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XLSEMI

XL1513 Datasheet Preview

XL1513 Datasheet

2A 380KHz 18V Buck DC to DC Converter

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XLSEMI
2A 380KHz 18V Buck DC to DC Converter
Datasheet
XL1513
Features
„ Wide 3.6V to 18V Input Voltage Range
„ Output Adjustable from 0.8V to 16V
„ Maximum Duty Cycle 100%
„ Minimum Drop Out 0.6V
„ Fixed 380KHz Switching Frequency
„ 2A 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 SOP8 package
Applications
„ LCD Monitor and LCD TV
„ Digital Photo Frame
„ Set-up Box
„ ADSL Modem
„ Telecom / Networking Equipment
General Description
The XL1513 is a 380KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 2A 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 380KHz to 80KHz. An internal
compensation block is built in to minimize
external component count.
Rev 1.0
Figure1. Package Type of XL1513
1




XLSEMI

XL1513 Datasheet Preview

XL1513 Datasheet

2A 380KHz 18V Buck DC to DC Converter

No Preview Available !

XLSEMI
2A 380KHz 18V Buck DC to DC Converter
Pin Configurations
Datasheet
XL1513
FB 1
8 GND
EN 2
7 GND
XL1513
NC 3
6 SW
VIN 4
5 SW
Figure2. Pin Configuration of XL1513 (Top View)
Table 1 Pin Description
Pin Number
3
4
5,6
7,8
1
2
Pin Name
NC
VIN
SW
GND
FB
EN
Description
No Connected.
Supply Voltage Input Pin. XL1513 operates from a 3.6V to 18V
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 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 XL1513.
Feedback Pin (FB). Through an external resistor divider
network, Feedback senses the output voltage and regulates it.
The feedback threshold voltage is 0.8V.
Enable Pin. Drive EN pin low to turn off the device, drive it
high to turn it on. Floating is default high.
Rev 1.0
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
2


Part Number XL1513
Description 2A 380KHz 18V Buck DC to DC Converter
Maker XLSEMI
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