Skip to the content
PCBKitNew board
LM317SX, in 3D

LM317SX

Texas Instruments

0℃~+125℃@(Ta) 1 1.25V~37V 1.5A 10mA 37V 80dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive TO-263-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCti/LM317SX
Category
Dropout Regulators(LDO)
Package
TO-263-3
Pins
4

Overview

The LM317SX is a dropout Regulator made by Texas Instruments in a TO-263-3 package with 4 pins. 0℃~+125℃@(Ta) 1 1.25V~37V 1.5A 10mA 37V 80dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive TO-263-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM317SX_NOPB, from EasyEDA) and its footprint (Package_TO_SOT_SMD:TO-263-3_TabPin4, from KiCad's library), ready for a KiCad board. 388 are in stock at JLCPCB (part C350547).

Symbol

ADJ1OUTPUT2INUT3OUTPUT4
EasyEDA_Cloud:LM317SX_NOPBFrom EasyEDA

Footprint

1234
Package_TO_SOT_SMD:TO-263-3_TabPin4From KiCad's library

Parameters

10
Features
Short Circuit Protection
Number of Outputs
1
Operating Temperature
0℃~+125℃@(Ta)
Output Configuration
Positive
Output Current
1.5A
Output Type
Adjustable
Output Voltage
1.25V~37V
Power Supply Rejection Ratio (PSRR)
80dB@(120Hz)
Voltage - Supply
37V
standby current
10mA

Order codes

2

Pinout

4
The pins of the LM317SX
PinNameType
1ADJUnspecified
2OUTPUTUnspecified
3INUTUnspecified
4OUTPUTUnspecified

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/ti/LM317SX" title="LM317SX 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/ti/LM317SX.jpg" alt="LM317SX" width="1200" height="900">
A picture that opens the part, for a README
[![LM317SX](https://pcbkit.io/embed/parts/ti/LM317SX.jpg?size=s)](https://pcbkit.io/parts/ti/LM317SX)

Questions

Is there a KiCad symbol and footprint for the LM317SX?

Yes. The symbol is EasyEDA_Cloud:LM317SX_NOPB and the footprint Package_TO_SOT_SMD:TO-263-3_TabPin4, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM317SX?

TO-263-3, with 4 pins. Its footprint is drawn on this page.

Where is the LM317SX datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LM317SX?

JLCPCB lists it as part C350547, with 388 in stock; the sellers' links on this page open their listings.