LM317 Datasheet PDF – 1A, Voltage Regulator – CDIL

Part Number: LM317


Package: TO-220 Type

Manufacturer: Continental Device India Limited

Image and Pinouts:

LM317 datasheet



This is 1A, Positive Adjustable Voltage Regulator. LM317 is a three-terminal positive voltage regulator integrated circuit (IC) that is commonly used in electronic circuits to provide a variable output voltage. It is a linear regulator, which means that it regulates the voltage by dissipating excess voltage as heat. The LM317 has a voltage range of 1.2V to 37V and a maximum output current of 1.5A. It is often used in power supply circuits, battery chargers, and other circuits where a stable and adjustable voltage is required.


The voltages available allow these Regulators to be used in Logic Systems, Instrumentation, Hi-Fi Audio Circuits and other Solid State Electronic Equipment


Internal Short Circuit Protection and Internal Over Temperature Protection

Components with similar functions to LM317

1. The LM1117 is a low dropout voltage regulator IC that has a voltage range of 1.25V to 13.8V and a maximum output current of 1A. It is similar to the LM317 in that it provides a variable output voltage, but it has a lower dropout voltage, which means it can regulate the voltage even when the input voltage is close to the output voltage. The LM1117 is often used in battery-powered applications where a stable output voltage is required even when the battery voltage is low.

2. Compared to the LM7805, the LM317 and LM1117 offer the advantage of providing an adjustable output voltage, while the LM7805 is fixed. Compared to the LM1117, the LM317 offers a wider voltage range and can handle higher output currents, but it has a higher dropout voltage. The choice of voltage regulator IC depends on the specific requirements of the application.

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LM317 Datasheet PDF Download

LM317 pdf

Other data sheets are available within the file: LM-317

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