LTC1473 查看數據表（PDF） - Linear Technology

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LTC1473

Dual PowerPath Switch Driver

Linear Technology 

LTC1473

TYPICAL PERFORMANCE CHARACTERISTICS

Turn-Off Delay and Gate Fall Time

vs Temperature

2.2 V + = 20V

2.0 CLOAD = 1000pF

VSAB = 20V

1.8

1.6

GATE FALL

TIME

1.4

1.2

TURN-OFF

DELAY

1.0

0.8

0.6

0.4

– 50 – 25

0 25 50 75

TEMPERATURE (°C)

100 125

1473 G07

Turn-On Delay and Gate Rise Time

vs Temperature

45 V + = 20V

40 CLOAD = 1000pF

VSAB = 0V

35

GATE RISE

TIME

30

25

TURN-ON

DELAY

20

15

10

5

0

– 50 – 25

0 25 50 75

TEMPERATURE (°C)

100 125

1473 G06

Rise and Fall Time

vs Gate Capacitive Loading

40

35

RISE TIME

30

VSAB = 0V

25

20

15

10

5

0

10

FALL TIME

VSAB = 20V

100

1000

10000

GATE CAPACITIVE LOADING (pF)

1473 G08

Logic Input Threshold Voltage

vs Temperature

1.9 V + = 5V

1.8

1.7

1.6

1.5

VHIGH

1.4

1.3

VLOW

1.2

1.1

1.0

– 50 – 25

0 25 50 75

TEMPERATURE (°C)

100 125

1473 G10

Logic Input Threshold Voltage

vs Temperature

1.9 V + = 20V

1.8

1.7

VHIGH

1.6

1.5

VLOW

1.4

1.3

1.2

1.1

1.0

– 50 – 25

0 25 50 75

TEMPERATURE (°C)

100 125

1473 G11

Timer Latch Threshold Voltage

vs Temperature

1.28 V + = 20V

1.26

1.24

1.22

1.20

1.18

1.16

1.14

1.12

1.10

– 50 – 25

0 25 50 75

TEMPERATURE (°C)

100 125

1473 G12

Timer Source Current

vs Temperature

8.5 V + = 20V

8.0 TIMER = 0V

7.5

7.0

6.5

6.0

5.5

5.0

4.5

4.0

– 50 – 25

0 25 50 75

TEMPERATURE (°C)

100 125

1473 G13

Sense Pin Source Current

IBSENSE vs VSENSE

175

V+ = 20V

150

VDIODE = VIN1 = 5V

VIN2 = 0V

125

VSENSE+ – VSENSE– = 0V

100

75

50

25

0

–25

0 2.5 5 7.5 10 12.5 15 17.5 20

VSENSE (V)

1473 • TPC14

4

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