TLC5929 Datasheet, PDF (14/36 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with 7-Bit Global Brightness Control, Power-Save Mode

TLC5929
SBVS159 – APRIL 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, unless otherwise noted.
CONSTANT-CURRENT ERROR
vs AMBIENT TEMPERATURE (Channel-to-Channel)
GLOBAL BRIGHTNESS
CONTROL LINEARITY
3
60
2
R_IREF = 1.6 kW
V_OUTn = 0.8 V
V_CC = 3.3 V
50
V_CC = 5 V
I_O = 2 mA
I_O = 5 mA
1
40
I_O = 10 mA
0
30
I_O = 20 mA
I_O = 40 mA
-1
20
I_O = 50 mA
-2
-3
-40 -20
V_CC = 3.3 V
V_CC = 5 V
0
20
40
60
Temperature (°C)
80 100
10
0
0 16 32 48 64 80 96 112 128
BC Data (Decimal)
Figure 14.
Figure 15.
SUPPLY CURRENT
vs OUTPUT CURRENT SET BY R_IREF
16
BC = 7Fh
14 ^RIREF ^{= 1.6 kW}
SIN = 17.5 MHz
12 _{SCLK = 35 MHz}
All Outputs On
10
8
6
4
2
V_CC = 3.3 V
V_CC = 5 V
0
0
10
20
30
40
50
Output Current (mA)
Figure 16.
SUPPLY CURRENT
vs AMBIENT TEMPERATURE
14
12
10
8
6
BC = 7Fh
4 R_IREF = 1.6 kW
SIN = 17.5 MHz
2 _{SCLK = 35 MHz}
All Outputs On
0
-40 -20
0
20
40
60
Ambient Temperature (°C)
V_CC = 3.3 V
V_CC = 5 V
80 100
Figure 17.
SUPPLY CURRENT IN POWER-SAVE MODE
vs AMBIENT TEMPERATURE
30
BC = 7Fh
R_IREF = 1.6 kW
25
SIN = SCLK = Low
Power-Save Mode
20
15
10
5
0
-40 -20
V_CC = 3.3 V
V_CC = 5 V
0
20
40
60
Ambient Temperature (°C)
Figure 18.
80 100
CH1 (5 V/div)
CH2 (2 V/div)
CH3 (2 V/div)
CONSTANT-CURRENT OUTPUT
VOLTAGE WAVEFORM
CH1-BLANK
CH2-OUT0
CH3-OUT1
CH4 (2 V/div)
V_CC = 3.3 V
BC = 7Fh
R_IREF = 1.6 kW
CH4-OUT15
Time (20ns/div)
V_LED = 5 V
R_L = 100W
C_L = 15pF
Figure 19.
14
Submit Documentation Feedback
Product Folder Link(s): TLC5929
Copyright © 2011, Texas Instruments Incorporated