LTC1154

5

1154fb

TYPICAL PERFORMANCE CHARACTERISTICS

Standby Supply Current

Supply Current ON

Input ON Threshold Voltage

Shutdown Threshold Voltage

ENABLE Threshold Voltage

Gate Drive Current

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.

TEMPERATURE (°C)

–50

0

5

15

20

25

50

35

0

50

75

LTC1154 • TPC10

10

40

45

30

–25

25

100

125

TEMPERATURE (°C)

–50

0

100

300

400

500

1000

700

050

75

LTC1154 • TPC11

200

800

900

600

–25

25

100

125

TEMPERATURE (°C)

–50

0.4

0.6

1.0

1.2

1.4

2.4

1.8

050

75

LTC1154 • TPC12

0.8

2.0

2.2

1.6

–25

25

100

125

TEMPERATURE (°C)

–50

0.4

0.6

1.0

1.2

1.4

2.4

1.8

050

75

LTC1154 • TPC13

0.8

2.0

2.2

1.6

–25

25

100

125

TEMPERATURE (°C)

–50

0

0.5

1.5

2.0

2.5

5.0

3.5

050

75

LTC1154 • TPC14

1.0

4.0

4.5

3.0

–25

25

100

125

DISABLE

ENABLE

GATE VOLTAGE ABOVE SUPPLY (V)

1

10

100

1000

0

8

12

16

0.1

4

20

LTC1154 • TPC15