AMS2566 Datasheet, PDF (1/10 Pages) Advanced Monolithic Systems Ltd – Wide 3.6V to 25V Input Voltage Range

AMS2566
Features
General Description
„ Wide 3.6V to 25V Input Voltage Range
„ Output Adjustable from 0.8V to 24V
„ Maximum Duty Cycle 100%
„ Minimum Drop Out 0.6V
„ Fixed 360KHz Switching Frequency
„ 5A Constant Output Current Capability
„ Internal Optimize Power MOSFET
„ High efficiency up to 85~90%
„ Excellent line and load regulation
„ TTL shutdown capability
„ EN pin with hysteresis function
„ Built in thermal shutdown function
„ Built in current limit function
„ Built in output short protection function
„ Package in TO-263/TO252 and TO220
The AMS2566 is a 360 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 5A load with high
efficiency, low ripple and excellent line and
load regulation. Requiring a minimum
number of external components, the regulator
is simple to use and include internal
frequency compensation and a
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
is built inside. When short protection function
happens, the operation frequency will be
reduced from 360KHz to 70KHz. An internal
Applications
„ LCD Monitor and LCD TV
compensation block is built in to minimize
external component count.
„ TO220 can supply 5A continues
„ TO263 can supply 5A , TO252 can supply 4A
„ ADSL Modem
„ Telecom / Networking Equipment
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Advanced Monolithic Systems http://www.ams-semitech.com