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8-bit Constant Current LED Driver with Error Detection

Version:A.002

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DM11C

DM11C

8-bit Constant Current LED Driver

with Error Detection

General Description

DM11C is a constant-current sink driver specifically designed for LED display applications.

The device incorporates shift registers, data latches, and constant current circuitry on the silicon

CMOS chip. The maximum output current value of all 8 channels is adjustable by a single external

resistor. Its built-in open/short detection circuits help users detect LED failures. System retrieve the

error messages to indicate which channel has failure by serial output data. The thermal shutdown

function provides the over temperature protection.

Features

Constant-current outputs: 5mA to 120mA adjustable by one external resistor

Maximum output voltage: 17V

Maximum clock frequency: 25MHz

Built-in real-time LED open/short detection

Fast detecting response: 0.1us (min.)

Over temperature protection: thermal shutdown (junction temperature > 180°C)

Package and pin assignment compatible to conventional LED drivers (ST2221A, DM114/5)

Power supply voltage: 3.3V to 5.5V

Applications

Indoor/Outdoor LED Video Display

LED Variable Message Signs (VMS) System

Package Types

PDIP16, SSOP16, SOP16, SOP16 (with exposed pad), or TSSOP16 (with exposed pad)