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SD42525 fiches techniques PDF

Silan Microelectronics - HIGH-EFFICIENCY HYSTERESIS LED DRIVER

Numéro de référence SD42525
Description HIGH-EFFICIENCY HYSTERESIS LED DRIVER
Fabricant Silan Microelectronics 
Logo Silan Microelectronics 





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SD42525 fiche technique
SD42525_Datasheet
32V/1A, HIGH-EFFICIENCY HYSTERESIS LED DRIVER WITH BUILT-IN
MOSFET
DESCRIPTION
SD42525 is a step-down constant current converter with
inductance current continuous-conduction mode, it is used for
driving LED or LEDs in series. The output current is adjustable
which is up to 1A in 6~32V input voltage range. LED whose
power is tens of watts can be driven by SD42525 with different
input voltages and peripheral elements. With built-in power
switch, average current of LED can be set through external
high-side current sensing. Analog dimming and wide range
PWM dimming are available through pin DIM and soft-start time
can be set by capacitor value which is connected between pin
DIM and ground.
It adopts two patent technologies: output current compensation
when input voltage varies and current limiting through
maximum duty factor when difference between input/output APPLICATIONS
voltages is small.
For SD42525, package of SOP-8-225, SOT-23-6L and SOT-
89-5L (no dimming) are available.
* Low-voltage LED spotlight, replacing
Halogen lamp
* Car-mounted LED lamp
FEATURES
* LED backup lamp
* LED signal lamp
* Few peripheral elements
* Built-in 36V power MOSFET
* Wide input voltage range: 6V~32V
* Maximum 1A output current
* Excellent output current accuracy: ±3%
* Multiplex pin DIM is used for chip switch, analog dimming
and PWM dimming.
* Soft start function
* LED open/short-circuit protection
* High efficiency up to 96%
* Output constant current which is adjustable
ORDERING INFORMATION
Part No.
SD42525
SD42525TR
SD42525ETR
SD42525KTR
Package
SOP-8-225-1.27
SOP-8-225-1.27
SOT-89-5L
SOT-23-6L
Marking
SD42525
SD42525
525E
525K
Material
Pb free
Pb free
Pb free
Pb free
Packing
Tube
Tape & Reel
Tape & Reel
Tape & Reel
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2010.12.13
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