TLC5928_1 Datasheet, PDF (10/28 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with LED Open Detection

TLC5928
SBVS120B – JULY 2008 – REVISED OCTOBER 2008...................................................................................................................................................... www.ti.com
SIN
DATA
0A
T_SU0
DATA
15B
DATA DATA
14B 13B
T_H0
DATA
12B
DATA
11B
T_WH0
SCLK
1 234 5
DATA DATA DATA
3B
2B
1B
DATA
0B
T_H1
13 14 15 16
LAT
DATA DATA DATA DATA DATA DATA
15C 14C 13C 12C 11C 10C
T_SU1
T_WH1
1 234 56
T_WL0
Shift Register DATA
LSB Data (Internal) ^0A
LOD DATA DATA DATA DATA
0
15B 14B 13B 12B
Shift Register DATA
LSB+1 Data (Internal) ^1A
LOD LOD DATA DATA DATA
1
0
15B 14B 13B
DATA DATA DATA DATA
3B
2B
1B 0B
LOD 0A or PTW_A
DATA DATA DATA DATA DATA
15C 14C 13C 12C 11C
DATA DATA DATA
4B
3B
2B
LOD 1A or PTW_A
LOD DATA DATA DATA DATA
0A 15C 14C 13C 12C
Shift Register DATA
MSB-1 Data (Internal) ^14A
Shift Register DATA
MSB Data (Internal) ^15A
LOD LOD LOD LOD LOD
14
13
12
11
10
LOD LOD LOD LOD LOD
15
14
13
12
11
On/Off Control
Latch Data (Internal)
LOD LOD DATA
1
0
15B
LOD 14A or PTW_A
LOD LOD LOD LOD LOD
13A 12A 11A 10A 9A
LOD LOD LOD DATA _{LOD 15A or PTW_A}
2
1
0 15B
LOD LOD LOD LOD LOD
14A 13A 12A 11A 10A
Previous Grayscale Latch Data
Latest Grayscale Latch Data
SOUT
BLANK
DATA
15A
LOD LOD LOD LOD LOD
15
14
13
12
11
t_D0
t_R0/t_F0
LOD LOD LOD DATA _{LOD 15A or PTW_A}
2
1
0 15B
LOD LOD LOD LOD LOD
14A 13A 12A 11A 10A
t_WH2
t_WL2
OFF
OUTn⁽¹⁾ _ON
OFF
OUTn⁽²⁾ _ON
OFF
OUTn⁽³⁾ _ON
OFF
OUTn⁽⁴⁾ _ON
t_D1
ON
t_D1
ON
t_F1
tD2
OFF
t_D1
ON
OFF
t_{D2 OFF}
ON
t_OUTON
OFF
t_R1
(1) On/off latched data are '1'.
(2) On/off latched data are changed from '1' to '0' at the second LAT signal.
(3) On/off latched data are changed from '0' to '1' at the second LAT signal.
(4) On/off latched data are '0'.
Figure 9. Timing Diagram
10
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