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8A 180KHz 40V Buck DC to DC Converter XL4016

Features

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Wide 8V to 40V Input Voltage Range Output Adjustable from 1.25V to 36V Maximum Duty Cycle 100% Minimum Drop Out 0.3V

Fixed 180KHz Switching Frequency 8A Constant Output Current Capability Internal Optimize Power MOSFET High efficiency up to 96%

Excellent line and load regulation Built in thermal shutdown function Built in current limit function

Built in output short protection function Built in input over voltage protection Available in TO220-5L package

General Description

The XL4016 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 8A 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 over current protection function is built inside. When short protection function happens, the operation frequency will be reduced from 180KHz to 48KHz. An internal compensation block is built in to minimize external component count.

Applications

n LCD Monitor and LCD TV

n Portable instrument power supply n Telecom / Networking Equipment

Figure1. Package Type of XL4016