DATA SHEET www.onsemi.com Voltage Regulator 2 D PAK3 D2T SUFFIX Adjustable Output, Positive CASE 936 2 1 3 1.5 A Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. LM317, NCV317 The LM317 is an adjustable 3terminal positive voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it TO220 employs internal current limiting, thermal shutdown and safe area T SUFFIX compensation, making it essentially blowout proof. CASE 221AB The LM317 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable 1 Pin 1. Adjust 2 output regulator, or by connecting a fixed resistor between the 3 2. V out adjustment and output, the LM317 can be used as a precision current 3. V in regulator. Heatsink surface connected to Pin 2. Features Output Current in Excess of 1.5 A ORDERING INFORMATION Output Adjustable between 1.2 V and 37 V See detailed ordering and shipping information in the package Internal Thermal Overload Protection dimensions section on page 10 of this data sheet. Internal Short Circuit Current Limiting Constant with Temperature Output Transistor SafeArea Compensation DEVICE MARKING INFORMATION Floating Operation for High Voltage Applications See general marking information in the device marking section on page 10 of this data sheet. Eliminates Stocking many Fixed Voltages 2 Available in Surface Mount D PAK3, and Standard 3Lead Transistor Package NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements AECQ100 Qualified and PPAP Capable These Devices are PbFree, Halogen Free/BFR Free and are RoHS Compliant V V in out LM317 R 1 I 240 Adj Adjust + C * C ** in O 0.1 F 1.0 F R 2 ** C is required if regulator is located an appreciable distance from power supply filter. in ** C is not needed for stability, however, it does improve transient response. O R 2 V 1.25 V 1 I R out 2 Adj R 1 Since I is controlled to less than 100 A, the error associated with this term is Adj negligible in most applications. Figure 1. Standard Application Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: August, 2021 Rev. 17 LM317/DLM317, NCV317 MAXIMUM RATINGS Rating Symbol Value Unit InputOutput Voltage Differential V V 0.3 to 40 Vdc I O Power Dissipation Case 221A T = +25C P Internally Limited W A D Thermal Resistance, JunctiontoAmbient 65 C/W JA Thermal Resistance, JunctiontoCase 5.0 C/W JC 2 Case 936 (D PAK3) T = +25C P Internally Limited W A D Thermal Resistance, JunctiontoAmbient 70 C/W JA Thermal Resistance, JunctiontoCase 5.0 C/W JC Operating Junction Temperature Range T 55 to +150 C J Storage Temperature Range T 65 to +150 C stg Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. ELECTRICAL CHARACTERISTICS (V V = 5.0 V I = 0.5 A for D2T and T packages T = T to T (Note 1) I and P (Note 2) unless otherwise noted.) I O O J low high max max Characteristics Figure Symbol Min Typ Max Unit Line Regulation (Note 3), T = +25C, 3.0 V V V 40 V 1 Reg 0.01 0.04 %/V A I O line Load Regulation (Note 3), T = +25C, 10 mA I I 2 Reg A O max load V 5.0 V 5.0 25 mV O V 5.0 V 0.1 0.5 % V O O Thermal Regulation, T = +25C (Note 4), 20 ms Pulse Reg 0.03 0.07 % V /W A therm O Adjustment Pin Current 3 I 50 100 A Adj Adjustment Pin Current Change, 2.5 V V V 40 V, 1, 2 I 0.2 5.0 A I O Adj 10 mA I I , P P L max D max Reference Voltage, 3.0 V V V 40 V, 10 mA I I , P P 3 V 1.2 1.25 1.3 V I O O max D max ref Line Regulation (Note 3), 3.0 V V V 40 V 1 Reg 0.02 0.07 %/V I O line Load Regulation (Note 3), 10 mA I I 2 Reg O max load V 5.0 V 20 70 mV O V 5.0 V 0.3 1.5 % V O O Temperature Stability (T T T ) 3 T 0.7 % V low J high S O Minimum Load Current to Maintain Regulation (V V = 40 V) 3 I 3.5 10 mA I O Lmin Maximum Output Current 3 I A max V V 15 V, P P T Package 1.5 2.2 I O D max, V V = 40 V, P P , T = +25C, T Package 0.15 0.4 I O D max A RMS Noise, % of V , T = +25C, 10 Hz f 10 kHz N 0.003 % V O A O Ripple Rejection, V = 10 V, f = 120 Hz (Note 5) 4 RR dB O Without C 65 Adj C = 10 F 66 80 Adj Thermal Shutdown (Note 6) 180 C LongTerm Stability, T = T (Note 7), T = +25C for 3 S 0.3 1.0 %/1.0 J high A Endpoint Measurements kHrs. Thermal Resistance JunctiontoCase, T Package R 5.0 C/W JC 1. T to T = 0 to +125C, for LM317T, D2T. T to T = 40 to +125C, for LM317BT, BD2T, T to T = 55 to +150C, for low high low high low high NCV317BT, BD2T. 2. I = 1.5 A, P = 20 W max max 3. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account O separately. Pulse testing with low duty cycle is used. 4. Power dissipation within an IC voltage regulator produces a temperature gradient on the die, affecting individual IC components on the die. These effects can be minimized by proper integrated circuit design and layout techniques. Thermal Regulation is the effect of these temperature gradients on the output voltage and is expressed in percentage of output change per watt of power change in a specified time. 5. C , when used, is connected between the adjustment pin and ground. Adj 6. Thermal characteristics are not subject to production test. 7. Since LongTerm Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot. www.onsemi.com 2