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SGM3139

所属分类:
LED驱动器
目标应用:
无线手机
MP3/MP4 and PMP
手机
便携式通信设备
数码相机
摄像机
掌上电脑
手持终端
电池供电设备
更多...

产品参数


描述

The SGM3139 is a 6-channel ultra low dropout constant source parallel LED driver. The SGM3139 uses an internal resistor to set the bias current for six LEDs, which are matched to ±3%. 
The SGM3139 incorporates a single wire interface to program the output current at 16 continuous steps. It has an internal deglitch circuit for filtering the noise of the EN input.
The SGM3139 requires only a 35mV dropout voltage at a 20mA load. The feature makes SGM3139 ideal for battery-operated systems, such as personal digital assistants.
The SGM3139 is available in Green TQFN-3×3-16L and TDFN-3×3-10L packages and is specified over an ambient temperature range of -40°C to +85°C.

特性

  • Ultra Low Dropout: 35mV/20mA
    Support up to 6 LEDs
    LED Sink Current 20mA
    ±3% LED Current Matching
    Deglitch Circuit
    Thermal Shutdown Protection
    16-Step Brightness Control
    No EMI and Switch Noise
    Operating Temperature Range: -40°C to +85°C
    Available in Green TQFN-3×3-16L and TDFN-3×3-10L Packages
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