Datasheet

6
LTC3778
3778f
FCB Pin Current vs Temperature
RUN/SS Pin Current
vs Temperature
RUN/SS Latchoff Thresholds
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
EXTV
CC
Switch Resistance
vs Temperature
Input and Shutdown Currents
vs Input Voltage
INTV
CC
Load Regulation
INPUT VOLTAGE (V)
0
INPUT CURRENT (µA)
SHUTDOWN CURRENT (µA)
800
1000
1200
15 25
3778 G24
600
400
510
20 30 35
200
0
30
40
60
50
20
10
0
EXTV
CC
OPEN
EXTV
CC
= 5V
SHUTDOWN
INTV
CC
LOAD CURRENT (mA)
0
∆INTV
CC
(%)
–0.2
–0.1
0
40
3778 G25
–0.3
–0.4
–0.5
10
20
30
50
TEMPERATURE (°C)
–50 –25
0
EXTV
CC
SWITCH RESISTANCE (Ω)
4
10
0
50
75
3778 G14
2
8
6
25
100
125
TEMPERATURE (°C)
–50
FCB PIN CURRENT (µA)
–0.50
–0.25
0
25 75
3778 G15
–0.75
–1.00
–25 0
50 100 125
–1.25
–1.50
TEMPERATURE (°C)
–50 –25
–2
RUN/SS PIN CURRENT (µA)
0
3
0
50
75
3778 G16
–1
2
1
25
100
125
PULL-UP CURRENT
PULL-DOWN CURRENT
TEMPERATURE (°C)
–50
3.0
RUN/SS THRESHOLD (V)
3.5
4.0
4.5
5.0
–25 0 25 50
3778 G17
75 100 125
LATCHOFF ENABLE
LATCHOFF THRESHOLD
TEMPERATURE (C)
–50
2.0
UNDERVOLTAGE LOCKOUT THRESHOLD (V)
2.5
3.0
3.5
4.0
–25 0 25 50
3778 G18
75 100 125
TYPICAL PERFOR A CE CHARACTERISTICS
UW