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Xlsemi

XL2003 Datasheet Preview

XL2003 Datasheet

3A 180KHz 30V Buck DC/DC Converter

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3A 180KHz 30V Buck DC/DC Converter With CV/CC Loop
Datasheet
XL2003
Features
n Wide 8V to 30V Input Voltage Range
n Output Adjustable from 0.8V to 26V
n Minimum Drop Out 0.3V
n Fixed 180KHz Switching Frequency
n Maximum 3A Output Current Capability
n Internal Optimize Power MOSFET
n Excellent line and load regulation
n High efficiency up to 92%
n TTL shutdown capability
n EN pin with hysteresis function
n With output constant current loop
n Built in Constant Voltage (CV) Loop
n Built in Constant Current (CC) Loop
n Built in thermal shutdown function
n Built in output short protection
n SOP8-EP package
General Description
The XL2003 is a 180 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. An internal compensation
block is built in to minimize external
component count.
Applications
n Car Charger
n Battery Charger
Figure1. Package Type of XL2003




Xlsemi

XL2003 Datasheet Preview

XL2003 Datasheet

3A 180KHz 30V Buck DC/DC Converter

No Preview Available !

3A 180KHz 30V Buck DC/DC Converter With CV/CC Loop
Pin Configurations
Datasheet
XL2003
NC 1
8 OCSET
VIN 2
7 EN
XL2003
SW 3
6 NC
GND 4
5 FB
The Exposed PAD is SW
Figure2. Pin Configuration of XL2003 (Top View)
Table 1 Pin Description
Pin Number
1,6
2
3
4
5
7
8
Pin Name
NC
VIN
SW
GND
FB
EN
OCSET
Description
No Connected.
Supply Voltage Input Pin. XL2003 operates from a 8V to 30V
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.
(Note: Connected the back exposed PAD to SW.)
Ground Pin.
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.
Output Constant Current Set Pin; (Iload=0.8mA*RCS)


Part Number XL2003
Description 3A 180KHz 30V Buck DC/DC Converter
Maker Xlsemi
Total Page 6 Pages
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