LM2594HVM-ADJ Description

The LM2594HVM-ADJ regulator is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. The LM2594HVM-ADJ is available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version, and is packaged in an 8-pin PDIP and an 8-pin surface-mount SOIC package. Requiring a minimum number of external components, these regulators are simple to use and feature internal frequency compensation, a fixed-frequency oscillator, and improved line and load regulation specifications.

LM2594HVM-ADJ Features

3.3-V, 5-V, 12-V, and adjustable output versions

Adjustable version output voltage range: 1.2 V to 37 V (57-V for the HV version), ±4% maximum overline and load conditions

Available in 8-pin surface-mount SOIC and 8-pin PDIP packages

Ensured 0.5-A output current

Input voltage range up to 60 V

Requires only four external components

150-kHz fixed-frequency internal oscillator

TTL shutdown capability

Low power standby mode, IQ typically 85 μA

High efficiency

Uses readily-available standard inductors

Thermal shutdown and current-limit protection

LM2594HVM-ADJ Applications

Simple high-efficiency step-down (buck) regulator

Efficient pre-regulator for linear regulators

On-card switching regulators

Positive-to-negative convertor