STMicroelectronics

LM317K  

Linear & Switching Voltage Regulators

The LM317K is a versatile, adjustable voltage regulator integrated circuit (IC) manufactured by STMicroelectronics. It is part of the LM317 series, which includes the LM317, LM317HV, LM317IMP, and LM317K. The LM317K is designed to provide a stable and adjustable output voltage to power various electronic devices and circuits.

Description:

The LM317K is a three-terminal adjustable linear regulator that can provide an output voltage range from 1.25V to 37V. It is available in a TO-220 package, making it suitable for both through-hole and surface-mount applications. The device features a high input voltage range, typically from 3V to 40V, and can handle output currents up to 1.5A when used with an appropriate heat sink.

Features:

1. Adjustable output voltage: The LM317K can provide an output voltage range from 1.25V to 37V, making it suitable for a wide range of applications.
2. High input voltage range: The device can handle input voltages from 3V to 40V, making it suitable for various power supply requirements.
3. Output current capability: The LM317K can deliver up to 1.5A of output current when used with an appropriate heat sink.
4. Thermal protection: The device features internal thermal protection to prevent damage due to overheating.
5. Short-circuit protection: The LM317K has built-in short-circuit protection to safeguard the device and the connected load.
6. Low dropout voltage: The LM317K has a low dropout voltage, which means it can regulate the output voltage even when the input voltage is close to the desired output voltage.
7. Low quiescent current: The device has a low quiescent current, which helps to minimize power consumption when the output is not loaded.

Applications:

The LM317K is a versatile voltage regulator and can be used in a wide range of applications, including but not limited to:

1. Power supply regulation: The LM317K can be used to provide a stable and adjustable voltage output for various electronic devices and circuits.
2. Battery charging: It can be used in battery charging circuits to regulate the charging voltage and current.
3. LED dimming: The LM317K can be used in LED dimming applications to control the brightness of LEDs by adjusting the output voltage.
4. Motor speed control: It can be used in motor speed control circuits to regulate the voltage supplied to the motor.
5. Audio equipment: The LM317K can be used to provide a stable voltage supply for audio amplifiers and other audio equipment.
6. Robotics and automation: The device can be used in robotics and automation systems to power various electronic components and circuits.

In summary, the LM317K is a highly versatile and adjustable voltage regulator that can be used in a wide range of applications. Its features, such as a wide input voltage range, adjustable output voltage, and thermal protection, make it a reliable choice for various electronic devices and circuits.

LM317K Documents

Download datasheets and manufacturer documentation for LM317K

Datasheets :

LM117,217,317      

HTML Datasheet :

LM117,217,317