DM133

點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

16-Bit Constant Current LED Drivers

-1-

Version

：A.024

DM133

16-Bit Constant Current LED Drivers

with LED Open/Short Detection

General Description

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

Constant Current Output:

Current with one resistor for 5mA to 60mA

Maximum Clock Frequency:

25MHz (Max.)

Power Supply Voltage:

3.3V to 5.0V

CMOS Compatible Input/Output

Package:

HSOP28, SSOP28, QFN32

Constant Current Matching:

10mA ~ 60mA :

Bit-to-Bit :

Chip-to-Chip:

± 10.0% (Max)

5mA ~ 10mA :

Bit-to-Bit :

Chip-to-Chip:

± 12.0% (Max)

Maximum Output Voltage:

17V

Thermal Alarm Function:

Error signal output when junction temperature

exceeds limit

LED Open/Short Detection:

Error signal output when LED is failed

6 bit Linear Global Current Adjustment