XL4001 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – 2A 150kHz 40V Buck DC/DC Converter With Constant Current Loop

2A 150kHz 40V Buck DC/DC Converter With Constant Current Loop
Datasheet
XL4001
Features
„ Wide 4.5V to 40V Input Voltage Range
„ Output Adjustable from 1.235V to 37V
„ Minimum Drop Out 1.5V
„ 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
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.
Applications
„ Car Charger
„ Battery Charger
„ LED Constant Current Driver
Figure1. Package Type of XL4001
Rev 1.2
www.xlsemi.com
1