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Datasheet
XL4001
2A 150kHz 40V Buck DC/DC Converter With Constant Current Loop
Features
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General Description
The XL4001 is a 150KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 2A 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. An internal compensation
block is built in to minimize external
component count.
Wide 4.5V to 40V Input Voltage Range
Output Adjustable from 1.235V to 37V
Minimum Drop Out 1.5V
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Fixed 150kHz Switching Frequency
2A Constant Output Current Capability
Internal Optimize Power Transistor
Excellent line and load regulation
TTL shutdown capability
ON/OFF pin with hysteresis function
With output constant current loop
Built in thermal shutdown function
Built in current limit function
Built in output over voltage protection
SOP8-EP (Exposed PAD) package
Applications
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Car Charger
Battery Charger
LED Constant Current Driver
Figure1. Package Type of XL4001
Rev 1.2
1
ETC [ ETC ]
