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XL1507 fiches techniques PDF

XLSEMI - 3A 150KHz 30V Buck DC to DC Converter

Numéro de référence XL1507
Description 3A 150KHz 30V Buck DC to DC Converter
Fabricant XLSEMI 
Logo XLSEMI 





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XL1507 fiche technique
XLSEMI
3A 150KHz 30V Buck DC to DC Converter
Datasheet
XL1507
Features
„ Wide 4.75V to 30V Input Voltage Range
„ 3.3V,5V,12V, and adjustable versions
„ Output Adjustable from 1.23V to 28V
„ Maximum Duty Cycle 100%
„ Minimum Drop Out 1.5V
„ 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 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
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 50KHz. An internal compensation
block is built in to minimize external
component count.
Figure1. Package Type of XL1507 TO252-5L
2007 Rev 1.4
www.xlsemi.com
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