LTC4440 datasheet(4/12 Pages) LINER

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LTC4440

4440i

Output High Voltage (VOH)

vs Supply Voltage

BOOST – TS SUPPLY VOLTAGE (V)

4440 G04

910

ITG = –100mA

ITG = –1mA

ITG = –10mA

TA = 25°C

Input Thresholds (INP)

vs Supply Voltage

VCC SUPPLY VOLTAGE (V)

0.8

1.0

1.2

1.4

1.6

1.8

2.0

911

4440 G05

VIL

(INPUT LOW THRESHOLD)

VIH

(INPUT HIGH THRESHOLD)

TA = 25°C

VCC Supply Current

at TTL Input Levels

2MHz Operation

VCC SUPPLY VOLTAGE (V)

300

320

340

4440 G06

280

260

200

240

220

380

INP = 2V

INP = 0.8V

360

TA = 25°C

INPUT

(INP)

5V/DIV

OUTPUT

(TG)

5V/DIV

VCC = 12V

250ns/DIV

4440 G07

TYPICAL PERFOR A CE CHARACTERISTICS

VCC Supply Current (VCC = 12V)

vs Temperature

TEMPERATURE (

°C)

–60

200

250

300

120

4440 G08

150

100

–30

060

INP = 0V

INP = 12V

VCC Undervoltage Lockout

Thresholds vs Temperature

TEMPERATURE (

°C)

–60

6.45

6.40

6.35

6.30

6.25

6.20

6.15

6.10

120

4440 G09

6.05

–30

060

FALLING THRESHOLD

RISING THRESHOLD

Boost Supply Current

vs Temperature

Boost Supply (BOOST – TS)

Undervoltage Lockout Thresholds

vs Temperature

Input Threshold vs Temperature

TEMPERATURE (

°C)

–60

500

400

450

350

300

250

200

150

100

120

4440 G10

–30

060

INP = 0V

INP = 12V

TEMPERATURE (

°C)

–60

7.6

7.5

7.4

7.3

7.2

7.1

7.0

6.9

6.8

120

4440 G11

6.7

–30

060

FALLING THRESHOLD

RISING THRESHOLD

TEMPERATURE (

°C)

–60

1.6

1.8

2.0

120

4440 G12

1.4

1.2

0.8

–30

060

1.0

VIH (VCC = 15V)

VIL (VCC = 15V)

VIH (VCC = 8V)

VIL (VCC = 8V)

VIH (VCC = 12V)

VIL (VCC = 12V)

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