XL4501 Buck Converter

XL4501 DC to DC Converter SMD IC

The XL4501 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 4.5 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 in to minimize external component count.

• Wide 8 Volt to 36 Volt Input Voltage Range

• Output Adjustable from 1.25 Volts to 32 Volts

• Minimum Drop Out 0.3 Volts

• Fixed 150KHz Switching Frequency

• Maximum 5 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

• Available in TO263-5L package

• Car Charger

• Battery Charger

• LCD Monitor and LCD TV

• Portable instrument power supply

• Telecom / Networking Equipment

• Buck constant current driver

• Monitor LED Backlighting

• n General purpose LED lighting

• XL4501 Datasheet