Description

The AS1112-BQFT is a 16-channel, constant current-sink LED driver. It features individual channel adjustment with 4096-step greyscale PWM brightness control and 64-step constant-current sink (dot correction). With the dot correction circuitry, the AS1112 ensures consistent brightness across its channels and other LED drivers. It offers a wide range of features and is accessible via the SPI-compatible serial interface. Additionally, it can be set to a maximum current value using a single external resistor.

Specifications and 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

Application Scenarios

The AS1112-BQFT is especially suitable for mono-, multi-, and full-color LED displays, LED signboards, and display backlights.

Comparison

• Adjustable brightness control for individual channels
• Offers consistent brightness across channels and other LED drivers
• Wide range of features
• Accessible via SPI-compatible serial interface
• Easy to set maximum current value using a single external resistor

• No specific disadvantages have been reported for this model.