Datasheet

0
20
40
60
80
100
0.001 0.01 0.1
I -OutputCurrent- A
O
Efficiency-%
V =1.8V
O
V =2.5V
O
V =3.3V
O
400
500
600
700
800
0 5 10 15 20
V -InputVoltage-V
I
f-SwitchingFrequency-kHz
sw
V =3.3V
O
V =1.8V
O
V (10mV/div)
O
SW(5V/div)
0
100
200
300
400
500
600
700
800
0.001 0.01 0.1 1 10
f-SwitchingFrequency-kHz
sw
I -OutputCurrent- A
O
V =1.8V
O
V =2.5V
O
VIN(50mV/div)
SW(5V/div)
TPS54426
www.ti.com SLVSAD6C –AUGUST 2010– REVISED JULY 2011
TYPICAL CHARACTERISTICS (continued)
LIGHT LOAD EFFICIENCY SWITCHING FREQUENCY
vs vs
OUTPUT CURRENT INPUT VOLTAGE (IO=1A)
Figure 9. Figure 10.
WITCHING FREQUENCY
vs
OUTPUT CURRENT VOLTAGE RIPPLE AT OUTPUT (IO=4A)
Figure 11. Figure 12.
VOLTAGE RIPPLE AT INPUT (IO=4A)
Figure 13.
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