TLC5951 Datasheet, PDF (19/46 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control

TLC5951
www.ti.com
SBVS127B – MARCH 2009 – REVISED DECEMBER 2009
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C and V_CC = 3.3 V, unless otherwise noted.
CONSTANT-CURRENT ERROR vs OUTPUT
(Channel-to-Channel, RED Color)
4
Constant Current = 2 mA to 40 mA
3 ^{Set By BCR with Low Adjustment Range}
T_A = +25°C, I_OLCMax = 40 mA
2 _{DCRn = FFh}
CONSTANT-CURRENT ERROR vs OUTPUT
(Channel-to-Channel, GREEN Color)
4
Constant Current = 2 mA to 40 mA
3 ^{Set By BCG with Low Adjustment Range}
T_A = +25°C, I_OLCMax = 40 mA
2 _{DCGn = FFh}
1
1
0
0
-1
-1
-2
-3
V_CC = 3.3 V
V_CC = 5 V
-4
0
10
20
30
40
Output Current (mA)
Figure 32.
-2
-3
V_CC = 3.3 V
V_CC = 5 V
-4
0
10
20
30
40
Output Current (mA)
Figure 33.
CONSTANT-CURRENT ERROR vs OUTPUT
(Channel-to-Channel, BLUE Color)
4
Constant Current = 2 mA to 40 mA
3 ^{Set By BCB with Low Adjustment Range}
T_A = +25°C, I_OLCMax = 40 mA
2 _{DCBn = FFh}
1
0
-1
-2
-3
V_CC = 3.3 V
V_CC = 5 V
-4
0
10
20
30
40
Output Current (mA)
Figure 34.
DOT CORRECTION LINEARITY
(I_OLCMax with Upper Range)
45
High Adjustment Range
40 T_A = +25°C, BCx = FFh
35 ^{VCC = 3.3 V}
I_O = 40 mA
30
25
20
15
I_O = 20 mA
10
5
I_O = 2 mA
0
0 16 32 48 64 80 96 112 128
Dot Correction Data (dec)
Figure 35.
DOT CORRECTION LINEARITY
(I_OLCMax with Lower Range)
45
Low Adjustment Range
40 T_A = +25°C, BCx = FFh
35 ^{VCC = 3.3 V}
30
25
20
I_O = 40 mA
15
I_O = 20 mA
10
5
I_O = 2 mA
0
0 16 32 48 64 80 96 112 128
Dot Correction Data (dec)
Figure 36.
DOT CORRECTION LINEARITY
(I_OLCMax with Upper and Lower Range)
45
I_OLCMax = 40 mA
40 _{BCx = FFh}
35 ^{VCC = 3.3 V}
High Adjustment Range
30
25
20
15
10
5
0
0
Low Adjustment Range
T_A = -40°C
T_A = +25°C
T_A = +85°C
16 32 48 64 80 96 112 128
Dot Correction Data (dec)
Figure 37.
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