點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
DM163
8x3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version: A.004
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DM163
8x3-CHANNEL CONSTANT CURRENT LED DRIVERS
General Description
The DM163 is a LED driver that comprises shift registers, data latches, 8x3-channel
constant current circuitry with current value set by 3 external resistors, and 64 x 256 gray
level PWM (Pulse Width Modulation) function unit.
Each channel provides a maximum
current of 60 mA. The grayscale data are separated into BANK0 and BANK1 respectively,
selected by SELBK pin. BANK0 is 6-bits grayscale data and the BNAK1 is 8-bits grayscale
data. Depending on the system requirement, both PWM banks could be utilized jointly to
achieve maximum 8+6 bit grayscale performance. Alternatively, users can choose either
64-graylevel bank or 256-graylevel bank for dot correction, and the remaining bank as
image data.
DM163 could also be constructed as a PWM controller for LED drivers. When VDDH
is connected to VDD, each of the 24 output channels outputs can act as an inverse digital
signal for controlling the LED driver.
Features
24 Output Channels
8 + 6-bits PWM grayscale Control
Constant Current Output: 5mA to 60mA
LED Power Supply Voltage up to 17V
VDD=3V to 5.5V
Varied Output Current Level Set By 3 External Resistors
Serial Shift-In Architecture for Grayscale Data
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