Datasheet

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20
40
60
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120
140
0 10 20 30 40 50 60 70 80 90 100
PWM Dimming Duty Cycle - %
I - Output Current - mA
O
TPS61181A,
ISET = 20 A,
Dimming Frequency = 1 kHz
m
0
20
40
60
80
100
120
140
I - Output Current - mA
O
0 10 20 30 40 50 60 70 80 90 100
PWM Dimming Duty Cycle - %
TPS61181A,
ISET = 20 A,
Dimming Frequency = 200 Hz
m
50
100
150
200
250
300
350
5 7.5 10 12.5 15 17.5 20
Output Ripple Peak to Peak - mV
L = 4.7 Hm
V - V
BAT
V = 28.6 V - TPS61181A,
ISET = 20 A,
Dimming Frequency = 200 Hz,
Dimming Duty = 50%
O
m
L = 10 Hm
TPS61181A
SLVSAN6A –FEBRUARY 2011– REVISED MARCH 2011 www.ti.com
PWM DIMMING linearity 1kHz PWM DIMMING LINEARITY 200Hz
Figure 7. Figure 8.
PWM DIMMING OUTPUT RIPPLE C
O
=4.7μF
vs
INPUT VOLTAGE
Figure 9.
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Product Folder Link(s): TPS61181A