LTC1981/LTC1982

4

TYPICAL PERFOR A CE CHARACTERISTICS

SUPPLY VOLTAGE (V)

2.0

1982 G06

1.5

2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

400

350

300

250

200

150

100

50

0

SUPPLY VOLTAGE (V)

2.0

1982 G07

1.5

2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

40

35

30

25

20

15

10

5

0

TEMPERATURE (

°C)

–60

7.50

7.45

7.40

7.35

7.30

7.25

7.20

7.15

7.10

7.05

7.00

–20

20

40

1982 G08

–40

0

60

80

100

Turn-Off Time (LTC1982)

Turn-On Time (LTC1982)

GATE Drive Voltage vs

Temperature

Turn-On Time (LTC1981)

GATE Drive Current (LTC1981)

Turn-Off Time (LTC1981)

GATE DRIVE VOLTAGE (V)

01

100

10

1

0.1

23

4

5

6

7

8

1981/82 G09

SUPPLY VOLTAGE (V)

1.5

2.5

3.5 4.0

6.0

1981/82 G10

2.0

3.0

4.5 5.0 5.5

300

250

200

150

100

50

0

SUPPLY VOLTAGE (V)

1.5

0

5

15

20

25

2.5

3.5 4.0

6.0

1981/82 G11

10

2.0

3.0

4.5 5.0 5.5

LTC1981:

GDR (Pin 1): Gate Drive Ready Active High Open Drain

Output. Used to indicate when the gate drive output is

greater than 90% of its final value.

GND (Pin 2): Ground.

SHDN (Pin 3): SHDN Active Low Input. Used to shut down

the part and force the GATE output pin to ground.

GATE (Pin 4): Gate Drive Output to an External High Side

Switch. Fully enhanced by internal charge pump. Con-

trolled by the SHDN input pin. Output voltage on this pin

less.

5.5V.

LTC1982:

SHDN 1 (Pin 1): SHDN 1 Active Low Input. Used to shut

down the GATE 1 charge pump and force the GATE 1

output pin to ground.

GND (Pin 2): Ground.

SHDN 2 (Pin 3): SHDN 2 Active Low Input. Used to shut

down the GATE 2 charge pump and force the GATE 2

output pin to ground.