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XL2009

Xlsemi
Part Number XL2009
Manufacturer Xlsemi
Description 3A 180KHz 36V Buck DC to DC Converter
Published Sep 21, 2014
Detailed Description Datasheet 3A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Features n n n n XL2009 General Description The XL2009...
Datasheet PDF File XL2009 PDF File

XL2009
XL2009

Overview
Datasheet 3A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Features n n n n XL2009 General Description The XL2009 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2.
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 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.
Wide 8V to 36V Input Voltage Range Output Adjustable from 1.
25V to 32V Maximum Duty Cycle 100% Minimum Drop Out 0.
3V n n n n n Fixed 180KHz Switching Frequency Maximum 3A Switching Current Internal Optimize Power MOSFET High efficiency Excellent line and load regulation n n n n n With output constant current loop Built in thermal shutdown function Built in current limit function Built in output short protection function Available in SOP8L package Applications n n n n n Car Charger Battery Charger LCD Monitor and LCD TV Portable instrument power supply Telecom / Networking Equipment Figure1.
Package Type of XL2009 Rev 1.
1 1 www.
xlsemi.
com Datasheet 3A 180KHz 36V Buck DC to DC Converter With CV/CC Loop Pin Configurations XL2009 Figure2.
Pin Configuration of XL2009 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5,6 7,8 Pin Name FB OCSET VC VIN SW GND Description Feedback Pin (FB).
Through an external resistor divider network, FB senses the output voltage and regulates it.
The feedback threshold voltage is 1.
25V.
Output Constant Current Set Pin; Internal Voltage Regulator Bypass Capacity.
In typical system application, The VC pin connect a 1uf capacity to VIN.
Supply Voltage Input Pin.
XL2009 oper...


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