02 0.07 TA = +25C 10mA IO 100mA VO 5V VO 5V - 5 0.1 25 0.5 mV %/VO 10mA IO 100mA VO 5V VO 5V - 20 0.3 70 1.5 mV %/VO - 50 100 A - 0.2 5 A 1.20 1.25 1.30 V - 0.7 - % - 3.5 10 mA VI - VO 15V, PD < PDMAX 100 200 - VI - VO 40V PD < PDMAX, TA = +25C 25 50 - - 0.003 - %/VO 66 65 80 - dB dB - 0.3 - % IADJ - Adjustment Pin Current Change IADJ 3V VI - VO 40V 10mA IO 100mA PD < PDMAX Reference Voltage VREF 3V < VI - VO < 40V 10mA IO 100mA PD PDMAX Temperature Stability Minimum Load Current to Maintain Regulation Maximum Output Current STT IL(MIN) IO(MAX) VI - VO = 40V RMS Noise, % of VOUT eN TA = +25C, 10Hz < f < 10kHz Ripple Rejection RR VO = 10V, f = 120Hz without CADJ CADJ = 10uF Long-Term Stability ST TJ = +125C, 1000Hours Unit %/V mA Note: 1. Load and Line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. 2 LM317L Typical Application D1 1N4002 Vo OUTPUT LM317L INPUT + 1.0uF 120 VADJ 1k TTL CONTROL KSP2222 720 MINIMUM Vo = 1.25V Figure 1. 5V Electronic Shutdown Regulator D1 protects the device during an input short circuit. Vo LM317L OUTPUT INPUT 240 1N4001 50k VADJ KSP2907 R2 + 10uF Figure 2. Slow Turn-On Regulator Io R1 Vo R2 LM317L OUTPUT INPUT VADJ IADJ Figure 3. Current Regulator I I V REF 1.25V = ----------------- + I --------------- OMAX R1 ADJ R1 OMIN V REF 1.25V = ---------------------- + I --------------------- R1 + R2 ADJ R1 + R2 5mA < I O < 500mA 3 LM317L Mechanical Dimensions Package TO-92 +0.25 4.58 0.20 4.58 -0.15 14.47 0.40 0.46 0.10 1.27TYP [1.27 0.20] 1.27TYP [1.27 0.20] 4 (0.25) +0.10 0.38 -0.05 1.02 0.10 3.86MAX 3.60 0.20 (R2.29) +0.10 0.38 -0.05 LM317L Mechanical Dimensions (Continued) Package 8-SOP MIN #5 1.80 MAX 0.071 5.72 0.225 3.95 0.20 0.156 0.008 0~ 8 +0.10 0.15 -0.05 +0.004 0.006 -0.002 MAX0.10 MAX0.004 6.00 0.30 0.236 0.012 0.41 0.10 0.016 0.004 #4 1.27 0.050 #8 5.13 MAX 0.202 #1 4.92 0.20 0.194 0.008 ( 0.56 ) 0.022 1.55 0.20 0.061 0.008 0.1~0.25 0.004~0.001 0.50 0.20 0.020 0.008 5 LM317L Ordering Information Product Number Package LM317LZ TO-92 LM317LM 8-SOP Operating Temperature 0C to +125C DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 10/18/11 0.0m 001 Stock#DSxxxxxxxx (c) 2011 Fairchild Semiconductor Corporation