TLC5929

www.ti.com

SBVS159

– APRIL 2011

PIN DESCRIPTIONS

PIN

NAME

NO.

I/O

DESCRIPTION

Blank all outputs. When BLANK is high, all constant-current outputs (OUT0 to OUT15) are forced off.

BLANK

21

I

When BLANK is low, all constant-current outputs are controlled by the on/off control data in the data

latch.

Maximum current programming terminal. A resistor connected between IREF and GND sets the

maximum current for every constant-current output. When this terminal is directly connected to GND,

IREF

23

I/O

all outputs are forced off. The external resistor should be placed close to the device and must be in the

range of 1.32 k

Ω to 66.0 kΩ.

Data latch. The rising edge of LAT latches the data from the common shift register into the output

on/off data latch. At the same time, the data in the common shift register are replaced with SID, which

LAT

4

I

is selected by SIDLD. See the Output On/Off Data Latch section and Status Information Data (SID)

section for more details.

GND

1

—

Ground

OUT0

5

O

OUT1

6

O

OUT2

7

O

OUT3

8

O

OUT4

9

O

OUT5

10

O

OUT6

11

O

OUT7

12

O

Constant-current sink outputs. Multiple outputs can be configured in parallel to increase the

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

OUT8

13

O

OUT9

14

O

OUT10

15

O

OUT11

16

O

OUT12

17

O

OUT13

18

O

OUT14

19

O

OUT15

20

O

Serial data shift clock. Data present on SIN are shifted to the LSB of the 17-bit shift register with the

SCLK

3

I

SCLK rising edge. Data in the shift register are shifted toward the MSB at each SCLK rising edge. The

MSB data of the common shift register appear on SOUT.

Serial data input for the 17-bit common shift register. When SIN is high, a

'1' is written to the LSB of

SIN

2

I

the common shift register at the rising edge of SCLK.

Serial data output of the 17-bit common shift register. SOUT is connected to the MSB of the 17-bit shift

SOUT

22

O

register. Data are clocked out at the rising edge of SCLK.

VCC

24

—

Power-supply voltage

Copyright

© 2011, Texas Instruments Incorporated

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