Shanghai Xinlong Semiconductor Co,.Ltd
www.xlsemi.com
Rev1.4 1
XL2005 DEMO Board manual
Introduction
Demonstration circuit XL2005 in a 160KHz BUCK converter circuit ,designed for 5V/1.5A output from a
8V to 32V input .
The XL2005 operates over an input range of 8V to 32V, suitable for car charger ,battery charger .Output
current up to 2A,efficiency up to 92%,with output constant voltage and constant current control
loop ,design with very low parts count.
This document contains the converter specification, schematic, PCB diagram, bill of materials.
Schematic
XL2005 VIN=8V~32V, VOUT=5V, IOUT=1.5A Typical Application Circuit
Pin Description
Pin Number
Pin Name
Description
1 FB
Feedback Pin (FB). Through an external resistor divider network,
Feedback senses the output voltage and regulates it. The feedback
threshold voltage is 0.8V.
2 EN
Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it
on.
3
OCSET
Output Constant Current Set Pin.
4 VIN
Supply Voltage Input Pin. XL2005 operates from a 8V to 32V DC
voltage. Bypass Vin to GND with a suitably large capacitor to eliminate
noise on the input.
5,6 SW
Power Switch Output Pin (SW). Output is the switch node that supplies
power to the output.
7,8 GND
Ground Pin.
