DM634 Datasheet (SiTi) - 16-CHANNEL CONSTANT CURRENT LED DRIVER

DM634, 16-CHANNEL CONSTANT CURRENT LED DRIVER

DM634 is a 16-channel constant current sink LED driver.

Each channel has adjustable 16-bits (65536 steps) grayscale PWM control current outputs.

7-bit global brightness control is included in supporting user to adjust chip current easily.

It incorporates shift registers, data latches, constant cu

DM634 Version : A.002 Issue Date : 2008/05/12 File Name : SP-DM634-A.002.doc Total Pages : 27 16-CHANNEL CONSTANT CURRENT LED DRIVER WITH PROGRAMMABLE PWM OUTPUTS 9 7 1 SILICON TOUCH TECHNOLOGY INC.

9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C.

Tel：886-3-5645656 Fax：886-3-5645626 SILICON TOUCH TECHNOLOGY INC.

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

Tel：886-3-5645656 Fax：886-3-5645626 DM634 DM634 16-CHANNEL CONSTANT CURRE

DM634 Features

* z Constant-current outputs: 5mA to 90mA z 16-bit linear PWM control current output per channel z 7-bit high accuracy global brightness control z Maximum output voltage: 17V z Maximum clock frequency: 25MHz z Selectable internal/external PWM reference clock z PWM free-running capability (refresh rate