General Description
The XL1507 is a 150 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A 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 and a short circuit protection function are built inside. When OCP or SCP happens, the operation frequency will be reduced from 150KHz to 30KHz. An internal compensation block is built in to minimize external component count.

Features
 Wide 3.6 to 40V Input Voltage Range
 3.3V,5V,12V, and adjustable versions
 Output Adjustable from 1.23V to 38V
 Maximum Duty Cycle 100%
 Minimum Drop Out 1.3V
 Fixed 150KHz Switching Frequency
 3A Constant Output Current Capability
 Internal Optimize Power Transistor
 Up to 90% Efficiency
 Excellent line and load regulation
 TTL shutdown capability
 Built in Frequency Compensation
 Built in Soft Start Function
 Built in Thermal Shutdown Function
 Built in Current Limit Function
 Built in Short Protection Function
 Available in TO-252 package
Applications
 LCD Monitor and LCD TV
 Digital Photo Frame
 Set-up Box
 ADSL Modem
 Telecom / Networking Equipment

 

 

XL1507 - 40V 3A 150KHz Buck DC/DC Converter - Be pin-to-pin compatible with AP1507,PQ1CZ41