Datasheet

0
20
40
60
80
100
0.001 0.01 0.1
I -OutputCurrent- A
O
Efficiency-%
V =3.3V
O
V =2.5V
O
V =1.8V
O
500
600
700
800
900
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 =1.05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
I -OutputCurrent- A
O
f -SwitchingFrequency-kHz
sw
V =2.5V
O
V =1.8V
O
TPS54226
www.ti.com SLVSA14E –OCTOBER 2009–REVISED JULY 2011
TYPICAL CHARACTERISTICS (continued)
Figure 9. LIGHT LOAD EFFICIENCY Figure 10. SWITCHING FREQUENCY vs INPUT VOLTAGE
(I
O
=1 A)
vs OUTPUT CURRENT
Figure 11. SWITCHING FREQUENCY vs OUTPUT Figure 12. VOLTAGE RIPPLE AT OUTPUT (IO=2A)
CURRENT
Copyright © 2009–2011, Texas Instruments Incorporated 11
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