LM2596S-5.0 Simple Switcher Power Converter 150 kHz 3A Step Down Voltage Regulator

LM2596 SIMPLE SWITCHER® Power Converter

150 kHz 3A Step-Down Voltage Regulator

Features

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

► Adjustable version output voltage range,

1.2V to 37V ±4% max over line and load conditions

► Available in TO-220 and TO-263 packages

► Guaranteed 3A output load current

► Input voltage range up to 40V

► Requires only 4 external components

► Excellent line and load regulation specifications

► 150 kHz fixed frequency internal oscillator

► TTL shutdown capability

►Low power standby mode, IQ typically 80 µA

► High efficiency n Uses readily available standard inductors ► Thermal shutdown and current limit protection

General Description

The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, and a fixed-frequency oscillator.

The LM2596 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 surface mount package.

Typical Application (Fixed Output Voltage Versions)

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