Skip to the content
PCBKitNew board
LM317G, in 3D

LM317G

UMW

-40℃~+125℃@(Tj) 0.003%Vout 1 1.2V~37V 2.2A 40V 46uA 66dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection、Thermal Shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCumw/LM317G
Category
Voltage Regulators Linear, Low Drop Out (LDO) Regulators
Package
SOT-223
Pins
4

Overview

The LM317G is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by UMW in a SOT-223 package with 4 pins. -40℃~+125℃@(Tj) 0.003%Vout 1 1.2V~37V 2.2A 40V 46uA 66dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection、Thermal Shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM317_C7543014, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-223, from KiCad's library), ready for a KiCad board. 68,117 are in stock at JLCPCB (part C347367). 1 open-source board in 1 repository on GitHub use it.

Symbol

ADJ1OUTPUT2INPUT3OUTPUT4
EasyEDA_Cloud:LM317_C7543014From EasyEDA

Footprint

1234
Package_TO_SOT_SMD:SOT-223From KiCad's library

From the datasheet

3
Junction, hottest
125 °C · junction temperature, absolute maximum · p. 2
Gives
1.5 A · rated load current, max, subject to power dissipation · p. 3
Feedback reference
1.25 V · feedback reference voltage, typical · p. 3

Parameters

13
Features
Over Current Protection
Junction Temperature(Max)
125℃
Noise
0.003%Vout
Number of Outputs
1
Operating Temperature
-40℃~+125℃@(Tj)
Output Configuration
Positive
Output Current
1.5A
Output Type
Adjustable
Output Voltage
1.2V~37V
Power Supply Rejection Ratio (PSRR)
66dB@(120Hz)
Reference Voltage
1.25V
Voltage - Supply
40V
standby current
46uA

Order codes

1

Pinout

4
The pins of the LM317G
PinNameType
1ADJUnspecified
2OUTPUTUnspecified
3INPUTUnspecified
4OUTPUTUnspecified

Open-source boards using it

All 1
  • 2 layers100 × 100 mmPcb moduloDidaticoSCADA, the printed circuit board in 3D

    Pcb moduloDidaticoSCADA

    wvianna/pcb-moduloDidatico-SCADA-IoT

    Projeto de uma PCB para utilização de protocolos: Modbus RTU, Modbus TCP, MQTT, OPC UA pub/sub. Finalidade didática. O firmware também está implementado.

    98 parts1

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/umw/LM317G" title="LM317G in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/umw/LM317G.jpg" alt="LM317G" width="1200" height="900">
A picture that opens the part, for a README
[![LM317G](https://pcbkit.io/embed/parts/umw/LM317G.jpg?size=s)](https://pcbkit.io/parts/umw/LM317G)

Questions

Is there a KiCad symbol and footprint for the LM317G?

Yes. The symbol is EasyEDA_Cloud:LM317_C7543014 and the footprint Package_TO_SOT_SMD:SOT-223, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM317G?

SOT-223, with 4 pins. Its footprint is drawn on this page.

Where is the LM317G datasheet?

UMW publishes it: the Datasheet link on this page opens it.

Where can I order the LM317G?

JLCPCB lists it as part C347367, with 68,117 in stock; the sellers' links on this page open their listings.

What can replace the LM317G?

Parts like it in the library: the LM317DCYR by UMW, the LM317 by TDSEMIC, the TL1963A-33DCY by Texas Instruments and the BL8071GCLATR33 by BL. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM317G?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8