LM317DCY

Texas InstrumentsExtended

0℃~+125℃@(Tj) 1 1.25V~37V 1.5A 40V 62dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Datasheet JLCPCB LCSC

Part id: ti/LM317DCY
Category: Voltage Regulators, Linear, Low Drop Out (LDO) Regulators
Package: SOT-223-4
Pins: 4
In stock: 1,520 at JLCPCB (C51466)
Used on: 2 open-source boards

Overview

The LM317DCY is a voltage Regulators, Linear, Low Drop Out (LDO) Regulator made by Texas Instruments in a SOT-223-4 package with 4 pins. 0℃~+125℃@(Tj) 1 1.25V~37V 1.5A 40V 62dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (dk_PMIC-Voltage-Regulators-Linear:LM317DCYR, from Digikey) and its footprint (Source_Footprints:SOT-223-4, from Digikey), ready for a KiCad board. 1,520 are in stock at JLCPCB (part C51466). 2 open-source boards in 2 repositories on GitHub use it.

Symbol

dk_PMIC-Voltage-Regulators-Linear:LM317DCYRFrom Digikey

Footprint

Source_Footprints:SOT-223-4From Digikey

Pinout

The pins of the LM317DCY
Pin	Name	Type
1	ADJ	Input
2	OUT	Power out
3	IN	Power in
4	OUT	Power out

Parameters

Features: Over Current Protection
Maximum Input Voltage: 40V
Number of Outputs: 1
Operating Temperature: 0℃~+125℃@(Tj)
Output Configuration: Positive
Output Current: 1.5A
Output Polarity: Positive
Output Type: Adjustable
Output Voltage: 1.25V~37V
Power Supply Rejection Ratio (PSRR): 62dB@(120Hz)
Voltage - Supply: 40V
Voltage Dropout: 3V@(1.5A)

Order codes

LM317DCYLCSC C2867399
LM317DCYRLCSC C51466

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Open-source boards using it

2 layers146 × 118.2 mm
Control board
MahmoudNasser9/Smartmeter

123 parts
2 layers77 × 28.5 mm
Circus broadcast
ashleyjr/Circus

49 parts

Parts like it

LM317DCYRG3
SOT-223-40℃~+125℃@(Tj) 1 1.25V~37V 1.5A 10mA 3V 40V 64dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators

Questions

Is there a KiCad symbol and footprint for the LM317DCY?

Yes. The symbol is dk_PMIC-Voltage-Regulators-Linear:LM317DCYR and the footprint Source_Footprints:SOT-223-4, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM317DCY?

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

Where is the LM317DCY datasheet?

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

Where can I order the LM317DCY?

JLCPCB lists it as part C51466, with 1,520 in stock; the sellers' links on this page open their listings.

What can replace the LM317DCY?

Parts like it in the library: the LM317DCYRG3 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM317DCY?

2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.