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SGM31324

I2C Programmable RGB LED Driver with Auto Blink Mode
 
I2C Programmable RGB LED Driver with Auto Blink Mode
GENERAL DESCRIPTION

The SGM31324 is a fully programmable, constant current RGB LED driver with a flexible control interface. The device is ideally powered from 1-cell Lithium-Ion/ Polymer, 3-cell NiCd/NiMH/Alkaline batteries, or systems with 3.3V or 5V supplies. It provides 3 independent programmable constant current sinks without requiring any external components.
With an on-chip timing control unit, LED blink rate, fade-in and fade-out are user-adjustable resulting in unique color lighting patterns.
Ten internal registers are programmed via the I2C control interface with a built-in decoder allowing individual control of the LED channels’ ON/OFF state and current level. A total of 192 current levels are available for each channel from 0.125mA to 24mA with a 0.125mA step.
An Auto Blink mode automatically turns on and off LED1 (on D1 pin) at 8mA every 2s after EN pin goes high. In this mode, a phone with a discharged battery connected to a charger can have LED1 blink to notify that the battery is charging.
In shutdown mode, the quiescent current is reduced to less than 1μA.
The device is available in Green UTDFN-1.5×1.5-8L package. It operates over an ambient temperature range of -40 to +85.

PIN CONFIGURATIONS

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FEATURES
  • Ultra Low Dropout Regulated 3-CH Current Sinks

      30mV (TYP) at 10mA per Channel

  • Programmable LED Setting by I2C Compatible Interface

  • Individual Channel Control

      ON/OFF Interval Time Control

      Dimming Up/Down Time

      RGB LED Color Control

  • 192 Current-Level Setting

      0.125mA ~ 24mA, 0.125mA Step

  • Auto Blink LED1 (D1 Pin) Mode
      Blinking Period: 2s
      Current Setting: 8mA

  • No Noise, Non-Pulsating LED Current

  • Fast, Smooth Start-Up

  • Input Voltage Range: 2.5V to 5.5V

  • Less than 1μA Shutdown Current

  • -40 to +85 Operating Temperature Range

  • Available in Green UTDFN-1.5×1.5-8L Package

APPLICATIONS

RGB Indicator LEDs
Mobile Phones and Handheld Devices
Digital Cameras

ORDERING INFORMATION
Part NumberStatusPackagePinsPb-FreeTemp Range
SGM31324YUDW8G/TRProductionUTDFN-1.5×1.5-8L8Y-40℃ to +85℃






 

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