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XL1507

XLSEMI
Part Number XL1507
Manufacturer XLSEMI
Description 3A 150KHz 30V Buck DC to DC Converter
Published Jun 29, 2014
Detailed Description 3A 150KHz 40V Buck DC to DC Converter Features n Wide 4.5V to 40V Input Voltage Range n 5V and adjustable versions n Out...
Datasheet PDF File XL1507 PDF File

XL1507
XL1507

Overview
3A 150KHz 40V Buck DC to DC Converter Features n Wide 4.
5V to 40V Input Voltage Range n 5V and adjustable versions n Output Adjustable from 1.
23V to 37V n Maximum Duty Cycle 100% n Minimum Drop Out 1.
5V n Fixed 150KHz Switching Frequency n 3A Constant Output Current Capability n Internal Optimize Power Transistor n High efficiency n Excellent line and load regulation n TTL shutdown capability n ON/OFF pin with hysteresis function n Built in thermal shutdown function n Built in current limit function n Built in second current limit function n Available in TO-252 package Applications n LCD Monitor and LCD TV n Digital Photo Frame n Set-up Box n ADSL Modem n Telecom / Networking Equipment Datasheet XL1507 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 is built inside.
When second current limit function 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) Rev 2.
0 www.
xlsemi.
com 1 3A 150KHz 40V Buck DC to DC Converter Pin Configurations (TO252-5L) Datasheet XL1507 Figure2.
Pin Configuration of XL1507 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5 Pin Name VIN OUTPUT GND FEEDBACK ON/OFF Description Supply Voltage Input Pin.
XL1507 operates from a 4.
5V to 40V DC voltage.
Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input.
Power Switch Output Pin (SW).
Output is the switch node that supplies power to the output.
Ground Pin.
Care must be taken ...


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