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AS1111 LED Driver IC

Low-Dropout LED Drivers

 
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The AS1111x family are high efficient LED drivers designed to match current source bias for any color LED, including white and blue. The devices can drive up to 4 high-current LEDs, the LED current can be adjusted using an external resistor (RSET) and dimmed with an external PWM signal via pin EN. It only requires 150mV headroom voltage to operate and when the devices are disabled, the supply current drops down to less than 1uA.

Key Features

  • Up to 4 channel 40mA driver
  • 150mV headroom to operate
  • Analog and PWM brightness control
  • No switching noise
  • Less external components needed

Key Benefits

  • High brightness LEDs
  • Excellent efficiency & battery lifetime
  • High resolution dimming possible
  • Suitable for EMF sensitive envireonment
  • Small PCB area

Product Facts

Outputs [#] 2 - 4
LED current per output [mA] 40 - 80
Features Simple Drive
Error detection
Read-back
LED-to-LED matching [%] 3
Supply voltage [V] 0.15 to 3.6
Package WL-CSP-6, 0.4mm pitch (AS1111A & AS1111B), MLPD-8, 0.5mm pitch (AS1111C)

Additional Information

Applications
  • Portable MP3 and DVD players
  • Mobile and cordless phones
  • PDAs
  • Consumer electronic