

LM317P
STMicroelectronics
0℃~+125℃@(Tj) 1 1.2V~37V 1.5A 40V 65dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive TO-220F Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
- Category
- Voltage Regulators Linear, Low Drop Out (LDO) Regulators
- Package
- TO-220F
- Pins
- 3
Overview
The LM317P is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a TO-220F package with 3 pins. 0℃~+125℃@(Tj) 1 1.2V~37V 1.5A 40V 65dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive TO-220F Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM317P, from EasyEDA) and its footprint (EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-T, from EasyEDA), ready for a KiCad board. 769 are in stock at JLCPCB (part C138772). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
9- Features
- Thermal shutdown
- Number of Outputs
- 1
- Operating Temperature
- 0℃~+125℃@(Tj)
- Output Configuration
- Positive
- Output Current
- 1.5A
- Output Type
- Adjustable
- Output Voltage
- 1.2V~37V
- Power Supply Rejection Ratio (PSRR)
- 65dB@(120Hz)
- Voltage - Supply
- 40V
Order codes
1- LM317PLCSC C138772
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | ADJ | Unspecified |
| 2 | OUT | Unspecified |
| 3 | INPUT | Unspecified |
Open-source boards using it
All 1- 2 layers90 × 70 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/st/LM317P" title="LM317P in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/LM317P.jpg" alt="LM317P" width="1200" height="900">[](https://pcbkit.io/parts/st/LM317P)Questions
Is there a KiCad symbol and footprint for the LM317P?
Yes. The symbol is EasyEDA_Cloud:LM317P and the footprint EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-T, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM317P?
TO-220F, with 3 pins. Its footprint is drawn on this page.
Where is the LM317P datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the LM317P?
JLCPCB lists it as part C138772, with 769 in stock; the sellers' links on this page open their listings.
What can replace the LM317P?
Parts like it in the library: the L7912ACV by STMicroelectronics, the CJ7905 by Jiangsu Changjing Electronics Technology (CJ), the L4940V5 by STMicroelectronics and the KIA7915PI-U/PF by KEC Semicon. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM317P?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8L7912ACV
TO-2200℃~+125℃@(Tj) 1 1.1V@(1A) 1.5A 12V 200uV 35V 3mA 60dB@(120Hz) Fixed Negative Over Temperature Protection、Short Circuit Protection TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsCJ7905
TO-2200℃~+125℃@(Tj) 1 1.1V@(1A) 1.5A 1.5mA 125uV 35V 5V 60dB@(120Hz) Fixed Negative TO-252-2L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSJiangsu Changjing Electronics Technology (CJ)Voltage Regulators - Linear, Low Drop Out (LDO) RegulatorsL4940V5
TO-220-40℃~+150℃@(Tj) 1 1.5A 17V 200mV@(500mA)、500mV@(1.5A) 5V 5mA 68dB@(120Hz) Fixed Positive Short Circuit Protection、Thermal Shutdown TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsKIA7915PI-U/PF
TO-220IS-30℃~+75℃@(Ta) 1 1.5A 15V 250uVrms 2V@(1A) 35V 3mA 60dB@(120Hz) Fixed Negative Over Current Protection、Over Temperature Protection、Short Circuit Protection TO-220IS Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSKEC SemiconVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsL7915ACV
TO-2200℃~+125℃@(Tj) 1 1.1V@(1A) 1.5A 15V 250uV 35V 3mA 60dB@(120Hz) Fixed Negative Short Circuit Protection、Thermal Shutdown TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsCJ7912
TO-2200℃~+125℃ 1 1.1V@(1A) 1.5A 12V 27V 2mA 60dB@(120Hz) Fixed Negative TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSJiangsu Changjing Electronics Technology (CJ)Voltage Regulators - Linear, Low Drop Out (LDO) RegulatorsL7812ACV-DG
TO-2200℃~+125℃@(Tj) 1 1.5A 10uV 12V 25V 2V@(1A) 60dB@(120Hz) 6mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM350T/NOPB
TO-2200℃~+125℃@(Tj) 1 1.2V~33V 35V 3A 86dB@(120Hz) Adjustable Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators