8-bit Constant Current LED Driver with Error Detection

Version:PRE.002

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DM11H

DM11H

8-Channel Constant Current LED Driver

With Error Detection

General Description

DM11H is a 8-channel 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 of each channel is set by a

Its built-in LED open/short detection, output channels short to GND detection help users to

detect LED failures, outputs short. The thermal alarm and shutdown functions provide the

over-temperature protection.

Features

8-Channel Constant-current outputs: 5mA to 90mA adjustable by one external resistor

Maximum output voltage: 17V

Maximum cascade clock frequency: 25MHz

7-bit linear global brightness control

Built-in LED open/short detection: Real-time detection or Smart detection

Built-in Outputs short to GND detection: Real-time or Smart detection

Fast detecting response: 100ns (min.)

Over temperature protection:

Alarm (junction temperature > 130°C)

Shutdown (junction temperature > 170°C)

Sleep mode (sleep current : <5uA)

In-rush current control

Schmitt trigger input

Power supply voltage: 3.0V to 5.5V

Package pin assignment compatible to conventional LED drivers (DM114B/115B,DM11C)

Applications

LED Variable Message Signs (VMS) System

Indoor/Outdoor LED Video Display

Packages

SOP16, SSOP16