LED Driver. SD42524 Datasheet

SD42524 Driver. Datasheet pdf. Equivalent

Part SD42524
Description 1A High Power LED Driver
Feature www.DataSheet4U.com SD42524 1A High Power LED Driver with 6~36V Input DESCRIPTION The SD42524 is a.
Manufacture Silan
Datasheet
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SD42524
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SD42524
1A High Power LED Driver with 636V Input
DESCRIPTION
The SD42524 is a step-down PWM control LED driver with a built-in
power MOSFET. It achieves 1A continuous output current in 6~36V
input voltage range. It provides thermal shutdown circuit, current limit
circuit and PWM dimming circuit.
The SD42524 adopts current mode control which provides fast
transient response and simple loop stabilization design. It has high
efficiency up to more than 96%, and has excellent constant current
characteristic when the input/output voltage changed, with the
excellent current accuracy within ±1%
FEATURES
* 6-36V input voltage range
* Maximum 1A output current
* 0.40Ω built-in power MOSFET
* Integrate Jitter function
* Thermal compensation
* PWM dimming function
* 280kHz fixed frequency
* Excellent constant current accuracy ±1%
* High efficiency up to 96%
* Thermal shutdown
* Cycle-by-cycle over current protection
APPLICATIONS
* MR16 LED spotlight
* LED illuminance
* LED street lamp
ORDERING INFORMATION
Part No.
SD42524
Package
SOP-8-225-1.27
Marking
SD42524
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1 2009.06.26
Page 1 of 11



SD42524
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BLOCK DIAGRAM
SD42524
ABSOLUTE MAXIMUM RATING
Characteristics
Supply Voltage
Switch Voltage
PWM Voltage
Comp Voltage
SENSE voltage
Junction Temperature
Lead Temperature
Storage Temperature
Input Voltage
Operating Temperature
Symbol
VIN
VSW
VPWM
VCOMP
VSENSE
Tj
TL
TSTG
VIN
TOPR
Ratings
40
-1~VIN+1
-0.3~6
-0.3~6
-0.3~VIN
150
260
-65~150
6~40
-40~125
Unit
V
V
V
V
V
°C
°C
°C
V
°C
ELECTRICAL CHARACTERISTICSUnless otherwise specified, VIN=12VIOUT=700mA,Tamb=25°C
Characteristics
Supply Voltage
Operating Current
Upper Switch Leakage
Current Limit
Maximum Duty Cycle
Symbol
VIN
IIN
IL
ILIM
Dmax
Test Condition
VCC=6/40V, VPWM=5V
VSW=36V
VIN=SENSE=12V
3LED, VIN=9V
Min.
6
1.6
--
Typ.
1.5
0
1.9
93
Max.
36
2.0
5
2.2
95
Unit
V
mA
μA
A
%
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1 2009.06.26
Page 2 of 11







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