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LD1072

16-CH LED DRIVER WITH DOT CORRECTION AND 12-BIT PWM CONTROL

DESCRIPTION

The LD1072 is a 16-channel, constant-current sink, LED driver. Each channel has a individually

adjustable12- Bit PWM brightness control and a 64-step/256-step dot correction. The dot correction adjusts the

brightness variations between LED channels and other LED Drivers. In 8-Bit Mode, LD1072 has 256-step

Programmable Adjust Data Mode which controls 16 output current simultaneously. Both PWM control and dot

correction are accessible via a serial interface. An external resistor sets the maximum current value of all 16

channels.

The LD1072 features two error information circuits. The LED open detection (LOD) indicates a broken or

disconnected LED at an output terminal. The thermal error flag (TEF) indicates an over temperature status.

FEATURES

•

16 Channels

•

12-Bit (4096 Steps) Grayscale PWM Control

•

Dot Correction

- 6-Bit (64 Steps) / 8-Bit (256 Steps)(±

±

±

± 33%)

•

Programmable Adjust Output Current for 16Channel

- 8-Bit (256 Steps)

•

Drive Capability (Constant-Current Sink)

- 0 mA to 80 mA (6-Bit)

- 0 mA to 60 mA (8-Bit)

• LED Power Supply Voltage up to 17 V

•

VDD = 3.0 V to 5.5 V

•

Serial Data Interface

•

Controlled In-Rush Current

•

30-MHz Data Transfer Rate

•

CMOS Level I/O

•

Error Information

- LOD : LED Open Detection

- TEF : Thermal Error Flag

Package : 28 Pin TSSOP

GND

OEB

ST

CLK

DIN

MOD

OUT0

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

VDD

REXT

DC

PWMCK

DO

ERR

OUT15

OUT14

OUT13

OUT12

OUT11

OUT10

OUT9

OUT8

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

Thermal Exposed PACKAGE

(TOP VIEW)

Thermal

PAD

PIN CONFIGURATION

ORDERING INFORMATION

PART NUMBER

PACKAGE

TA

LD1072-SS

28 TSSOP

-40°C to 85 °C