LTC4442-1 datasheet(5/12 Pages) LINER

Part #	LTC4442-1

Description	High Speed Synchronous N-Channel MOSFET Drivers

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC4442/LTC4442-1

5

4442fa

TYPICAL PERFORMANCE CHARACTERISTICS

Undervoltage Lockout Threshold

Hysteresis vs Temperature

Switching Supply Current vs

Input Frequency

Propagation Delay vs VLOGIC

Supply Voltage

Output High Voltage vs

VCC Supply Voltage

Rise and Fall Time vs

VCC Supply Voltage

TEMPERATURE (°C)

600

800

1000

4442 G10

400

200

500

700

900

300

100

0

–10

–40

110

20

50

80

LTC4442-1

VCC UVLO

LTC4442

VCC UVLO

VLOGIC UVLO

FREQUENCY (Hz)

0

2

3

800k

4442 G11

1

0

200k

400k

600k

1M

4

IVCC

IBOOST

IVLOGIC

NO LOAD

VLOGIC = 5V

VCC = BOOST-TS = 7V

Switching Supply Current vs

Load Capacitance

LOAD CAPACITANCE (nF)

0.1

0.3

3

0

1

10

100

110

30

4442 G12

VLOGIC = 5V

VCC = BOOST-TS = 7V

ICC OR IBOOST

fIN = 500kHz

ICC OR IBOOST

fIN = 100kHz

ILOGIC

fIN = 500kHz

VLOGIC SUPPLY VOLTAGE (V)

3

35

6

4442 G13

20

10

45

7

5

0

40

30

25

15

89

10

NO LOAD

VCC = BOOST-TS = 7V

tPLH(TG)

tPHL(TG)

tPLH(BG)

tPHL(BG)

Propagation Delay vs

VCC Supply Voltage

VCC SUPPLY VOLTAGE (V)

4

35

30

25

20

15

10

5

0

79

4442 G14

56

810

NO LOAD

VLOGIC = 5V

BOOST-TS = VCC

tPLH(TG)

tPHL(TG)

tPLH(BG)

tPHL(BG)

Propagation Delay vs Temperature

TEMPERATURE (°C)

25

30

35

4442 G15

15

0

–40

–10

20

50

80

110

40

20

10

5

NO LOAD

VLOGIC = 5V

VCC = BOOST-TS = 7V

tPLH(TG)

tPHL(BG)

tPHL(TG)

tPLH(BG)

VCC SUPPLY VOLTAGE (V)

4

0

2

4

6

5

6

78

4442 G16

9

8

10

1

3

5

7

9

10

BOOST-TS = VCC

–100mA

–1mA

–10mA

VCC SUPPLY VOLTAGE (V)

4

0

5

10

15

20

56

7

tr(BG)

8

4442 G17

910

tr(TG)

tf(TG)

tf(BG)

CLOAD = 3.3nF

BOOST-TS = VCC

Rise and Fall Time vs

Load Capacitance

LOAD CAPACITANCE (nF)

13

1

10

100

10

30

4442 G18

VCC = BOOST-TS = 7V

tr(BG)

tr(TG)

tf(TG)

tf(BG)

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LTC4442-1 Datasheet(PDF) 5 Page - Linear Technology

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