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SiTi |
DM133
Version : A.024
Issue Date : 2004/07/05
File Name : SP-DM133-A.024.doc
Total Pages : 20
16-Bit Constant Current LED Drivers
With LED Open/Short Detection
新竹市科學園區展業一路 9 號 7 樓之 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
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
DM133
16-Bit Constant Current LED Drivers
with LED Open/Short Detection
General Description
DM133
The DM133 is a constant current driver specifically designed for LED display
applications. The device includes a 16-bit shift register, two latches, and constant
current drivers on a single Silicon CMOS chip. Its built-in open/short detection and
thermal alarm circuits help the user to detect the overheating of the IC and LED
failures. Its user-friendly design allows the user to adjust the output current (5~60mA)
by using an external resistor. The current also can be further tuned by 6-bit serial
shift-in data.
Features
z Constant Current Output:
Current with one resistor for 5mA to 60mA
z Maximum Clock Frequency: 25MHz (Max.)
z Power Supply Voltage:
3.3V to 5.0V
z CMOS Compatible Input/Output
z Package:
HSOP28, SSOP28, QFN32
z Constant Current Matching:
10mA ~ 60mA :
Bit-to-Bit : ± 4.0% (Max)、
Chip-to-Chip: ± 10.0% (Max)
5mA ~ 10mA :
Bit-to-Bit : ± 6.0% (Max)、
z Maximum Output Voltage:
Chip-to-Chip: ± 12.0% (Max)
17V
z Thermal Alarm Function:
Error signal output when junction temperature
exceeds limit
z LED Open/Short Detection: Error signal output when LED is failed
z 6 bit Linear Global Current Adjustment
16-Bit Constant Current LED Drivers
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Version:A.024
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