● Features

※ 3.3V, 5V, 12V, and adjustable

output versions

※ Adjustable version output

voltage range,1.2V to 37V

※ TO-220 and TO-263 packages

※ Output load current 3A

※ Input voltage range up to 40V

※ Requires only 4 external components

※ 150 kHz fixed frequency internal

oscillator

※ TTL shutdown capability

※ Low power standby mode,

IQ typically 80 µA

※ High efficiency

※ Thermal shutdown and current

limit protection

● Application

※ Simple high-efficiency step-down

(buck) regulator

※ On-card switching regulators

※ Positive to negative converter

● General Description

The AE2596 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 AE2596 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.

Other features include a guaranteed±4 tolerance

on output voltage under specified input voltage and

output load conditions, and±15 on the oscillator

frequency. External shutdown is included, featuring

typically 80 µA standby current. Selfprotection features

include a two stage frequency reducing current limit for

the output switch and an over temperature shutdown for

complete protection under fault conditions.