Datasheet > SGM3131_16

SGM3131_16

更新时间： 2024-10-03 01:20:31

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
13页	2246K
描述
120mA 4-Channel Charge Pump White LED Driver with Low Dropout Current Source

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SGM3131_16 数据手册

SGM3131

120mA 4-Channel Charge Pump White LED

Driver with Low Dropout Current Source

GENERAL DESCRIPTION

FEATURES

The SGM3131 is a high performance white LED driver.

It integrates current sources and automatic mode

selection charge pump. The part maintains the high

efficiency by utilizing a 1×/1.5× fractional charge pump

and low dropout current sources. The small equivalent

1× mode open loop resistance and ultra-low dropout

voltage of current source extend the operating time of

1× mode and optimize the efficiency of Li-Ion battery in

white LED applications.

● Input Voltage Range: 2.7V to 5.5V

● Drives up to 4 LEDs at 30mA Each

● LED Brightness Control Through Single Wire

Interface

● 16-Step Brightness Control

● High Efficiency by Fractional Conversion with 1×

and 1.5× Modes

● Switching Frequency: 1MHz

● Regulated Output Current with 1% Matching

● Internal Soft-Start Limits Inrush Current

● Low Input Ripple and Low EMI

The SGM3131 supports up to 4 white LEDs and

regulates a constant current which the initial value can

be set by an external resistor. The part implements a

4-bit DAC for brightness control. Users can easily

configure the LED current from 0.5mA to 30mA by a

serial pulse. The dimming of white LEDs current can be

achieved by applying a pulse signal to the EN pin.

There are totally 16 steps of current could be set by

users. The operating voltage range is 2.7V to 5.5V.

Internal soft start circuitry effectively reduces the

in-rush current while both start-up and mode transition.

The load is disconnected from VIN while shutdown and

the shutdown current is less than 1μA.

● Over-Current and Over-Temperature Protected

● Under-Voltage Lockout with Hysteresis

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

● Available in Green TQFN-3×3-16L Package

APPLICATIONS

Mobile Phone, DSC, MP3

White LED Backlighting

LCD Display Supply

SGM3131 is available in Green TQFN-3×3-16L

package. It operates over an ambient temperature

range of -40℃ to +85℃.

SG Micro Corp

JANUARY2013–REV.A. 2

www.sg-micro.com

12 3 4 5 6 7...13

中文翻译

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与SGM3131_16相关器件

型号	品牌	获取价格	描述	数据表
SGM3132	SGMICRO	获取价格	4-Channel 1-Wire Dimming LED Driver with Ultra-Low Dropout Current Source
SGM3132_16	SGMICRO	获取价格	4-Channel 1-Wire Dimming LED Driver with Ultra-Low Dropout Current Source
SGM31323	SGMICRO	获取价格	Constant Current RGB LED Driver with I2C Interface
SGM31324	SGMICRO	获取价格	Automatic Blink Mode, RGB LED Driver with I2C Interface
SGM3132YDE8G/TR	SGMICRO	获取价格	4-Channel 1-Wire Dimming LED Driver with Ultra-Low Dropout Current Source
SGM3132YMS8G/TR	SGMICRO	获取价格	4-Channel 1-Wire Dimming LED Driver with Ultra-Low Dropout Current Source
SGM3132YTQ16G/TR	SGMICRO	获取价格	4-Channel 1-Wire Dimming LED Driver with Ultra-Low Dropout Current Source
SGM3133	SGMICRO	获取价格	4-Channel Charge Pump White LED Driver with Low Dropout Current Source
SGM3133(EOL)	SGMICRO	获取价格	4-Channel Charge Pump White LED Driver with Low Dropout Current Source
SGM3133_16	SGMICRO	获取价格	4-Channel Charge Pump White LED Driver with Low Dropout Current Source

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