16-bit Constant Current LED Driver with Error Detection

Version:A.002

Page 1

未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任

Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.

DM13G

DM13G

16-bit Constant Current LED Driver

With Error Detection

General Description

DM13G 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 16 channels is

adjustable by a single external resistor. The global current also can be further adjusted by

detection and thermal alarm circuits help users detect LED failures, outputs short and

overheating. There are two methods to communicate the error messages to the system.

One is through serial output data to indicate which channel has failure. The other is by

means of dedicated Alarm pin.

Features

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

Maximum output voltage: 17V

Maximum clock frequency: 30MHz

7-bit linear global brightness control

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

Outputs short to GND detection: Smart detection

Fast detecting response: 100ns (min.)

Over temperature protection:

Alarm (junction temperature > 130°C)

Shutdown (junction temperature > 170°C)

Sleep mode selection :sleep current < 5uA (typ.)

Ghost image elimination

In-rush current control

Schmitt trigger input

Power supply voltage: 3.0V to 5.5V

Applications

LED Variable Message Signs (VMS) System

Indoor/Outdoor LED Video Display

Package

SSOP28, TSSOP28E, QFN32