降压IC XL4005E1/XL4012E1/XL4006E1/XL4007E1/XL4008

5A 300KHz 32V Buck DC to DC Converter XL4005

Features
Wide 5V to 32V Input Voltage Range
Output Adjustable from 0.8V to 30V
Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
Fixed 300KHz Switching Frequency
5A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
TTL shutdown capability
EN pin with hysteresis function
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Available in TO-263 package
Applications
LCD Monitor and LCD TV
Di*al Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
General Description
    The XL4005 is a 300KHz fixed frequency PWM buck (step-down) DC/DC converter,
capable of driving a 5A 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. When short protection function happens, the operation frequency will be reduced from 300KHz to 60KHz. An internal compensation block is built in to minimize external component count.