TLC59281 Datasheet, PDF (7/19 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver

TLC59281
www.ti.com
TERMINAL
NAME
DBQ
SIN
2
SCLK
3
LAT
4
BLANK
21
IREF
23
SOUT
22
OUT0
5
OUT1
6
OUT2
7
OUT3
8
OUT4
9
OUT5
10
OUT6
11
OUT7
12
OUT8
13
OUT9
14
OUT10
15
OUT11
16
OUT12
17
OUT13
18
OUT14
19
OUT15
20
VCC
24
GND
1
RGE
23
24
1
18
20
19
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
21
22
TERMINAL FUNCTIONS
SBVS139 – JANUARY 2010
I/O
DESCRIPTION
I
Serial data input for driver on/off control. When SIN = high level, data '1' are written into LSB
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
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
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
I forced off. When BLANK = low level, all constant-current outputs are controlled by the on/off
control data in the data latch.
I/O
Constant-current value setting, OUT0–OUT15 sink constant-current is set to desired value by
connection to an external resistor between IREF and GND.
O
Serial data output. This output is connected to the MSB of the on/off data shift register. SOUT
data changes at the rising edge of SCLK.
O
Constant-current output. Each output can be tied together with others to increase the
constant-current. Different voltages can be applied to each output.
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
O Constant-current output
— Power-supply voltage
— Power ground
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TLC59281
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