XL4001 DC to DC Converter

The XL4001 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2 Ampere 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.

Features of XL4001 DC to DC Converter IC

• 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

Applications of XL4001

• Car Charger

• Battery Charger

• LED Constant Current Driver