TLC5929 Datasheet, PDF (13/36 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with 7-Bit Global Brightness Control, Power-Save Mode

TLC5929
www.ti.com
SBVS159 – APRIL 2011
TYPICAL CHARACTERISTICS
At T_A = +25°C, unless otherwise noted.
REFERENCE RESISTOR
vs OUTPUT CURRENT
OUTn CURRENT vs
OUTPUT VOLTAGE (+3.3 V)
100
66.0
33.0
60
V_CC = 3.3 V, BC = 7Fh, V_OUTn = 0.8 V
50
40
I_OLCMax = 40 mA
10
1
0
13.2
6.60
4.40
3.30
2.64
2.20
1.89 _{1.65 1.47}
1.32
10
20
30
40
50
I_OLCMax (V)
Figure 8.
30
20
10
0
0
I_OLCMax = 30 mA
I_OLCMax = 20 mA
I_OLCMax = 2 mA
I_OLCMax = 1 mA
I_OLCMax = 10 mA
I_OLCMax = 5 mA
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage (V)
Figure 9.
46
45
44
43
42
41
40
39
38
0
OUTn CURRENT vs
OUTPUT VOLTAGE (+3.3 V)
V_CC = 3.3 V
BC = 7Fh
R_IREF = 1.58 kW
V_OUTn = 0.8 V
T_A = -40°C
T_A = +25°C
T_A = +85°C
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage (V)
Figure 10.
OUTn CURRENT vs
OUTPUT VOLTAGE (+5 V)
60
V_CC = 5 V, BC = 7Fh, V_OUTn = 0.8 V, (50 mA = 1 V)
50
I_OLCMax = 50 mA
I_OLCMax = 40 mA
40
I_OLCMax = 30 mA
30
I_OLCMax = 20 mA
20
I_OLCMax = 2 mA
I_OLCMax = 10 mA
10
I_OLCMax = 1 mA
I_OLCMax = 5 mA
0
0
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage (V)
Figure 11.
56
55
54
53
52
51
50
49
48
0
OUTn CURRENT vs
OUTPUT VOLTAGE (+5 V)
V_CC = 5 V
BC = 7Fh
R_IREF = 1.28 kW
V_OUTn = 1 V
T_A = -40°C
T_A = +25°C
T_A = +85°C
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage (V)
Figure 12.
CONSTANT-CURRENT ERROR
vs OUTPUT CURRENT SET BY R_IREF or BC DATA
(Channel-to-Channel)
3
BC = 7Fh
2
V_OUTn = 0.8 V
(50 mA = 1 V)
1
0
-1
-2
-3
0
V_CC = 3.3 V
V_CC = 5 V
10
20
30
40
50
Output Current (mA)
Figure 13.
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