點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC

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新竹市科學園區展業一路9號7樓之1

9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.

Tel：886-3-5645656

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16-channel 16-bit PWM Constant Current LED Driver

Version : A.003

Page 2

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DM634

Block Diagram

DAI

DCK

LAT

DAO

SOMODE/

GCK

REXT

OUT 0

OUT 15

16-bit

Counter

16

16

16

16

16

16

7-bit High

Accuracy Global

Brightness

Control

VCC

GND

16-bit Shift Register

(1)

16-bit Shift Register

(15)

16-bit Latch Register

(0)

16-bit Latch Register

(1)

16-bit Latch Register

(15)

16-bit Shift Register

(0)

16-bit PWM Generator

(0)

16-bit PWM Generator

(1)

16-bit PWM Generator

(15)

OUT 1

LED Open/Short

Detector

(0)

LED Open/Short

Detector

(1)

LED Open/Short

Detector

(15)

Constant Current Driver

(0)

Constant Current Driver

(1)

Constant Current Driver

(15)