Datasheet

0
50
100
150
200
250
300
350
400
450
500
5 9 13 17 21 25
V =2.5V
O
V =1.05V
O
I =2 A,
PWMMode
O
f
sw
-SwitchingFrequency-kHz
V -InputVoltage-V
I
0
100
200
300
400
500
600
700
800
100 200 300 400 500 600 700
V =1.05V
O
V =2.5V
O
V =15V,
PWMMode
I
f
sw
-SwitchingFrequency-kHz
R -TONResistance-k
TON
W
0
50
100
150
200
250
300
350
400
450
0.001
0.010
0.1 1 10
f -SwitchingFrequency-kHz
sw
PWMOnly
AutoSkip
I -OutputCurrent- A
O
0
50
100
150
200
250
300
350
400
450
0.001 0.010 0.100 1.000 10.000
f -SwitchingFrequency-kHz
sw
PWMOnly
AutoSkip
I -OutputCurrent- A
O
TPS51117
www.ti.com ...................................................................................................................................... SLVS631B –DECEMBER 2005–REVISED SEPTEMBER 2009
TYPICAL CHARACTERISTICS (continued)
MEASURED SWITCHING FREQUENCY SWITCHING FREQUENCY
vs vs
TON RESISTANCE INPUT VOLTAGE
Figure 7. Figure 8.
SWITCHING FREQUENCY SWITCHING FREQUENCY
vs vs
OUTPUT CURRENT (1.05 V) OUTPUT CURRENT (2.5 V)
Figure 9. Figure 10.
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