TLC59281

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SBVS139 – JANUARY 2010

TERMINAL FUNCTIONS

TERMINAL

NAME

DBQ

RGE

I/O

DESCRIPTION

Serial data input for driver on/off control. When SIN = high level, data '1' are written into LSB

SIN

2

23

I

of the on/off control shift register at the rising edge of SCLK.

Serial data shift clock. Schmitt buffer input. All data in the on/off control shift register are

SCLK

3

24

I

shifted toward the MSB by 1-bit synchronization of SCLK. A rising edge on SCLK is allowed

100 ns after a rising edge of LAT.

Edge triggered latch. The data in the on/off control data shift register are transferred to the

on/off control data latch at this rising edge. At the same time, the data in the on/off control shift

LAT

4

1

I

register are replaced with TI reserved data for production test. LAT must be toggled only once

after the shift data are updated to avoid the on/off control latch data being replaced with TI

reserved data in the shift register. The reserved data is not a fixed number.

Blank, all outputs. When BLANK = high level, all constant-current outputs (OUT0–OUT15) are

BLANK

21

18

I

forced off. When BLANK = low level, all constant-current outputs are controlled by the on/off

control data in the data latch.

Constant-current value setting, OUT0–OUT15 sink constant-current is set to desired value by

IREF

23

20

I/O

connection to an external resistor between IREF and GND.

Serial data output. This output is connected to the MSB of the on/off data shift register. SOUT

SOUT

22

19

O

data changes at the rising edge of SCLK.

Constant-current output. Each output can be tied together with others to increase the

OUT0

5

2

O

constant-current. Different voltages can be applied to each output.

OUT1

6

3

O

Constant-current output

OUT2

7

4

O

Constant-current output

OUT3

8

5

O

Constant-current output

OUT4

9

6

O

Constant-current output

OUT5

10

7

O

Constant-current output

OUT6

11

8

O

Constant-current output

OUT7

12

9

O

Constant-current output

OUT8

13

10

O

Constant-current output

OUT9

14

11

O

Constant-current output

OUT10

15

12

O

Constant-current output

OUT11

16

13

O

Constant-current output

OUT12

17

14

O

Constant-current output

OUT13

18

15

O

Constant-current output

OUT14

19

16

O

Constant-current output

OUT15

20

17

O

Constant-current output

VCC

24

21

—

Power-supply voltage

GND

1

22

—

Power ground

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