XL4201 DC-DC Buck IC

XL4201 DC to DC converter IC

The XL4201 is a 150KHz fixed frequency PWM buck (step-down) DC/DC Converter, capable of driving a 2.5 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 into minimize external component count. 

Features of XL4201 Step Down converter IC

• Wide 8 Volts to 40 Volts Input Voltage Range

• Output Adjustable from 1.25 Volts to 37 Volts

• Minimum Drop Out 0.3V

• Fixed 150KHz Switching Frequency

• Maximum 3 Ampere Switching Current

• Internal Optimize Power MOSFET

• Excellent line and load regulation

• With output constant current loop

• Built in thermal shutdown function

• Built in current limit function

• Built in input over voltage protection

• Recommend output power less than 13 Watts

• SOP8-EP (Exposed PAD) package

Applications of XL4201 IC

• Car Charger

• Battery Charger

• LCD Monitor and LCD TV

• Portable instrument power supply

• Telecom / Networking Equipment

• Buck constant current driver

• Monitor LED Back lighting

• General purpose LED lighting 

Related Links

• XL4201 Datasheet