3A 150KHz 40V Buck DC to DC Converter XL1507
Features
Wide 4.75V 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 1.5V
Fixed 150KHz Switching Frequency 3A Constant Output Current Capability Internal Optimize Power Transistor Up to 90% Efficiency
全部视频列播放表本站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管串
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 ）
热敏打印头3A 150KHz 40V Buck DC to DC Converter XL1507
3A 150KHz 40V Buck DC to DC Converter XL1507 Function Block
保鲜膜切割盒
Figure3. Function Block Diagram of XL1507
Typical Application Circuit
Fig4. XL1507 Typical Application Circuit 12V-5V/3A
3A 150KHz 40V Buck DC to DC Converter XL1507
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3A 150KHz 40V Buck DC to DC Converter XL1507
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