點晶科技股�½有限公司
SILICON TOUCH TECHNOLOGY INC.
DM115B
DM115B
8-Bit CONSTANT CURRENT LED DRIVERS with
3.3v ~ 5v Supply Voltage
General Description
The DM115B 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:
Maximum Clock Frequency:
Power Supply Voltage:
CMOS Compatible Input
Package:
Package and Pin Layout:
17V
25MHz (Cascade Operation)
3.3V to 5.0V
PDIP16, SOP16, SSOP16
Pin layout and functionality are similar to those of the ST2221A.
(Each characteristic value is different.)
Constant Current Matching: (Ta = 25°C、V
DD
= 5.0V)
Chip-to-Chip:
±
10.0%
Bit-to-Bit:
±
4.0% @ I
OUT
= 20 ~ 60mA
±
6.0% @ I
OUT
= 5 ~ 20mA
8-BIT CONSTANT CURRENT LED DRIVERS with 3.3V~5V supply voltage
Version:A.001
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