Ver 1.1

3

LD1074

16-Channel Constant Current LED Driver With 16-Bit PWM Control and Dot-Correction

Pin Configuration

Pin Name

Function

GND

Ground terminal for control logic and current sink

SDI

Serial data input to the shift register

DCLK

Clock input terminal used to shift data on rising edge and carries command information when

LE is asserted.

LE

Data strobe terminal and controlling command with DCLK

OUT0~OUT15

Constant current output terminals

GCLK

Gray scale clock terminal

Clock input for gray scale. The gray scale display is counted by gray scale clock comparing

with input data.

SDO

Serial data output to the SDI of next driver IC

R-EXT

Input terminal used to connect an external resistor for setting up output current for all output

channels

VDD

3.3V/5V supply voltage terminal

Terminal Description

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

GND

SDI

DCLK

LE

OUT0

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

VDD

R-EXT

SDO

GCLK

OUT15

OUT14

OUT13

OUT12

OUT11

OUT10

OUT9

OUT8

SSOP/TSSOP

GFN

1

2

3

4

5

6

18

17

16

15

14

13

24 23 22 21 20 19

7

8

9 10 11 12

LE

OUT0

OUT1

OUT2

OUT3

OUT4

OUT15

OUT14

OUT13

OUT12

OUT11

OUT10