● 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.