LTC2952 Ver la hoja de datos (PDF) - Linear Technology
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LTC2952 Datasheet PDF : 30 Pages
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LTC2952
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
IIN-OFF vs Input Supply Voltage at
Different Temperatures
50
130°C
90°C
40
25°C
30
20
10
0
–45°C
–60°C
V1 = VIN, V2 = 0, VS = OPEN OR
V2 = VIN, V1 = 0,VS = OPEN
M1 = OPEN, M2 = 0V
5 10 15 20 25 30
INPUT SUPPLY VOLTAGE VIN (V)
2952 G01
IIN-ON vs Input Supply Voltage at
Different Temperatures
110
V1 = VS = VIN, V2 = 0V OR
100 V2 = VS = VIN, V1 = 0V
130°C
90°C
90
80
25°C
70
–45°C
60
–60°C
50
40
0
5 10 15 20 25 30
INPUT SUPPLY VOLTAGE VIN (V)
2952 G02
V2 Preferential Threshold
vs Temperature
3.5
V1 = 28V, VS = OPEN
3.4
3.3
3.2
3.1
3.0
–50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
2952 G03
Worst Case Supply to Supply
Leakage vs Temperature
1000
V2 = VS = 0V, V1 = 28V
V1 = VS = 0V, V2 = 28V
V1 = V2 = 0V, VS = 28V
100
10
1
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
2952 G04
PB Current vs PB Voltage
20
V1 = V2 = VS = 28V
0
–20
–?40
–60
–80
–100
–120
–10 –5
0 5 10 15 20 25 30
PB VOLTAGE (V)
2952 G05
ONT/OFFT Pull-Up/Pull-Down
Current vs Temperature
2.4
2.2
2.0
1.8
1.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
2952 G06
Total Turn-On/Turn-Off Time vs
ONT/OFFT Capacitors Value
10000
1000
100
10
0.1
8
1
10
100
CONT/COFFT (nF)
1000
2952 G07
KILL, PFI, M1 and M2 Falling Input
Threshold Voltage vs Temperature
0.508
0.506
0.504
0.502
0.500
0.498
0.496
0.494
0.492
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
2952 G08
VM Input Reset Threshold Voltage
vs Temperature
0.508
0.506
0.504
0.502
0.500
0.498
0.496
0.494
0.492
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
2952 G09
2952fa
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