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SLVS413F – OCTOBER 2002 – REVISED DECEMBER 2010
EFFICIENCY
vs
LOAD CURRENT
90
88
86
84
Efficiency − %
82
80
78
76
74
72
70
0.1
V
O
= 18 V
L = 10
µH
L = 3.3
µH
EFFICIENCY
vs
INPUT VOLTAGE
90
88
86
84
Efficiency − %
82
80
78
76
74
72
70
L = 10
µH
V
O
= 18 V
I
O
= 10 mA
I
O
= 5 mA
1
10
I
L
− Load Current − mA
100
1
2
3
4
5
6
V
I
− Input Voltage − V
Figure 3.
TPS61040
QUIESCENT CURRENT
vs
INPUT VOLTAGE
40
35
30
25
T
A
= −40°C
20
15
10
5
0
1.8
2.4
3
3.6
4.2
4.8
5.4
6
T
A
= 85°C
Figure 4.
FEEDBACK VOLTAGE
vs
FREE-AIR TEMPERATURE
1.24
1.238
Quiescent Current −
µA
T
A
= 27°C
V
FB
− Feedback Voltage − V
1.236
V
CC
= 2.4 V
1.234
1.232
1.23
−40
−20
0
V
I
− Input Voltage − V
20
40
60
80
T
A
− Temperature −
°C
100
120
Figure 5.
Figure 6.
Copyright © 2002–2010, Texas Instruments Incorporated
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