DM135B 데이터 시트보기 (PDF) - Silicon Touch Technology Inc.

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DM135B

16-Bit Constant Current LED Drivers with 3.3v ~ 5v Supply Voltage

Silicon Touch Technology Inc. 

點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

Block Diagram

OUT0 OUT1

R-EXT

I-REG.

DM134B、DM135B

OUT15

ENABLE

LATCH

SERIAL-IN

CLOCK

Q

ST D

Q

ST D

DQ

CK

DQ

CK

Q

ST D

DQ

CK

SERIAL-OUT

Timing Diagram

16 Clocks

CLOCK

5V

0V

SERIAL_IN

5V

0V

LATCH

5V

0V

ENABLE

5V

0V

SERIAL_OUT

Previous Data

5V

0V

OUT0

ON

OFF

OUT1

ON

OFF

OUT2

ON

OFF

OUT3

ON

OFF

OUT13

ON

OFF

OUT14

ON

OFF

OUT15

ON

OFF

(Note) Latches are level sensitive (not edge triggered).

LATCH-terminal = H level, latches become transparent; LATCH-terminal = L level, latches hold data.

ENABLE-terminal = H level, all outputs (OUT0~15) are off.

An external resistor is connected between R-EXT and GND for setting up the value of constant current.

SERIAL-OUT changes state on the rising edges of clock.

16-Bit Constant Current LED Drivers

-3-

Version：A.006

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