Datasheet

TYPICAL CHARACTERISTICS – SM1 AND SM2 BUCK CONVERTERS
0
10
20
30
40
50
60
70
80
90
100
0 0.1 0.2 0.3 0.4 0.5 0.6
I -OutputCurrent- A
O
Efficiency-%
VIN_SM1=4V,
V (SM1)=1.24V,
L =3.3 H,
C (SM1)=10 F
O
O
m
m
76
78
80
82
84
86
88
90
92
0 0.1 0.2 0.3
0.4
0.5 0.6 0.7
I -OutputCurrent- A
O
Efficiency-%
VIN_SM2=4.6V,
VO(SM2)=1.8V,
L =3.3 H.
C (SM2)=10 F
O
m
m
AC=5V,
VIN_SM2=4.6V,
V (SM2=1.8V
O
I (SM2)
L =3.3mF,
C (SM2)=10 F
O
O
m
AC=5V,
VIN_SM2=4.6V,
V (SM2=1.8V
O
I (SM2)
L =3.3mF,
C (SM2)=10 F
O
O
m
TPS65820
SLVS663B – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com
Measured with Application Circuit shown in Figure 3 , unless otherwise noted
PWM MODE
EFFICIENCY IN AUTOMATIC EFFICIENCY
PWM/PFM MODE vs OUTPUT CURRENT
Figure 14. Figure 15.
PFM OPERATION PFM LOW RIPPLE OPERATION
Figure 16. Figure 17.
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