LM317L - Voltage Regulator Adjustable Output, Positive 100 …

1 Semiconductor Components Industries, LLC, 2013 April, 2021 Rev. 141 Publication Order Number: LM317L /DVoltage Regulator - Adjustable Output, Positive100 mALM317L, NCV317 LThe LM317L is an Adjustable 3 terminal Positive Voltage regulatorcapable of supplying in excess of 100 mA over an output Voltage rangeof V to 37 V. This Voltage Regulator is exceptionally easy to useand requires only two external resistors to set the output , it employs internal current limiting, thermal shutdown andsafe area compensation, making them essentially blow out LM317L serves a wide variety of applications including local,on card regulation.

2 This device can also be used to make aprogrammable output Regulator , or by connecting a fixed resistorbetween the adjustment and output, the LM317L can be used as aprecision current Output Current in Excess of 100 mA Output Adjustable Between V and 37 V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe Area Compensation Floating Operation for High Voltage Applications Standard 3 Lead Transistor Package Eliminates Stocking Many Fixed Voltages NCV Prefix for Automotive and Other Applications RequiringUnique Site and Control Change Requirements.

3 AEC Q100 Qualified and PPAP Capable These are Pb Free DevicesSimplified Application * Cin is required if Regulator is located an appreciable** distance from power supply filter.** CO is not needed for stability, however,** it does improve transient IAdj is controlled to less than 100 mA, the errorassociated with this term is negligible in most * +CO** + V 1)R2R1 )IAdj R2 ORDERING INFORMATIONSee detailed ordering and shipping information in the packagedimensions section on page 9 of this data CURRENTTHREE TERMINALADJUSTABLE POSITIVEVOLTAGE REGULATORTO 92Z SUFFIXCASE 29 10 Pin 1. Adjust2. Vout3. VinSOIC 8D SUFFIXCASE 75118 Pin 1.

4 Vin2. Vout3. Vout4. Adjust5. Vout7. Vout8. LEADSTRAIGHT LEAD3 See general marking information in the device markingsection on page 9 of this data MARKING INFORMATIONLM317L, RATINGSR atingSymbolValueUnitInput Output Voltage DifferentialVI VO40 VdcPower DissipationCase 29 (TO 92)TA = 25 CThermal Resistance, Junction to AmbientThermal Resistance, Junction to CaseCase 751 (SOIC 8) (Note 1)TA = 25 CThermal Resistance, Junction to AmbientThermal Resistance, Junction to CasePDRqJARqJCPDRqJARqJCInternally Limited16083 Internally Limited18045W C/W C/WW C/W C/WMaximum Junction TemperatureTJMAX+150 CStorage Temperature RangeTstg 65 to +150 CStresses exceeding those listed in the Maximum Ratings table may damage the device.

5 If any of these limits are exceeded, device functionalityshould not be assumed, damage may occur and reliability may be SOIC 8 Junction to Ambient Thermal Resistance is for minimum recommended pad size. Refer to Figure 24 for Thermal Resistancevariation versus pad This device series contains ESD protection and exceeds the following tests:Human Body Model, 2000 V per MIL STD 883, Method Model Method, 200 1. Representative Schematic DiagramLM317L, CHARACTERISTICS (VI VO = V; IO = 40 mA; TJ = Tlow to Thigh (Note 3); Imax and Pmax (Note 4); unless otherwise noted.) LM317L , LB, NCV317 LBCharacteristicsFigureSymbolMinTypMaxUn itLine Regulation (Note 5)TA = 25 C, V VI VO 40 V1 Regline Regulation (Note 5), TA = 25 C10 mA IO Imax LM317 LVO VVO V2 Regload VOAdjustment Pin Current3 IAdj 50100mAAdjustment Pin Current V VI VO 40 V, PD Pmax10 mA IO Imax LM317L1, 2 DIAdj V VI VO 40 V, PD Pmax10 mA IO Imax Regulation (Note 5), V VI VO 40 V1 Regline Regulation (Note 5)10 mA IO Imax LM317 LVO VVO V2 Regload VOTemperature Stability (Tlow TJ Thigh)

6 3TS % VOMinimum Load Current to Maintain Regulation (VI VO = 40 V)3 ILmin Output CurrentVI VO V, PD Pmax, Z PackageVI VO 40 V, PD Pmax, TA = 25 C, Z Package3 Imax100 20020 mARMS Noise, % of VOTA = 25 C, 10 Hz f 10 kHz N % VORipple Rejection (Note 6)VO = V, f = 120 HzCAdj = 10 mF, VO = V4RR60 8080 dBThermal Shutdown (Note 7) 180 CLong Term Stability, TJ = Thigh (Note 8)TA = 25 C for Endpoint Measurements3S Tlow to Thigh = 0 to +125 C for LM317L 40 to +125 C for LM317LB, NCV317LB4. Imax = 100 mAPmax = 625 mW5. Load and line regulation are specified at constant junction temperature.

7 Changes in VO due to heating effects must be taken into accountseparately. Pulse testing with low duty cycle is CAdj, when used, is connected between the adjustment pin and Thermal characteristics are not subject to production Since Long Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of averagestability from lot to , * Pulse Testing Required: 1% Duty Cycle is Regulation (%/V) =VOH - VOLx 100*VCCVIHVILVinVoutVOHVOLRL+1mFCO2401%R 1 AdjustR21% 2. Line Regulation and DIAdj/Line Test CircuitVOL* Pulse Testing Required: 1% Duty Cycle is Regulation (mV) = VO (min Load) -VO (max Load)Load Regulation (% VO) =VO (min Load) - VO (max Load)X100VO (min Load)VO (max Load) +*RL(max Load)RL(min Load)VoutR12401%Vin*VinIAdjILFigure 3.

8 Load Regulation and DIAdj/Load Test CircuitVO (min Load)Pulse Testing Required:1% Duty Cycle is +1mFCORLCinR21%To Calculate R2:Vout = ISET R2 + VAssume ISET = 4. Standard Test CircuitLM317L, = *1N4002CO+ **10mF+* D1 Discharges CAdj if Output is Shorted to = 120 HzVO**CAdj provides an AC ground to the adjust 5. Ripple Rejection Test CircuitVin-Vout, INPUT-OUTPUT VOLTAGEDIFFERENTIAL (V)IO, OUTPUT CURRENT (A)Figure 6. Load RegulationFigure 7. Ripple RejectionFigure 8. Current LimitFigure 9. Dropout VoutTJ, JUNCTION TEMPERATURE ( C), OUTPUT Voltage CHANGE (%)Vin = 45 VVout = VIL = mA to 40 mAVin = 10 VVout = VIL = mA to 100 mA80706050RR, RIPPLE REJECTION (dB)-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C)IL = 40 mAf = 120 HzVout = 10 VVin = 14 V to 24 V-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C) = mAIL = 100 1020304050 Vin-Vout, INPUT-OUTPUT Voltage DIFFERENTIAL (V)TJ = 25 CTJ = 150 CLM317L, , QUIESCENT CURRENT (mA)Figure 10.

9 Minimum Operating CurrentFigure 11. Ripple Rejection versus , INPUT-OUTPUT Voltage DIFFERENTIAL (V)TJ = 55 CTJ = 25 CTJ = 150 k10 k100 Mf, FREQUENCY (Hz)RR, RIPPLE REJECTION (dB)IL = 40 mAVin = V VPPVout = VNOISE Voltage ( V) Vout, OUTPUT Voltage CHANGE (%) IAdj, ADJUSTMENT PIN CURRENT ( A) Figure 12. Temperature StabilityFigure 13. Adjustment Pin CurrentFigure 14. Line RegulationFigure 15. Output Noise-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C) , REFERENCE Voltage (V)Vin = VVout = VrefIL = mA-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C)807065605550454035 Vin = VVout = Vref IL = 10 mA IL = 100 mA-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C) = V to VVout = VrefIL = 5 mA-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C) 100 Hz to 10 kHzLM317L, , OUTPUT Voltage DEVIATION (V)CL = mF; CAdj = 10 mFFigure 16.

10 Line Transient ResponseFigure 17. Load Transient 10203040t, TIME (ms)ICURRENT (mA)L, LOADCL = 1 mF; CAdj = 10 mFVin = 15 VVout = 10 VINL = 50 mATJ = 25 CHANGE (V) in VVOLTAGE DEVIATION (V)out, INPUT, OUTPUTCL = mF;CAdj = 10 , TIME (ms)Vout = 10 VIL = 50 mATJ = 25 CCL = 0;Without CAdjAPPLICATIONS INFORMATIONB asic Circuit OperationThe LM317L is a 3 terminal floating Regulator . Inoperation, the LM317L develops and maintains a V reference (Vref) between its output and adjustmentterminals. This reference Voltage is converted to aprogramming current (IPROG) by R1 (see Figure 13), and thisconstant current flows through R2 to ground.