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Silan

SD42522 Datasheet Preview

SD42522 Datasheet

1A High Power LED Driver

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1A High Power LED Driver with 636V Input
DESCRIPTION
The SD42522 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.
The SD42522 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
* 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.
www.DataSheet4U.com
SD42522
SD42522TR
Package
SOP-8-225-1.27
SOP-8-225-1.27
Marking
SD42522
SD42522
Material
Pb free
Pb free
Package Type
Tube
Tape & Reel
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2009.07.06
Page 1 of 8




Silan

SD42522 Datasheet Preview

SD42522 Datasheet

1A High Power LED Driver

No Preview Available !

BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATING
Characteristics
Supply Voltage
Switch Voltage
www.DataSheet4U.com
Comp Voltage
SENSE voltage
Junction Temperature
Lead Temperature
Storage Temperature
Input Voltage
Operating Temperature
Symbol
VIN
VSW
VCOMP
VSENSE
Tj
TL
TSTG
VIN
TOPR
Ratings
40
-1~VIN+1
-0.3~6
-0.3~VIN
150
260
-65~150
6~40
-40~125
Unit
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
Oscillator Frequency
Symbol
VIN
IIN
IL
ILIM
Dmax
fosc
Test Condition
VCC=6/40V
VSW=36V
VIN=SENSE=12V
3LED, VIN=9V
Min.
6
1.6
--
250
Typ.
1.5
0
1.9
93
280
Max.
36
2.0
5
2.2
95
320
Unit
V
mA
μA
A
%
kHz
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2009.07.06
Page 2 of 8


Part Number SD42522
Description 1A High Power LED Driver
Maker Silan
Total Page 8 Pages
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