TLC5955 Datasheet, PDF (11/53 Pages) Texas Instruments – TLC5955 48-Channel, 16-Bit, PWM LED Driver with DC, BC, LED Open-Short Detection, and Internal Current Setting

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Typical Characteristics (continued)
At T_A = +25°C and V_CC = 5.0 V, unless otherwise noted.
35
MCX = 0
MCX = 1
30
MCX = 2
MCX = 3
25
MCX = 4
MCX = 5
20
MCX = 6
MCX = 7
15
10
5
0
0 16 32 48 64 80 96 112 128
DC Data (Decimal)
C007
BCX = 7Fh
V_OUTXn = 0.8 V
Figure 7. Dot Correction (DC) Linearity
40
35
30
25
20
15
10
5
0
0
5
BCX = DCXn = 7Fh
GSCLK = 33 MHz
VCC = 3.3 V
VCC = 5 V
10
15
20
25
30
35
Output Current (mA)
SIN = 12.5 MHz
C009
SCLK = 25 MHz
V_OUT = 0.8 V
GSXn = FFFFh
Figure 9. Supply Current vs Output Current
TLC5955
SBVS237 – MARCH 2014
35
MCX = 0
MCX = 1
30
MCX = 2
MCX = 3
25
MCX = 4
MCX = 5
20
MCX = 6
MCX = 7
15
10
5
0
0 16 32 48 64 80 96 112 128
BC Data (Decimal)
C008
DCXn = 7Fh
V_OUTXn = 0.8 V
Figure 8. Global Brightness Control (BC) Linearity
40
35
30
25
20
15
10
5
0
±40 ±20
MCX = 4
SCLK = 25 MHz
GSXn = FFFFh
VCC = 3.3 V
VCC = 5 V
0
20
40
60
80 100
Ambient Temperature (ƒC)
C010
BCX = DCXn = 7Fh
SIN = 12.5 MHz
GSCLK = 33 MHz
V_OUT = 0.8 V
Figure 10. Supply Current vs Ambient Temperature
Ch1: GSCLK (5 V/div)
Ch2: OUTR4 (2 V/div)
Ch3: OUTGO (2 V/div)
Ch4: OUTB5 (2 V/div)
MCX = 7
V_LED = 4.5 V
Time (20 ns/div)
BCX = DCXn = 7Fh GSCLK = 33 MHz
R_L = 120 Ω
GSXn = 0001h
Figure 11. Constant-Current Output Voltage Waveform
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