AMS2566
Features
Wide 3.6V to 25V Input Voltage Range
Output Adjustable from 0.8V to 24V
Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
General Description
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.
Fixed 360KHz Switching Frequency
5A
Constant Output Current Capability
Internal Optimize Power MOSFET
High e
fficiency
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
Applications
LCD Monitor and LCD TV
TO220 can supply 5A continues
TO263 can supply
5A
, TO252 can supply 4A
ADSL Modem
Telecom / Networking Equipment
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
compensation block is built in to minimize
external component count.
1
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS [ Advanced Monolithic Systems Ltd ]
