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LM317KCS on a board, in 3D

LM317KCS

Texas Instruments

0℃~+125℃@(Tj) 1 1.25V~37V 1.5A 10mA 40V 64dB@(120Hz) Adjustable Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCti/LM317KCS
Category
Voltage Regulators Linear, Low Drop Out (LDO) Regulators
Package
TO-220
Pins
4

Overview

The LM317KCS is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by Texas Instruments in a TO-220 package with 4 pins. 0℃~+125℃@(Tj) 1 1.25V~37V 1.5A 10mA 40V 64dB@(120Hz) Adjustable Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (Regulators:REG3+1 1ADJ-2OUT-3IN+4OUT, from CERN's library) and its footprint (ICs And Semiconductors THD:TO-220-H, from CERN's library), ready for a KiCad board. JLCPCB lists it (part C496105). 6 open-source boards in 6 repositories on GitHub use it.

Symbol

ADJIN3ADJ1OUT2OUT4
Regulators:REG3+1 1ADJ-2OUT-3IN+4OUTFrom CERN's library

Footprint

1234
ICs And Semiconductors THD:TO-220-HFrom CERN's library

From the datasheet

7
Junction, hottest
150 °C · operating virtual junction temperature, absolute max · p. 4
Gives
1.5 A · recommended continuous output current, max · p. 4
Feedback reference
1.25 V · VI − VO = 3–40 V, PD ≤ 20 W, IO = 10–1500 mA, typical · p. 5
Current limit
2.2 A · maximum output current, VI − VO ≤ 15 V, PD < PMAX, typical · p. 5
Junction to air (KCS)
23.5 K/W · junction-to-ambient thermal resistance, nominal · p. 4
Junction to board (KCS)
7.9 K/W · junction-to-board thermal resistance, nominal · p. 4
Junction to case (KCS)
15.9 K/W · junction-to-case (top) thermal resistance, nominal · p. 4

Parameters

16
Current Limit
2.2A
Features
Over Current Protection, Short Circuit Protection, Thermal shutdown
Junction Temperature(Max)
150℃
Number of Outputs
1
Operating Temperature
0℃~+125℃@(Tj)
Output Configuration
Positive
Output Current
1.5A
Output Type
Adjustable
Output Voltage
1.25V~37V
Power Supply Rejection Ratio (PSRR)
64dB@(120Hz)
Reference Voltage
1.25V
Thermal Resistance(Junction to Ambient)
23.5℃/W
Thermal Resistance(Junction to Board)
7.9℃/W
Thermal Resistance(Junction to Case)
15.9℃/W
Voltage - Supply
40V
standby current
10mA

Order codes

1

Pinout

4
The pins of the LM317KCS
PinNameType
1ADJPower in
2OUTPower in
3INInput
4OUTPower in

Open-source boards using it

All 6
  • 2 layers58.4 × 71.1 mmBreadboard psu, the printed circuit board in 3D

    Breadboard psu

    cegep-electronique-programmable/pcb_alimentation_prototypage

    Cette carte génére une tension de 3.3V ou 5V et se branche sur une plaquette de prototypage (breadboard).

    22 parts1
  • 2 layers140 × 100 mmDigidraw, the printed circuit board in 3D

    Digidraw

    cooper-campbell/senior_design_pcb_schematic

    152 parts
  • 2 layers49.5 × 43.2 mmShift light, the printed circuit board in 3D

    Shift light

    jdrusso/shift-light

    Miata shift light code

    14 parts
  • 2 layers83 × 30 mmWifi extender, the printed circuit board in 3D

    Wifi extender

    MikiyasFekadu/Wifi-extender

    I had a wifi range problem so I made an extender to fix it I have the wiring, code using Arduino IDE and the PCB in this repo

    11 parts
  • 2 layers82.5 × 127 mmPower supply, the printed circuit board in 3D

    Power supply

    nunosousa/SCART-switcher

    An old school SCART switcher. Its main purpose will be to automaticaly detect and switch the video output to the active input video source.

    59 parts

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A picture that opens the part, for a README
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Questions

Is there a KiCad symbol and footprint for the LM317KCS?

Yes. The symbol is Regulators:REG3+1 1ADJ-2OUT-3IN+4OUT and the footprint ICs And Semiconductors THD:TO-220-H, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM317KCS?

TO-220, with 4 pins. Its footprint is drawn on this page.

Where is the LM317KCS datasheet?

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

Where can I order the LM317KCS?

JLCPCB lists it as part C496105, with 0 in stock; the sellers' links on this page open their listings.

What can replace the LM317KCS?

Parts like it in the library: the LM7905CT by Texas Instruments, the LM317HVT by Texas Instruments, the LM317AT by Texas Instruments and the LM317AT by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM317KCS?

6 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8