LM317HV circuit diagram based on 3A switching regulator

The circuit diagram below is a simple and inexpensive switching regulator capable of providing an adjustable voltage output range of 1.8V to 32V and a quiescent current of 3A. This voltage regulator uses LM317HV adjustable voltage stabilizing IC and 2N3792 power PNP transistor.

The LM317HV is an adjustable 3-terminal positive voltage regulator capable of delivering over 1.5A over an output range of 1.2V to 57V. This electronic component is very easy to use, requiring only two external resistors to set the output voltage. Additionally, both line and load regulation are superior to standard fixed regulators. Additionally, the LM317HV comes in a standard transistor package for easy installation and handling.

LM317HV features:

Adjustable output as low as 1.2V

Specified 1.5A output current

Line regulation is typically 0.01%/V

Load regulation is typically 0.1%

Current limit constant changes with temperature

100% electrical aging

No need to store many voltages

Standard 3-pin transistor package

80dB ripple suppression

Output short circuit protection

P+? Product Enhancement Testing

Circuit notes:

C1 and C4 must be solid tantalum capacitor types for best output quality.

L1: CORE-ARNOLDA.254168.260 transfer