2 layers128 × 80 mm
LM317AT
Texas Instruments
-40℃~+125℃ 0.003%Vout 1 1.25V~37V 1.5A 40V 80dB@(120Hz) Adjustable Over Current Protection、Short Circuit Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
Extended
- Category
- Voltage Regulators Linear, Low Drop Out (LDO) Regulators
- Package
- TO-220
- Pins
- 4
Overview
The LM317AT is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by Texas Instruments in a TO-220 package with 4 pins. -40℃~+125℃ 0.003%Vout 1 1.25V~37V 1.5A 40V 80dB@(120Hz) Adjustable Over Current Protection、Short Circuit Protection 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. 393 are in stock at JLCPCB (part C94659). 14 open-source boards in 13 repositories on GitHub use it.
Symbol
Footprint
Parameters
13- Features
- Thermal shutdown
- Maximum Input Voltage
- 40V
- Noise
- 0.003%Vout
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+125℃
- Output Configuration
- Positive
- Output Current
- 1.5A
- Output Polarity
- Positive electrode
- Output Type
- Adjustable
- Output Voltage
- 1.25V~37V
- Power Supply Rejection Ratio (PSRR)
- 80dB@(120Hz)
- Voltage - Supply
- 40V
- standby current
- 10mA
Order codes
2- LM317ATLCSC C21744
- LM317AT/NOPBLCSC C94659
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | ADJ | Power in |
| 2 | OUT | Power in |
| 3 | IN | Input |
| 4 | OUT | Power in |
Open-source boards using it
All 14- 2 layers224.2 × 153.7 mm
- 2 layers84 × 69.5 mm
Ref fixa v02
agaelema/Precision-Voltage-Reference
A simple and efficient instrumentation project of a Precision Voltage Reference. The idea of this project appeared with my passion by the instrumentation and my need of some reference to calibrate my projects involving…
69 parts7MIT - 2 layers61.8 × 60 mm
Levitador
jcsombria/OpenHardwareLabs
Open source and open hardware virtual and remote laboratories
20 parts1 - 2 layers80 × 50 mm
Blitzortung AS3935
patkan/lightning-detector
Lightning Detector ethernet sensor node and server based on AS3935 - this project is discontinued
81 parts1GPL-2.0 - 2 layers100 × 50 mm
Ad8307-log amp
benishor/w7zoi-sa-ad8307-log-amp
Kicad files for the new AD8307 log amp for W7ZOI spectrum analyzer.
52 partsMIT - 2 layers40.6 × 34.3 mm
LightFlicker
coolhatguy/LightFlicker
Project utilizing Kicad and PCB creation. Written in the Arduino IDE
10 partsApache-2.0 - 2 layers79.4 × 91.6 mm
Loconet
dirkjankrijnders/lnet-iface-hub
Modular hub/frontpanel/microcontroller interface PCB's
38 parts
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/ti/LM317AT" title="LM317AT in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/LM317AT.jpg" alt="LM317AT" width="1200" height="900">[](https://pcbkit.io/parts/ti/LM317AT)Questions
Is there a KiCad symbol and footprint for the LM317AT?
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 LM317AT?
TO-220, with 4 pins. Its footprint is drawn on this page.
Where is the LM317AT datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM317AT?
JLCPCB lists it as part C94659, with 393 in stock; the sellers' links on this page open their listings.
What can replace the LM317AT?
Parts like it in the library: the LM7905CT by Texas Instruments, the LM317HVT by Texas Instruments, the LM317AT by HGSEMI and the LM7912CT by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM317AT?
14 boards in 13 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
LM7905CT
TO-2200.5uVrms 0℃~+125℃@(Tj) 1 1.1V@(1A) 1.5A 1mA 25V 54dB@(120Hz) 5V Fixed Negative Over Current Protection、Short Circuit Protection、Thermal shutdown TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM317HVT
TO-2200℃~+125℃@(Tj) 1 1.25V~57V 1.5A 60V 80dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM317AT
TO-220-3-40℃~+85℃@(Ta) 0.003%Vout 1 1.2V~37V 1.5A 40V 80dB@(12Hz) Adjustable Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM7912CT
TO-220-30℃~+125℃ 1 1.5A 12V 35V 7.8mA Fixed Negative Short Circuit Protection、Thermal shutdown TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM7915CT
TO-220-30℃~+125℃ 1 1.5A 15V 35V 7.8mA Fixed Negative Short Circuit Protection、Thermal shutdown TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM2990T-12
TO-220-40℃~+125℃@(Tj) 1 1.8A 12V 26V 500uVrms 52dB 600mV@(1A) 9mA Fixed Negative Over Current Protection、Over Temperature Protection、Short Circuit Protection TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM7905CT
TO-220-3-20℃~+125℃ 1 1.5A 1.5V@(1A) 100uV 20V 4mA 5V 60dB@(120Hz) Fixed Negative Over Current Protection、Short Circuit Protection、Thermal shutdown TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsLM7915CT
TO-2200℃~+125℃@(Tj) 1 1.1V@(1A) 1.5A 1.5mA 15V 23V 375uV 54dB@(120Hz) Fixed Negative Over Current Protection、Over Temperature Protection、Short Circuit Protection TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators