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DM164 Datasheet(PDF) 2 Page - Silicon Touch Technology Inc.

Part # DM164
Description  8x3-CHANNEL CONSTANT CURRENT LED DRIVER
PDF  30 Pages
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Manufacturer  SITI [Silicon Touch Technology Inc.]
Direct Link  http://www.siti.com.tw
Logo SITI - Silicon Touch Technology Inc.

DM164 Datasheet(HTML) 2 Page - Silicon Touch Technology Inc.

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點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
DM164
8x3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 1
DM164
8x3-CHANNEL CONSTANT CURRENT LED DRIVERS
General Description
The DM164 is a LED current sink driver incorporating independent shift registers and
data latches for grayscale PWM data (GD mode
*1) and current adjustment data (D&G
mode
*1), 8x3-channels constant current circuitry with current value set by 3 external
resistors, 65,536 grayscale PWM function unit, 128 levels current adjustment for each
channel and 256 levels global brightness control (White balance). Each channel provides
maximum current of 90mA. The DM164 also supports the LED open detection capability,
thermal alarm and shutdown function. There are two methods to communicate error
signals 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 with current value set by 3 external resistors.
◆
Max PWM clock frequency
Cascade:
36MHz@VDD=3.3V(Refresh rate≒550Hz),
40MHz@VDD=5V (610Hz)
◆
Max data clock frequency
Cascade:
30MHz@VDD=3.3V, 35MHz@VDD=5V
◆
Maximum output current: 90mA
◆
Maximum output voltage: 17V
◆
16-bit grayscale for each LED
◆
8-bit current adjustment for global brightness control (White Balance)
◆
7-bit current adjustment for each LED (Dot Correction)
◆
Supply Voltage: 3V to 5.5V
◆
LED Open Detection
◆
Thermal Alarm and Shutdown
Alarm (junction temperature >130
oC)
Shutdown (junction temperature > 170
oC)
◆
One-Shot Option
◆
Built-in Buffer for Data, PWM Clock, Latch signal and Data Clock
◆
Average Separate IOUT PWM Waveform Option
Package
LQFP48 (7mmX7mm), QFN48 (7mmX7mm)
*1: See Page 10



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