General Description

The AS1112 is a 16-channel, constant current-sink LEDdriver. Each of the 16 channels can be individually adjusted by 4096-step greyscale PWM brightness control and 64-step constant-current sink (dot correction). The dot correction circuitry adjusts the brightness variations between the AS1112 channels and other LED drivers. Greyscale control and dot correction circuitry are accessible via the SPI-compatible serial interface. A sin

gle external resistor sets the maximum current value of all 16 channels.

Key Features

16 Channels

Greyscale PWM Control: 12-Bit (4096 Steps)

Dot Correction: 6-Bit (64 Steps)

Drive Capability (Constant-Current Sink): 0 to 80mA

LED Power Supply Voltage: Up to 15V

Supply Voltage Range: 3.0 to 5.5 V

SPI-Compatible Serial Interface

Controlled In-Rush Current

Data Transfer & PWM Clock Rate: up to 30 MHz

CMOS Level I/O

Diagnostic Features

 - LED Open/Short Detection

 - Overtemperature Flag

32-pin TQFN 5x5 mm Package

Applications

The device is ideal for mono-, multi-, and full-color LED displays, LED signboards, and display backlights.