Datasheet

LT3420/LT3420-1
5
3420fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Efficiency for Figure 2 Circuit,
LT3420-1 Input Current, LT3420
V
CC
Minimum Operating VoltageQuiescent Current in Refresh Mode V
BAT
Minimum Operating Voltage
Input Current, LT3420-1
EFFICIENCY (%)
3420 G13
90
80
70
60
50
40
V
OUT
(V)
100 200 300
50 150 350250
V
CC
= V
BAT
= V
IN
V
IN
= 3.3V
V
IN
= 5V
T
A
= 25°C
AVERAGE INPUT CURRENT (mA)
3420 G14
1000
900
800
700
600
500
V
OUT
(V)
100 200 300
50 150 350250
FIGURE 1 CIRCUIT
V
CC
= V
BAT
= 3.3V
T
A
= 25°C
V
OUT
(V)
50
300
AVERAGE INPUT CURRENT (mA)
350
400
450
500
600
100
150 200 250
3420 G15
300 350
550
FIGURE 2 CIRCUIT
V
CC
= V
BAT
= 3.3V
T
A
= 25°C
V
CC
(V)
2.5
QUIESCENT CURRENT (µA)
10
3420 G16
5.5 8.5
140
120
100
80
60
4.0 7.0
T
A
= 25°C
TEMPERATURE (°C)
–50
V
CC
PIN VOLTAGE (V)
100
3420 G17
050
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
–25 25 75 125
V
+
V
–
ENABLE VOLTAGE
IS HYSTERETIC
TEMPERATURE (°C)
–50
V
BAT
PIN VOLTAGE (V)
100
3420 G18
050–25 25 75 125
2.0
1.8
1.6
1.4
1.2
1.0
V
+
V
–
ENABLE VOLTAGE
IS HYSTERETIC
Graphs apply to both the LT3420 and LT3420-1 unless otherwise noted.