LT3420/LT3420-1
TYPICAL PERFOR A CE CHARACTERISTICS
Graphs apply to both the LT3420 and LT34201-1 unless otherwise noted.
Efficiency for Figure 2 Circuit,
LT3420-1
90
T
A
= 25°C
AVERAGE INPUT CURRENT (mA)
80
V
IN
= 5V
V
IN
= 3.3V
900
AVERAGE INPUT CURRENT (mA)
EFFICIENCY (%)
70
60
50
V
CC
= V
BAT
= V
IN
100
150
250
200
V
OUT
(V)
300
350
3420 G13
40
50
Quiescent Current in Refresh Mode
140
T
A
= 25°C
QUIESCENT CURRENT (µA)
V
BAT
PIN VOLTAGE (V)
V
CC
PIN VOLTAGE (V)
120
100
80
60
2.5
4.0
5.5
7.0
V
CC
(V)
3420 G16
U W
8.5
10
Input Current, LT3420
1000
FIGURE 1 CIRCUIT
V
CC
= V
BAT
= 3.3V
T
A
= 25°C
600
550
500
450
400
350
300
Input Current, LT3420-1
FIGURE 2 CIRCUIT
V
CC
= V
BAT
= 3.3V
T
A
= 25°C
800
700
600
500
50
100
150
250
200
V
OUT
(V)
300
350
3420 G14
50
100
150
200
250
V
OUT
(V)
300
350
3420 G15
V
CC
Minimum Operating Voltage
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
–50 –25
0
25
50
75
100
125
V
–
V
+
ENABLE VOLTAGE
IS HYSTERETIC
2.0
V
BAT
Minimum Operating Voltage
ENABLE VOLTAGE
IS HYSTERETIC
V
+
1.6
V
–
1.8
1.4
1.2
1.0
–50 –25
0
25
50
75
100
125
TEMPERATURE (°C)
3420 G17
TEMPERATURE (°C)
3420 G18
3420fa
5
LINER [ LINEAR TECHNOLOGY ]
