XL4501 DC to DC Converter

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. 

Features

• 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
  

Applications

• 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

Related LINKS

• XL4501 Datasheet