TLC5949 Datasheet, PDF (17/51 Pages) Texas Instruments – 16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC LED Lamp

TLC5949
www.ti.com
SBVS219A – DECEMBER 2012 – REVISED DECEMBER 2012
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, unless otherwise noted.
25
25
20
20
15
15
10
T_A = +25°C
BC = 7Fh
5
2 ´ SIN = SCLK = 33 MHz
GSCLK = 33 MHz
All Outputs On
0
0
10
20
30
40
50
60
Output Current (mA)
G007
Figure 18. SUPPLY CURRENT vs OUTPUT CURRENT
16
R_IREF = 1.13 kW
14 BC = 7Fh
SIN = SCLK = Low
12 GSCLK = Low
Power-Save Mode
10
8
6
4
2
0
-40 -20
0
20
40
60
80 100
Ambient Temperature (°C)
G009
Figure 20. SUPPLY CURRENT IN POWER-SAVE MODE
vs AMBIENT TEMPERATURE
10
R_IREF = 1.13 kW
BC = 7Fh
5
2 ´ SIN = SCLK = 33 MHz
GSCLK = 33 MHz
All Outputs On
0
-40 -20
0
20
40
60
80 100
Ambient Temperature (°C)
G008
Figure 19. SUPPLY CURRENT vs AMBIENT TEMPERATURE
Ch 1 (5 V/div)
Channel 1
GSCLK
Ch 2 (2 V/div)
Channel 2
OUT0
Ch 3 (2 V/div)
Ch 4 (2 V/div)
R_IREF = 0.85 kW
V_CC = 3.3 V
V_LED = 5 V
BC = 7Fh, GS = 001h
R_L = 68 W, C_L = 15 pF
GSCLK = 33 MHz
Channel 3
OUT1
Channel 4
OUT4
Time (20 ns/div)
G010
Figure 21. CONSTANT-CURRENT OUTPUT
VOLTAGE WAVEFORM
Copyright © 2012, Texas Instruments Incorporated
Product Folder Links: TLC5949
Submit Documentation Feedback
17