TLC5949 Datasheet, PDF (16/51 Pages) Texas Instruments – 16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC LED Lamp

TLC5949
SBVS219A – DECEMBER 2012 – REVISED DECEMBER 2012
www.ti.com
100k
10k
1k
TYPICAL CHARACTERISTICS
At T_A = +25°C, unless otherwise noted.
25380
10152
70
V_CC = 3.3 V
60 ^{BC = 7Fh}
V_OUTn = 0.8 V
50 ^TA ^{= +25°C}
I_OLCMax = 45 mA
5076
3384
2538
1692
2030
1450
1269 _{1128 923}
1015 ₈₄₆
40
I_OLCMax = 30 mA
30
I_OLCMax = 20 mA
20
I_OLCMax = 2 mA I_OLCMax = 5 mA I_OLCMax = 10 mA
10
100
0
10
20
30
40
50
60
I_OLC, Output Current (V)
G001
Figure 12. REFERENCE RESISTOR
vs OUTPUT CURRENT
0
0
0.5
1
1.5
2
2.5
3
Output Voltage (V)
G011
Figure 13. OUTPUT CURRENT vs
OUTPUT VOLTAGE (+3.3 V)
49
V_CC = 3.3 V
48 BC = 7Fh
V_OUTn = 0.8 V
47 _{RIREF = 1.13 kW}
46
45
44
43
42
41
0
T_A = -40°C
T_A = +25°C
T_A = +85°C
0.5
1
1.5
2
2.5
3
Output Voltage (V)
G013
Figure 14. OUTPUT CURRENT vs
OUTPUT VOLTAGE (+3.3 V)
3
2
1
0
-1
-2
-3
0
T_A = +25°C
BC = 7Fh
V_LED = 0.8 V
10
20
30
40
50
60
Output Current (mA)
G003
Figure 15. CONSTANT-CURRENT ERROR
vs OUTPUT CURRENT
3
R_IREF = 1.13 kW
2
BC = 7Fh
V_LED = 0.8 V
1
0
-1
-2
-3
-40 -20
0
20
40
60
80 100
Ambient Temperature (°C)
G004
Figure 16. CONSTANT-CURRENT ERROR vs
AMBIENT TEMPERATURE
70
I_O = 60 mA
60
I_O = 45 mA
50
I_O = 30 mA
40
30
20
I_O = 2 mA
I_O = 10 mA
10
0
0 16 32 48 64 80 96 112 128
BC Data (Decimal)
G006
Figure 17. GLOBAL BRIGHTNESS CONTROL LINEARITY
16
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