Datasheet

0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
0.1 1 10 100 1000
I -LoadCurrent-mA
O
V =2.7V
PFM/PWMOperation
I
V =3.6V
PFM/PWMOperation
I
V =4.2V
PFM/PWMOperation
I
V =3.6V
ForcedPWMOperation
I
V =1.8V(TPS62661)
L =muRataLQM2MPN1R0NG0
O
0.1 1 10 100 1000
I -LoadCurrent-mA
O
V =1.8V(TPS62660)
O
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
V =3.6V
PFM/PWMOperation
I
V =4.2V
PFM/PWMOperation
I
V =3.6V
ForcedPWMOperation
I
V =2.7V
PFM/PWMOperation
I
TPS62660, TPS62665
SLVS871C –FEBRUARY 2010– REVISED JULY 2011 www.ti.com
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
vs Load current 3, 4, 5, 6
η Efficiency
vs Input voltage 7
Peak-to-peak output ripple current vs Load current 8, 9
Combined line/load transient
10, 11
response
12, 13, 14, 15, 16,
Load transient response
17, 18, 19, 20, 21, 22
AC load transient response 23, 24, 25
V
O
DC output voltage vs Load current 26, 27
PFM/PWM boundaries 28, 29
I
Q
No load quiescent current vs Input voltage 30
f
s
Switching frequency vs Input voltage 31
P-channel MOSFET r
DS(on)
vs Input voltage 32
r
DS(on)
N-channel MOSFET r
DS(on)
vs Input voltage 33
PWM operation 34
Power-save mode operation 35
Mode change response 36, 37
Over-current fault operation 38
Start-up 39, 40
EFFICIENCY EFFICIENCY
vs vs
LOAD CURRENT LOAD CURRENT
Figure 3. Figure 4.
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