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XL4005 Dataheets PDF



Part Number XL4005
Manufacturers XLSEMI
Logo XLSEMI
Description 5A 300KHz 32V Buck DC to DC Converter
Datasheet XL4005 DatasheetXL4005 Datasheet (PDF)

5A 300KHz 32V Buck DC to DC Converter Datasheet 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 outpu.

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5A 300KHz 32V Buck DC to DC Converter Datasheet 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  Digital 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. Rev 2.2 Figure1. Package Type of XL4005 www.xlsemi.com 1 5A 300KHz 32V Buck DC to DC Converter Pin Configurations Datasheet XL4005 Figure2. Pin Configuration of XL4005 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5 Pin Name GND FB SW EN VIN Description Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL4005. Feedback Pin (FB). Through an external resistor divider network, FB senses the output voltage and regulates it. The feedback threshold voltage is 0.8V. Power Switch Output Pin (SW). SW is the switch node that supplies power to the output. Enable Pin. Drive EN pin high to turn on the device, drive it low to turn it off. Supply Voltage Input Pin. XL4005 operates from a 5V to 32V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. Rev 2.2 www.xlsemi.com 2 5A 300KHz 32V Buck DC to DC Converter Function Block Datasheet XL4005 Figure3. Function Block Diagram of XL4005 Typical Application Circuit VIN CIN C1 220uF/50V 105 VIN 5 3 SW L1 33uH/5A XL4005 D1 MBRD1045G EN 4 1 2 FB GND C2 COUT 105 330uF/25V R2 16K CFF 33nF VOUT R1 3K INPUT 24V OUTPUT 5V/5A VOUT=0.8*(1+R2/R1) Figure4. XL4005 Typical Application Circuit (24V~5V/5A) Rev 2.2 www.xlsemi.com 3 5A 300KHz 32V Buck DC to DC Converter Datasheet XL4005 Ordering Information Order Information XL4005E1 Marking ID XL4005E1 Package Type Packing Type Supplied As TO263-5L 800 Units on Tape & Reel XLSEMI Pb-free products, as de.


ELJEA331KF XL4005 BA532


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