TLC59282 Datasheet, PDF (15/21 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with 4-Channel Grouped Delay

TLC59282
www.ti.com
SBVS152A – DECEMBER 2010 – REVISED DECEMBER 2010
SCLK
SIN
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
LAT
BLANK
OUT0
OUT1
OUT2
OUT3
D0
OFF
ON
OFF
D1
ON
OFF
D2
ON
D3
OFF
ON
OUT15
OFF
D15
ON
SOUT
Don’t Care
D15
Figure 18. Operation Timing Diagram
SCLK
↑
↑
↑
↓
↓
Table 3. Truth Table in Operation
LAT
High
Low
High
—
—
BLANK
Low
Low
Low
Low
High
SIN
Dn
Dn + 1
Dn + 2
Dn + 3
Dn + 3
OUT0…OUT7…OUT15
Dn…Dn – 7…Dn – 15
No change
Dn + 2…Dn – 5…Dn – 13
Dn + 2…Dn – 5…Dn – 13
Off
SOUT
Dn – 15
Dn – 14
Dn – 13
Dn – 13
Dn – 13
NOISE REDUCTION
Large surge currents may flow through the IC and the board if all 16 outputs turn on or off simultaneously. These
large current surges could induce detrimental noise and electromagnetic interference (EMI) into other circuits.
The TLC59282 independently turns on or off the outputs for each color group with a 20 ns (typ) delay time; see
Figure 9. The output current sinks are grouped into four groups. The first group that is turned on/off are
OUT0/7/8/15; the second group that is turned on/off are OUT1/6/9/14; the third group that is turned on/off are
OUT2/5/10/13; and the fourth group is OUT3/4/11/12. Both turn-on and turn-off are delayed. However, the state
of each output is controlled by the data in the output on-off data latch and BLANK level.
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TLC59282
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