DM134B

點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

16-Bit Constant Current LED Drivers

-1-

Version

：A.006

DM134B、DM135B

16-Bit Constant Current LED Drivers with

3.3v ~ 5v Supply Voltage

General Description

The DM134B、DM135B are constant current drivers specifically designed for LED display

applications. The value of constant current can be varied using an external resistor. The devices

include a 16-bit shift register, latches, and constant current drivers on a single Silicon CMOS

chip.

Features

3.3V~5V CMOS Compatible Input

Maximum Clock Frequency: 25MHz (Cascade Operation)

Maximum Output Voltage:

17V

Package:

DIP24, SOP24, SSOP24, QFN32

Package and Pin Layout:

Pin layout and functionality are similar to those of the ST2221C.

(Each characteristic value is different.)

Constant Current Matching: (Ta = 25

Chip-to-Chip:

± 10.0%

Bit-to-Bit:

DM134B:

DM135B: