LT3581IMSE-TRPBF 查看數據表（PDF） - Linear Technology

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LT3581IMSE-TRPBF

3.3A Boost/Inverting DC/DC Converter with Fault Protection

Linear Technology 

LT3581

TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.

Gate Current vs SS Voltage

1000

900

800

700

600

500

400

300

200

100

0

0 0.25 0.50 0.75 1.00 1.25 1.50

SS VOLTAGE (V)

3581 G10

Commanded Current Limit vs

SS Voltage

5

4

3

2

1

0

0 0.2 0.4 0.6 0.8 1.0 1.2

SS VOLTAGE (V)

3580 G11

SHDN Voltage Threshold with

Hysteresis

1.40

1.38

1.36

SHDN RISING

1.34

1.32

1.30

SHDN FALLING

1.28

1.26

1.24

1.22

1.20

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3581 G12

SHDN Pin Current

32

28

25°C

24

20

16

12

8

125°C

4

–40°C

0

0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

SHDN VOLTAGE (V)

3581 G13

CLKOUT Rise Time at 1MHz

50

45

40

CLKOUT RISE TIME

35

30

25

20

15

CLKOUT FALL TIME

10

5

0

0

50 100 150 200 250

CLKOUT CAPACITIVE LOAD (pF)

3581 G16

6

SHDN Pin Current

250

–40°C

200

25°C

150

125°C

100

50

0

0 5 10 15 20 25 30 35 40

SHDN VOLTAGE (V)

3581 G14

VIN OVLO

30

28

26

24

22

20

18

16

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3581 G17

For more information www.linear.com/LT3581

Internal UVLO

2.40

2.38

2.36

2.34

2.32

2.30

2.28

2.26

2.24

2.22

2.20

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3581 G15

FAULT Input Voltage Threshold

with Hysteresis

1.25

FAULT RISING

1.00

0.75

FAULT FALLING

0.50

0.25

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

3581 G18

3581fb

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