Datasheet > SGM3127

SGM3127

更新时间： 2024-10-03 01:14:39

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
11页	1234K
描述
White LED Driver with Low Dropout Current Source

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SGM3127 数据手册

SGM3127

White LED Driver with

LowDropoutCurrentSource

GENERAL DESCRIPTION

FEATURES

The SGM3127 low-dropout bias supply for white LEDs

is a high-performance alternative to the simple ballast

resistors used in conventional white LED designs. It is

optimized for low power keypad and portable

backlighting applications.

● Support up to 4 LEDs

● Low 50mV Dropout at 30mA

● Less than ±5% LED Current Matching

● Simple LED Brightness Control

● Low Shutdown Current

● 2.5V to 5.5V Supply Voltage Range

● Thermal Shutdown Protection

● Operating Temperature Range: -40℃ to +85℃

The SGM3127 uses an internal resistor to set the bias

current for four LEDs, which are matched to ±5%. The

SGM3127's advantages over ballast resistors include

much lower bias variation with supply voltage variation,

significantly lower dropout voltage, and in some

applications, significantly improved efficiency.

● Available in Green SOT-23-6 Package

APPLICATIONS

Wireless Handsets

The SGM3127 requires only a 50mV dropout voltage at

a 30mA load on each output to match the LED

brightness.

MP3, MP4, and PMP

Cellular Phones

Portable Communication Devices

Digital Cameras, Camcorders

PDAs, Palmtops, and Handy Terminals

LED/Display Back Light Driver

LEDs for Camera Flash

The SGM3127 is available in Green SOT-23-6 package.

It operates over an ambient temperature range of -40℃

to +85℃.

Battery-Powered Equipment

REV. A. 3

SG Micro Corp

www.sg-micro.com

12 3 4 5 6 7...11

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