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DM13C Datasheet(PDF) 16 Page - Silicon Touch Technology Inc.

Part # DM13C
Description  Maximum output voltage: 17V
PDF  27 Pages
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Manufacturer  SITI [Silicon Touch Technology Inc.]
Direct Link  http://www.siti.com.tw
Logo SITI - Silicon Touch Technology Inc.

DM13C Datasheet(HTML) 16 Page - Silicon Touch Technology Inc.

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16-bit Constant Current LED Driver with Error Detection
Version:A.006
Page 15
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.
DM13C
Threshold of Short Detection
The default threshold voltage for LED short detection of DM13C is 1/2 VCC. One could
change the default voltage by switching or setting a new voltage of VLED during short detection is
going on. Please see the example below for reference:
Power
System
Example for shifting the threshold of LED short detection
DM13C
DAI
DAO
1
DM13C
DAI
DAO
2
DM13C
DAI
DAO
n-1
DM13C
DAI
DAO
n
VSHORT
Controller
VLED
Note that the VSHORT should be satisfied with the following inequality:
VCC < VSHORT <
VCC + VF(LED forward voltage) × N(Numbers of LED in a string)
1
2
1
2
The new threshold voltage of short detection will be equivalent to:
1
2
VCC + ( VLED–VSHORT )



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