Datasheet

LTC3450
4
3450fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
EFFICIENCY (%)
100
95
90
85
80
75
70
EFFICIENCY (%)
100
95
90
85
80
75
70
V
IN
(V)
1.5 3.0 4.0
2.0 2.5
3.5 4.5 5.0
V
IN
(V)
1.5 3.0 4.0
2.0 2.5
3.5 4.5 5.0
V
IN
(V)
1.5 3.0 4.0
2.0 2.5
3.5 4.5 5.0
V
IN
(V)
1.5 3.0 4.0
2.0 2.5
3.5 4.5 5.55.0
V
IN
(V)
1.5 3.0 4.0
2.0 2.5
3.5 4.5 5.55.0
3450 G02
3450 G03
AV
DD
(V)
5.16
5.14
5.12
5.10
5.08
5.06
5.04
3450 G06
V
GH
(V)
15.6
15.4
15.2
15.0
14.8
14.6
14.4
V
IN
CURRENT (µA)
100
90
80
70
60
50
40
30
20
10
0
3450 G04
V
IN
CURRENT (µA)
3450 G05
800
700
600
500
400
300
200
100
V
GH
LOAD (µA)
0 100 300 500 700 900200 400 600 800
3450 G07
1000
V
GL
LOAD (µA)
0 100 300 500 700 900200 400 600 800 1000
V
GL
(V)
– 9.0
– 9.2
– 9.4
– 9.6
– 9.8
– 10.0
– 10.2
– 10.4
3450 G08
TEMPERATURE (°C)
–40–25
3450 G09
–10
520
35
50
65 80 95
110
125
AV
DD
(V)
5.200
5.175
5.150
5.125
5.100
5.075
5.050
5.025
5.000
10mA
2mA
0mA
2mA
10mA
2mA
5mA
5mA
5mA
10mA
L = 47µHL = 100µH
AV
DD
Efficiency vs V
IN
AV
DD
Efficiency vs V
IN
No Load V
IN
Current in Blank Mode
No Load V
IN
Current in Scan Mode
AV
DD
vs V
IN
and Load
V
GH
vs Load
V
GL
vs Load
AV
DD
vs Temperature
Figure 1 Circuit, 1mA Load
(T
A
= 25°C unless otherwise noted)