Datasheet

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TYPICAL CHARACTERISTICS
40
45
50
55
60
65
70
75
80
85
90
95
100
0 0.01 0.10 1 100010 100
Efficiency − %
I
L
− Load Current − mA
V
O
= 3.3 V
V
I
= 3.6 V
Mode = Low
V
I
= 5 V
Mode = Low
40
45
50
55
60
65
70
75
80
85
90
95
100
0 0.01 0.10 1 100010 100
Efficiency − %
I
L
− Load Current − mA
V
O
= 1.8 V
V
I
= 3.6 V
Mode = High
Mode = Low
V
I
= 5 V
V
I
= 3.6 V
V
I
= 2.7 V
TPS62020
TPS62021
TPS62026
SLVS076C – JUNE 2003 – REVISED DECEMBER 2004
Table of Graphs
FIGURE
η Efficiency vs Load current 1, 2, 3
η Efficiency vs Input voltage 4
I
Q
No load quiescent current vs Input voltage 5, 6
f
s
Switching frequency vs Input voltage 7
r
DS(on)
P-Channel switch r
DS(on)
vs Input voltage 8
r
DS(on)
N-Channel rectifier switch r
DS(on
) vs Input voltage 9
Load transient response 10
PWM operation 11
Power save mode operation 12
Start-up 13
EFFICIENCY EFFICIENCY
vs vs
LOAD CURRENT LOAD CURRENT
Figure 1. Figure 2.
6