SIMPLE SWITCHER POWER CONVERTE
‚óŹ 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¬Ī4% tolerance on output voltage under specified input
voltage and output load conditions, and¬Ī15% on the oscillator frequency. External shutdown is
included, featuring typically 80¬ĶA standby current. Self-protection features include a two stage
frequency reducing current limit for the output switch and an over temperature shutdown for
complete protection under fault conditions.
3.3V, 5V, 12V, and adjustable output versions
Adjustable version output voltage range,1.2V to 32V
TO-220-5L and TO-263-5L 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 ¬ĶA
Thermal shutdown and current limit protection
Simple high-efficiency step-down (buck) regulator
On-card switching regulators
Positive to negative converter
Oct, 2006 V2.0
Chengdu Chip-Rail. Tech. Co., Ltd.