Voltage Regulator - Adjustable Output, Positive 500 A

1 Semiconductor Components Industries, LLC, 2014 October, 2019 Rev. 261 Publication Order Number:LM317M/DLM317M, NCV317MA,NCV317 MVoltage Regulator - Adjustable Output, Positive500 mAThe LM317M is an Adjustable three terminal Positive voltageregulator capable of supplying in excess of 500 mA over an outputvoltage range of V to 37 V. This Voltage Regulator is exceptionallyeasy to use and requires only two external resistors to set the outputvoltage. Further, it employs internal current limiting, thermalshutdown and safe area compensation, making it essentially blow LM317M serves a wide variety of applications including local,on card regulation. This device also makes an especially simpleadjustable switching Regulator , a programmable output Regulator , or byconnecting a fixed resistor between the adjustment and output, theLM317M can be used as a precision current Output Current in Excess of 500 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 Eliminates Stocking Many Fixed Voltages NCV Prefix for Automotive and Other Applications RequiringUnique Site and Control Change Requirements; AEC Q100 Qualified and PPAP Capable These are Pb Free DevicesFigure 1.

2 Simplified 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 error associated with thisterm is negligible in most * **+ + V 1)R2R1 )IAdj R2TO 220 ABT SUFFIXCASE 221AB123 PIN ASSIGNMENT123 VinAdjustVoutORDERING INFORMATIONSee detailed ordering and shipping information in the packagedimensions section on page 10 of this data Surface (shown as terminal 4 incase outline drawing) is connected to Pin 223ST SUFFIXCASE 318 EDPAKDT SUFFIXCASE 369 CHeatsink surfaceconnected to Pin general marking information in the device markingsection on page 11 of this data MARKING INFORMATIONLM317M, NCV317MA, RATINGS (TA = 25 C, unless otherwise noted.

3 RatingSymbolValueUnitInput Output Voltage DifferentialVI VO40 VdcPower Dissipation (Package Limitation) (Note 1)Plastic Package, T Suffix, Case 221 ATA = 25 CThermal Resistance, Junction to AirThermal Resistance, Junction to CasePlastic Package, DT Suffix, Case 369 CTA = 25 CThermal Resistance, Junction to AirThermal Resistance, Junction to CasePlastic Package, ST Suffix, Case 318 ETA = 25 CThermal Resistance, Junction to AirThermal Resistance, Junction to CasePDqJAqJCPDqJAqJCPDqJAqJCInternally Limited24515 C/W C/W C/W C/W 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. If any of these limits are exceeded, device functionalityshould not be assumed, damage may occur and reliability may be Figure 25 provides thermal resistance versus PC board pad CHARACTERISTICS (VI VO = V; IO = A, TJ = Tlow to Thigh (Note 2), unless otherwise noted.)

4 CharacteristicsFigureSymbolLM317M/LM317M B/NCV317 MBUnitMinTypMaxLine Regulation (Note 3) (TA = 25 C, V VI VO 40 V)3 Regline Regulation (Note 3)TA = 25 C, 10 mA IO AVO VVO V4 Regload VOAdjustment Pin Current5 IAdj 50100mAAdjustment Pin Current V VI VO 40 V, 10 mA IL A, PD Pmax3, 4 DIAdj Voltage V VI VO 40 V, 10 mA IL A, PD Regulation V VI VO 40 V (Note 3)3 Regline Regulation 10 mA IO A (Note 3)VO VVO V4 Regload VOTemperature Stability (Tlow TJ Thigh)5TS % VOMinimum Load Current to Maintain Regulation (VI VO = 40 V)5 ILmin Output CurrentVI VO 15 V, PD PmaxVI VO = 40 V, PD Pmax, TA = 25 ARMS Noise, % of VO (TA = 25 C, 10 Hz f 10 kHz) N % VORipple Rejection, VO = 10 V, f = 120 Hz (Note 4)Without CAdjCAdj = 10 mF6RR 666580 dBThermal Shutdown (Note 5) 180 CLong Term Stability, TJ = Thigh (Note 6)TA= 25 C for End point Measurements5S Tlow to Thigh = 0 to +125 C for LM317 MTlow to Thigh = 40 to +125 C for LM317MB, Load and line regulation are specified at constant junction temperature.

5 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 , NCV317MA, CHARACTERISTICS (VI VO = V; IO = A, TJ = Tlow to Thigh (Note 7), unless otherwise noted.)CharacteristicsFigureSymbolLM317M A/LM317 MAB/NCV317 MABUnitMinTypMaxLine Regulation (Note 8) (TA = 25 C, V VI VO 40 V)3 Regline Regulation (Note 8)TA = 25 C, 10 mA IO AVO VVO V4 Regload VOAdjustment Pin Current5 IAdj 50100mAAdjustment Pin Current V VI VO 40 V, 10 mA IL A, PD Pmax3, 4 DIAdj Voltage V VI VO 40 V, 10 mA IL A, PD Regulation (Note 8) V VI VO 40 V3 Regline Regulation (Note 8)10 mA IO AVO VVO V4 Regload VOTemperature Stability (Tlow TJ Thigh)5TS % VOMinimum Load Current to Maintain Regulation (VI VO = 40 V)

6 5 ILmin Output CurrentVI VO 15 V, PD PmaxVI VO = 40 V, PD Pmax, TA = 25 ARMS Noise, % of VO (TA = 25 C, 10 Hz f 10 kHz) N % VORipple Rejection, VO = 10 V, f = 120 Hz (Note 9)Without CAdjCAdj = 10 mF6RR 666580 dBThermal Shutdown (Note 10) 180 CLong Term Stability, TJ = Thigh (Note 11)TA= 25 C for End point Measurements5S Tlow to Thigh = 0 to +125 C for LM317 MATlow to Thigh = 40 to +125 C for LM317 MAB, Load and line regulation are specified at constant junction temperature. 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 , NCV317MA, 2.

7 Representative Schematic * Pulse Testing Required: 1% Duty Cycle is Regulation (%/V) =VOH - VOLx 100*VCCVIHVILVinVoutVOHVOLRL+ 3. Line Regulation and DIAdj/Line Test CircuitVOLLM317M, NCV317MA, * Pulse Testing Required: 1% Duty Cycle is Regulation (mV) = VO (min Load) -VO (max Load)Load Regulation (% VO) =VO (min Load) - VO (max Load)X 100VO (min Load)VO (max Load) +*RL(max Load)RL(min Load)VoutR12401%VinVinIAdjILFigure 4. 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 = 5. Standard Test CircuitLM317 MVinVoutVout = 10 *1N4002CO+ + * D1 Discharges CAdj if Output is Shorted to Ground.

8 **CAdj provides an AC ground to the adjust = 120 HzVO**Figure 6. Ripple Rejection Test CircuitLM317M, NCV317MA, , OUTPUT CURRENT (A)IB, QUIESCENT CURRENT (mA)Vin-Vout, INPUT-OUTPUT VOLTAGEDIFFERENTIAL (V)Figure 7. Load RegulationFigure 8. Ripple RejectionFigure 9. Current LimitFigure 10. Dropout VoltageFigure 11. Minimum Operating CurrentFigure 12. Ripple Rejection versus 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 = 100 mAf = 120 HzVout = 10 VVin = 14 V to 24 V-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C) = 500 1020304050 Vin-Vout, INPUT-OUTPUT Voltage DIFFERENTIAL (V)TJ = 25 CTJ = 125 10 203040 Vin-Vout, INPUT-OUTPUT Voltage DIFFERENTIAL (Vdc) k10 k100 Mf, FREQUENCY (Hz)RR, RIPPLE REJECTION (dB)IL = 40 mAVin = V VPPVout = V90 Without CAdj = 10 mFWithout CAdjIL = 100 mATJ = 25 CTJ = 125 CLM317M, NCV317MA, , OUTPUT Voltage DEVIATION (V)

9 Vout, OUTPUT Voltage DEVIATION (V)Vin, INPUT Voltage CHANGE (V)Vout, OUTPUT Voltage CHANGE (%) IAdj, ADJUSTMENT PIN CURRENT ( A) refV, REFERENCE Voltage (V)CL = mF; CAdj = 10 mFFigure 13. Temperature StabilityFigure 14. Adjustment Pin CurrentFigure 15. Line RegulationFigure 16. Output NoiseFigure 17. Line Transient Response0 10203040t, TIME (ms)CL = mFCL = 0 VinVout = 10 VIL = 50 mATJ = 25 C0 10203040t, TIME (ms)ICURRENT (A)L, LOADCL = mF; CAdj = 10 mFVin = 15 V Vout = 10 VINL = 50 mATJ = 25 CIL-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C)Vin = VVout = VrefIL = mA-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C)Vin = VVout = Vref IL = 10 mA IL = 100 mA-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C)Vin = V to VVout = VrefIL = mA-50-250255075100125150TJ, JUNCTION TEMPERATURE ( C)Bandwidth 100 Hz to 10 kHzFigure 18.

10 Load Transient Voltage ( V) LM317M, NCV317MA, INFORMATIONB asic Circuit OperationThe LM317M is a three terminal floating Regulator . Inoperation, the LM317M 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 19), and thisconstant current flows through R2 to ground. The regulatedoutput Voltage is given by:Vout+Vref 1)R2R1 )IAdjR2 Since the current from the terminal (IAdj) represents anerror term in the equation, the LM317M was designed tocontrol IAdj to less than 100 mA and keep it constant. To dothis, all quiescent operating current is returned to the outputterminal.