LTC1154 查看數據表（PDF） - Linear Technology
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LTC1154 Datasheet PDF : 18 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC1154
Standby Supply Current
50
45
VIN = 0V
VEN = 0V
40
35
30
25
20
15
VS = 18V
10
5
0
–50 –25
VS = 5V
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1154 • TPC10
Supply Current ON
1000
900
800
VIN = 5V
VEN = 0V
700
600
500
400
300
VS = 12V
200
100
VS = 5V
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1154 • TPC11
Input ON Threshold Voltage
2.4
2.2
2.0
1.8
1.6
1.4
VS = 5V
1.2
1.0
VS = 18V
0.8
0.6
0.4
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1154 • TPC12
Shutdown Threshold Voltage
2.4
2.2
2.0
1.8
1.6
1.4
VS = 5V
1.2
1.0
VS = 18V
0.8
0.6
0.4
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1154 • TPC13
ENABLE Threshold Voltage
5.0
4.5 VS = 12V
4.0
3.5
3.0
DISABLE
2.5
2.0
1.5
1.0
0.5
0
–50 –25
ENABLE
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1154 • TPC14
Gate Drive Current
1000
TA = 25°C
100
VS = 18V
VS = 12V
10
1
VS = 5V
0.1
0
4
8
12
16
20
GATE VOLTAGE ABOVE SUPPLY (V)
LTC1154 • TPC15
PIN FUNCTIONS
Input and Shutdown Pins
The LTC1154 input pin is active high and activates all of the
protection and charge pump circuitry when switched ON.
The shutdown pin is designed to immediately disable the
switch if a secondary fault condition (over temperature,
etc.) is detected. The LTC1154 logic and shutdown inputs
are high impedance CMOS gates with ESD protection
diodes to ground and supply and therefore should not be
forced beyond the power supply rails. The shutdown pin
should be connected to ground when not in use.
ENABLE Input Pin
The ENABLE input can be used to enable a number of
LTC1154 high side switches in banks or to provide a sec-
ondary means of control. It can also act as an inverting
input. The ENABLE input is a high impedance CMOS gate
with ESD clamp diodes to ground and supply and therefore
should not be forced beyond the power supply rails. This
pin should be grounded when not in use.
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