TLC5948A Datasheet, PDF (16/50 Pages) Texas Instruments – 16-Channel, 16-Bit, ES-PWM, Full Self-Diagnosis LED Driver

TLC5948A
SBVS192 – MARCH 2012
www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, unless otherwise noted.
CONSTANT-CURRENT ERROR vs
AMBIENT TEMPERATURE
DOT CORRECTION LINEARITY
3
R_IREF = 1.13 kW
2
BC and DC = 7Fh
V_LED = 0.8 V
1
0
70
V_CC = 3.3 V
60
V_CC = 5 V
50
I_O = 60 mA
I_O = 45 mA
40
30
I_O = 30 mA
-1
-2
-3
-40 -20
V_CC = 3.3 V
V_CC = 5 V
0
20
40
60
Ambient Temperature (°C)
Figure 18.
80 100
G004
20
10
0
0
I_O = 2 mA
I_O = 10 mA
16 32 48 64 80 96 112 128
DC Data (Decimal)
G005
Figure 19.
GLOBAL BRIGHTNESS CONTROL LINEARITY
70
V_CC = 3.3 V
60
V_CC = 5 V
I_O = 60 mA
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 20.
SUPPLY CURRENT vs OUTPUT CURRENT
25
V_CC = 3.3 V
20
V_CC = 5 V
15
10
5
0
0
T_A = +25°C
BC and DC = 7Fh
2 ´ SIN = SCLK = 33 MHz
GSCLK = 33 MHz
All Outputs On
10
20
30
40
50
60
Output Current (mA)
G007
Figure 21.
SUPPLY CURRENT vs AMBIENT TEMPERATURE
25
20
15
10
5
0
-40
V_CC = 3.3 V
V_CC = 5 V
R_IREF = 1.13 kW
BC and DC = 7Fh
2 ´ SIN = SCLK = 33 MHz
GSCLK = 33 MHz
All Outputs On
-20
0
20
40
60
80 100
Ambient Temperature (°C)
G008
Figure 22.
SUPPLY CURRENT IN POWER-SAVE MODE vs AMBIENT
TEMPERATURE
16
14
12
10
8
6
4
2
0
-40
V_CC = 3.3 V
V_CC = 5 V
R_IREF = 1.13 kW
BC and DC = 7Fh
SIN = SCLK = Low
GSCLK = Low
Power-Save Mode
-20
0
20
40
60
80 100
Ambient Temperature (°C)
G009
Figure 23.
16
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