Datasheet > SD42509

SD42509

更新时间： 2024-02-13 15:04:32

品牌	Logo	应用领域
士兰微 - SILAN		驱动器
页数	文件大小	规格书
7页	553K
描述
1A WHITE LED DRIVER

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数据手册

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SD42509 数据手册

SD42509

1A WHITE LED DRIVER

DESCRIPTION

The SD42509 is a step-down PWM control LED driver with a built-in

internal power MOSFET. It achieves 1A continuous output current over

a wide input supply range. It provides thermal shutdown circuit, current

limiting circuit.

SD42509 adopts current mode control. Current mode operation

provides fast transient response and simple loop stabilization design.

SD42509 has high efficiency up to more than 90%, and has excellent

constant current characteristic when the input/output voltage changed,

with the excellent current accuracy within ±1%.

FEATURES

* Maximum 1A output current

* 0.25Ω built-in power MOSFET

* 280kHz fixed frequency

ORDERING INFORMATION

* Excellent constant current accuracy ±1%

* High efficiency up to 90%

* Thermal shutdown

Device

Package

SD42509

SOP-8-225-1.27

* Cycle-by-cycle over current protection

* 6-20V input voltage range

* Drive LED string

APPLICATIONS

* Power LED driver

BLOCK DIAGRAM

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

Http://www.silan.com.cn

REV:1.4

2009.02.26

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