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PDF ( 数据手册 , 数据表 ) XL3001

零件编号 XL3001
描述 3A 220KHz 40V Buck LED Constant Current Driver
制造商 XLSEMI
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XL3001 数据手册, 描述, 功能
3A 220KHz 40V Buck LED Constant Current Driver
Datasheet
XL3001
Features
n Wide 8V to 40V Input Voltage Range
n Output Current Sence Voltage is 0.21V
n Maximum Duty Cycle 100%
n Minimum Drop Out 0.3V
n Fixed 220KHz Switching Frequency
n 3A Constant Output Current Capability
n Internal Optimize Power MOSFET
n High efficiency
n Excellent line and load regulation
n Built in thermal shutdown function
n Built in current limit function
n Built in output short protection function
n Available in SOP8-EP package
Applications
n Buck constant current driver
n Monitor LED Backlighting
n General purpose LED lighting
General Description
The XL3001 is a 220 KHz fixed frequency
PWM buck (step-down) LED constant current
driver, 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 over
current protection function is built inside.
When short protection function happens, the
operation frequency will be reduced from
220KHz to 60KHz. An internal compensation
block is built in to minimize external
component count.
Rev 1.2
Figure1. Package Type of XL3001
www.xlsemi.com
1







XL3001 pdf, 数据表
3A 220KHz 40V Buck LED Constant Current Driver
Typical System Application (VIN=8V~40V, IOUT=308mA)
Datasheet
XL3001
Figure12. XL3001 System Parameters Test Circuit (VIN=8V~40V, IOUT=308mA)
Rev 1.2
Efficiency VS LED String
100
95
90
85
80
75
70 VIN=8V,IOUT=308mA
65 VIN=12V,IOUT=308mA
VIN=24V,IOUT=308mA
60 VIN=36V,IOUT=308mA
55
50
45
40
1 2 3 4 5 6 7 8 9 10
LED String(N*1W)
Figure13. XL3001 System Efficiency Curve
8
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