Datasheet

0
5
10
15
20
25
30
35
40
45
50
2.5 2.8 3.1 3.4 3.7 4.6 4.9 5.2 5.5
V -InputVoltage-V
I
I -QuiescentCurrent- A
Q
m
T =85°C
A
T =25°C
A
T =-40°C
A
4.34.0
0
20
40
60
80
100
120
140
160
180
200
220
240
260
2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 5.5
V -InputVoltage-V
I
V =1.2V
O
AlwaysPWM
AlwaysPFM
PFMtoPWM
ModeChange
PWMtoPFM
ModeChange
I -LoadCurrent-mA
O
4.9 5.2
TheSwitchingMode
ChangesatTheseBorders
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
V -InputVoltage-V
I
f -SwitchingFrequency-MHz
s
I =0mA
O
I =600mA
O
I =500mA
O
I =400mA
O
I =300mA
O
I =150mA
O
I =50mA
O
V =1.8V(TPS62660)
O
125
150
175
200
225
250
275
300
325
350
375
400
425
450
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
V -InputVoltage-V
I
r -StaticDrain-SourceOn-Resistance-m
DS(on)
W
TPS62660
PWMModeOperation
T =85°C
A
T =25°C
A
T =-40°C
A
TPS62660, TPS62665
www.ti.com SLVS871C –FEBRUARY 2010– REVISED JULY 2011
TYPICAL CHARACTERISTICS (continued)
QUIESCENT CURRENT
vs
PFM/PWM BOUNDARIES INPUT VOLTAGE
Figure 29. Figure 30.
SWITCHING FREQUENCY P-CHANNEL r
DS(ON)
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 31. Figure 32.
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