TLC5947 Datasheet, PDF (11/27 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with

TLC5947
www.ti.com ................................................................................................................................................. SBVS114A – JULY 2008 – REVISED SEPTEMBER 2008
TYPICAL CHARACTERISTICS
At V_CC = 3.3 V and T_A = +25°C, unless otherwise noted.
100000
REFERENCE RESISTOR
vs OUTPUT CURRENT
24600
10000
1000
0
9840
4920
3280
2460
1968
1640
5
10
15
20
25
30
Output Current (mA)
Figure 10.
35 _{TA = +25°C}
30
25
20
OUTPUT CURRENT vs
OUTPUT VOLTAGE
I_O = 30 mA
I_O = 25 mA
I_O = 20 mA
I_O = 15 mA
15
I_O = 10 mA
10
I_O = 2 mA
5
I_O = 5 mA
0
0
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage (V)
Figure 12.
ΔI_OLC vs AMBIENT TEMPERATURE
4
I_O = 30 mA
3
2
1
0
-1
-2
-3
-4
-40 -20
V_CC = 3.3 V
V_CC = 5 V
0
20
40
60
Ambient Temperature (°C)
Figure 14.
80 100
POWER DISSIPATION RATE
vs FREE-AIR TEMPERATURE
6000
5000
4000
TLC5947RHB
3000
TLC5947DAP
2000 PowerPAD Not Soldered
TLC5947DAP
PowerPAD Soldered
1000
0
-40 -20
0
20
40
60
80 100
Free-Air Temperature (°C)
Figure 11.
35
I_O = 30 mA
34
OUTPUT CURRENT vs
OUTPUT VOLTAGE
33
32
31
30
29
28
27
26
25
0
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 13.
ΔI_OLC vs OUTPUT CURRENT
4
T_A = +25°C
3
2
1
0
-1
-2
-3
-4
0
V_CC = 3.3 V
V_CC = 5 V
5
10
15
20
25
30
Output Current (mA)
Figure 15.
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