LM317 Adjustable Voltage Regulator IC (SOT 223, 1.25V to 37V)

The LM317 is an adjustable positive linear voltage regulator designed to provide a regulated DC output voltage from an unregulated input supply. It supports an adjustable output range of approximately 1.25V to 37V, depending on the input voltage and operating conditions. The regulator uses external resistors to set the output voltage and includes internal current limiting and thermal protection. The SOT 223 package is suitable for compact surface mount power supply circuits.

Key Features -

• Adjustable positive output voltage

• Output voltage range of approximately 1.25V to 37V, subject to device ratings

• Designed for current regulation and voltage regulation applications

• Internal current limiting protection

• Thermal overload protection

• Short circuit protection, depending on the specific manufacturer variant

• External resistors used to set the output voltage

• Compact SOT 223 surface mount package

Specifications -

• Component Type: Adjustable positive linear voltage regulator

• Model: LM317

• Package Type: SOT 223

• Output Voltage Range: Approximately 1.25V to 37V

• Output Current: Up to 1.5A for applicable LM317 variants under suitable operating conditions

• Regulator Type: Positive adjustable linear regulator

• Output Adjustment: External resistor network

• Protection: Current limiting and thermal protection

• Mounting Type: Surface mount

• Thermal Performance: Depends on input to output voltage difference, load current, PCB copper area, and cooling

• Input Voltage and Pinout: Verify the exact manufacturer's datasheet for the supplied SOT 223 variant

Applications -

• Adjustable DC power supplies

• Voltage regulation circuits

• Battery charging circuits when used in a suitable design

• Current limiting and constant current circuits

• Embedded electronics and prototyping

• Industrial control circuits

• Analog and general purpose power supply designs