TLC59283 Datasheet, PDF (6/25 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with Pre-Charge FET

TLC59283
SBVS199A – JUNE 2012 – REVISED JUNE 2012
www.ti.com
NAME
PIN
NUMBER
DBQ
RGE
BLANK
21
18
GND
1
22
IREF
23
20
LAT
4
1
OUT0
5
2
OUT1
6
3
OUT2
7
4
OUT3
8
5
OUT4
9
6
OUT5
10
7
OUT6
11
8
OUT7
12
9
OUT8
13
10
OUT9
14
11
OUT10
15
12
OUT11
16
13
OUT12
17
14
OUT13
18
15
OUT14
19
16
OUT15
20
17
SCLK
3
24
SIN
2
23
SOUT
22
19
VCC
24
21
PIN DESCRIPTIONS
I/O
DESCRIPTION
All outputs empty (blank); Schmitt buffer input. When BLANK is high, all constant-current outputs
I
(OUT0 to OUT15) are forced off and all pre-charge FETs are turned on. When BLANK is low, all
constant-current outputs are controlled by the data in the output on or off data latch and all pre-
charge FETs are turned off. This pin is internally pulled up to V_CC with a 500-kΩ (typ) resistor.
— Power ground
I/O
Constant-current value setting, the OUT0 to OUT15 sink constant-current outputs are set to the
desired values by connecting an external resistor between IREF and GND.
Level-triggered latch; Schmitt buffer input. The data in the 16-bit shift register continue to transfer
to the output on or off data latch while LAT is high. Therefore, if the data in the 16-bit shift register
I are changed when LAT is high, the data in the data latch are also changed. The data in the data
latch are held when LAT is low. This pin is internally pulled down to GND with a 500-kΩ (typ)
resistor.
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
I
Serial data shift clock; Schmitt buffer input.
All data in the 16-bit shift register are shifted toward the MSB by a 1-bit SCLK synchronization.
Serial data input for driver on or off control; Schmitt buffer input.
I
When SIN is high, the LSB is set to '1' for only one SCLK input rising edge. If two SCLK rising
edges are input while SIN is high, then the 16-bit shift register LSB and LSB+1 are set to '1'.
When SIN is low, the LSB is set to '0' at the SCLK input rising edge.
O
Serial data output. This output is connected to the 16-bit shift register MSB. SOUT data changes
at the SCLK rising edge.
— Power-supply voltage
6
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