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          帕智電子(上海)有限公司

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          SGM3127

          White LED Driver with Low Dropout Current Source
           
          White LED Driver with Low Dropout Current Source
          GENERAL DESCRIPTION

          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.

          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.

          The SGM3127 requires only a 50mV dropout voltage at a 30mA load on each output to match the LED brightness.

          The SGM3127 is available in a Green SOT-23-6 package. It operates over an ambient temperature range of -40 to +85.

          PIN CONFIGURATIONS

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          FEATURES
          • 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

          • Available in a Green SOT-23-6 Package

          APPLICATIONS

          Wireless Handsets
          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
          Battery-Powered Equipment

          ORDERING INFORMATION
          Part NumberStatusPackagePinsPb-FreeTemp Range
          SGM3127YN6G/TRProductionSOT-23-66Y-40℃ to +85℃






           

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