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DM114
、DM115
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
8-BIT CONSTANT CURRENT LED DRIVERS with 3.3V~5V supply voltage
Version:A.002
Page 1
Preliminary
DM114、DM115
8-Bit CONSTANT CURRENT LED DRIVERS with
3.3v ~ 5v Supply Voltage
General Description
The DM114、DM115 is the constant current driver specifically designed for LED display
applications. The value of constant current can be varied using an external resistor. The devices
include an 8-bit shift register, latches, and constant current drivers on a single Silicon CMOS chip.
Features
Maximum Output Voltage:
17V
Maximum Clock Frequency: 25MHz (Cascade Operation)
Power Supply Voltage:
3.3V to 5.0V
CMOS Compatible Input
Package:
PDIP16, SOP16, SSOP16
Package and Pin Layout:
Pin layout and functionality are similar to those of the ST2221A.
(Each characteristic value is different.)
Constant Current Matching: (Ta = 25
°C、VDD = 5.0V)
Chip-to-Chip:
± 10.0%
DM114: Bit-to-Bit:
± 4.0% @ IOUT = 30 ~ 90mA
± 6.0% @ IOUT = 20 ~ 30mA
DM115: Bit-to-Bit:
± 4.0% @ IOUT = 20 ~ 60mA
± 6.0% @ IOUT = 5 ~ 20mA
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