LTC3778 查看數據表（PDF） - Linear Technology
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LTC3778 Datasheet PDF : 24 Pages
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LTC3778
TYPICAL PERFOR A CE CHARACTERISTICS
Input and Shutdown Currents
vs Input Voltage
1200
60
EXTVCC OPEN
1000
50
800
40
SHUTDOWN
600
30
400
20
INTVCC Load Regulation
0
–0.1
–0.2
–0.3
EXTVCC Switch Resistance
vs Temperature
10
8
6
4
200
0
05
10
EXTVCC = 5V
0
10 15 20 25 30 35
INPUT VOLTAGE (V)
3778 G24
–0.4
–0.5
0
10
20
30
40
INTVCC LOAD CURRENT (mA)
50
3778 G25
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3778 G14
FCB Pin Current vs Temperature
0
RUN/SS Pin Current
vs Temperature
3
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3778 G15
RUN/SS Latchoff Thresholds
vs Temperature
5.0
2
PULL-DOWN CURRENT
1
0
PULL-UP CURRENT
–1
–2
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3778 G16
Undervoltage Lockout Threshold
vs Temperature
4.0
4.5
3.5
LATCHOFF ENABLE
4.0
3.0
6
3.5
LATCHOFF THRESHOLD
3.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3778 G17
2.5
2.0
–50 –25
0 25 50 75
TEMPERATURE (C)
100 125
3778 G18
3778f
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