LTC1778EGN-1(RevA) データシートの表示（PDF） - Linear Technology
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LTC1778EGN-1 Datasheet PDF : 24 Pages
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LTC1778/LTC1778-1
TYPICAL PERFOR A CE CHARACTERISTICS
Error Amplifier gm vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G13
Input and Shutdown Currents
vs Input Voltage
1200
60
EXTVCC OPEN
1000
50
800
40
SHUTDOWN
600
30
400
20
200
10
EXTVCC = 5V
0
05
0
10 15 20 25 30 35
INPUT VOLTAGE (V)
1778 G24
EXTVCC Switch Resistance
vs Temperature
10
FCB Pin Current vs Temperature
0
INTVCC Load Regulation
0
–0.1
–0.2
–0.3
–0.4
–0.5
0
10
20
30
40
INTVCC LOAD CURRENT (mA)
50
1778 G25
RUN/SS Pin Current
vs Temperature
3
8
–0.25
–0.50
6
–0.75
4
–1.00
2
–1.25
2
PULL-DOWN CURRENT
1
0
PULL-UP CURRENT
–1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G14
–1.50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G15
–2
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1778 G16
RUN/SS Latchoff Thresholds
vs Temperature
5.0
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
1778 G17
2.5
2.0
–50 –25
0 25 50 75 100 125
TEMPERATURE (C)
1778 G18
1778fa
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