TLC5928_16 Datasheet, PDF (7/32 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with LED Open Detection

TLC5928
www.ti.com
NAME
TERMINAL
DBQ/PW/
PWP
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
SBVS120E – JULY 2008 – REVISED JANUARY 2011
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 LED open detection (LOD) and pre-thermal warning (PTW) data.
LAT must be toggled only once after the shift data are updated to avoid the on/off control latch
data being replaced with LOD and PTW data in the shift register.
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. LOD and PTW data are latched into the SID data latch at the
rising edge of BLANK and are present at the output of the SID data latch when BLANK is low.
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
© 2008–2011, Texas Instruments Incorporated
Product Folder Link(s): TLC5928
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