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Xlsemi

XL4015 Datasheet Preview

XL4015 Datasheet

5A 180KHz 36V Buck DC to DC Converter

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5A 180KHz 36V Buck DC to DC Converter
Datasheet
XL4015
Features
„ Wide 8V to 36V Input Voltage Range
„ Output Adjustable from 1.25V to 32V
„ Maximum Duty Cycle 100%
„ Minimum Drop Out 0.3V
„ Fixed 180KHz Switching Frequency
„ 5A Constant Output Current Capability
„ Internal Optimize Power MOSFET
„ High efficiency up to 96%
„ Excellent line and load regulation
„ Built in thermal shutdown function
„ Built in current limit function
„ Built in output short protection function
„ Available in TO263-5L package
Applications
„ LCD Monitor and LCD TV
„ Portable instrument power supply
„ Telecom / Networking Equipment
General Description
The XL4015 is a 180 KHz 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 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.
Rev 1.5
Figure1. Package Type of XL4015
www.xlsemi.com
1




Xlsemi

XL4015 Datasheet Preview

XL4015 Datasheet

5A 180KHz 36V Buck DC to DC Converter

No Preview Available !

5A 180KHz 36V Buck DC to DC Converter
Pin Configurations
Datasheet
XL4015
Figure2. Pin Configuration of XL4015 (Top View)
Table 1 Pin Description
Pin Number
1
2
3
4
5
Pin Name
GND
FB
SW
VC
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 XL4015.
Feedback Pin (FB). Through an external resistor divider
network, FB senses the output voltage and regulates it. The
feedback threshold voltage is 1.25V.
Power Switch Output Pin (SW). SW is the switch node that
supplies power to the output.
Internal Voltage Regulator Bypass Capacity. In typical system
application, The VC pin connect a 1uf capacity to VIN.
Supply Voltage Input Pin. XL4015 operates from a 8V to 36V
DC voltage. Bypass Vin to GND with a suitably large
capacitor to eliminate noise on the input.
Rev 1.5
www.xlsemi.com
2


Part Number XL4015
Description 5A 180KHz 36V Buck DC to DC Converter
Maker Xlsemi
Total Page 10 Pages
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