4

LT1681

1681f

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Output Drivers

TG On Voltage

q

11

11.5

V

TG Off Voltage

q

0.1

0.5

V

TG Rise/Fall Times

10% to 90%/90% to 10%

35

ns

BG On Voltage

q

11

11.5

V

BG Off Voltage

q

0.1

0.5

V

BG Rise/Fall Times

10% to 90%/90% to 10%

35

ns

SG On Voltage

q

11

11.5

V

SG Off Voltage

q

0.1

0.5

V

SG Rise/Fall Times

10% to 90%/90% to 10%

35

ns

SG to BG Enable Lag Time

4V On/Off Thresholds

q

80

150

300

ns

TG to BG Enable Lag Time

4V On/Off Thresholds

100

ns

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: Supply current specification does not include external FET gate

charge currents. Actual supply currents will be higher and vary with

operating frequency, operating voltages and the type of external switch

elements used. See Applications Information.

Note 3: Guaranteed but not tested.

Note 4: The LT1681E is guaranteed to meet performance specifications

from 0

°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls. For guaranteed performance to

specifications over the –40

°C to 85°C range, the LT1681I is available.

TYPICAL PERFOR A CE CHARACTERISTICS

vs Temperature

TEMPERATURE (

°C)

–55

15

125

80

1681 G01

–40

0

40

20

19

18

17

16

SHDN PIN VOLTAGE (mV)

500

700

900

1100

100

0

200

300

400

1681 G02

500

SUPPLY VOLTAGE (V)

9

16

18

16

1681 G03

15

10

12

14

18

17

vs SHDN Pin Voltage