AS1111 - ams

AS1111 Low-Dropout LED Drivers

The AS1111A/AS1111B/AS1111C are 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, and the LED current is programmable using an external resistor (RSET). The AS1111A LED currents are 460 x ISET (per LED, typ) at an LED cathode voltage (VSAT) of 150mV and 650 x ISET .

Features

The benefits and features of AS1111, Low
  –Dropout LED Drivers are listed below: High efficient Benefits Supports a variety of end applications Extended battery life Suitable for EMF sensitive environment Small PCB area Cost effective, small package Features
• Ultra Low Voltage Drop: less than 150mV
• Analog and PWM Brightness Control
• Up to 80mA per LED (AS1111A)
• Up to 40mA per LED (AS1111B, AS1111C)
• Active-Low Shutdown Mode
• Low Shutdown Current: less than 1μA
• No electromagnetic interference
• No switching noise
• Less external components needed
• 6-pin WL-CSP with 0.4mm pitch
• 8.