LT3481EMSE datasheet(5/24 Pages) LINER

Part #	LT3481EMSE

Description	36V, 2A, 2.8MHz Step-Down Switching Regulator with 50關A Quiescent Current

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3481

5

3481fb

BOOST DIODE CURRENT (A)

0

0.8

1.0

1.2

2.0

3481 G18

0.6

0.4

0

0.5

1.0

1.5

0.2

1.6

1.4

RUN/SS PIN VOLTAGE (V)

0

8

10

12

15

25

3481 G17

6

4

510

20

30

35

2

0

Switch Voltage Drop

Boost Pin Current

Feedback Voltage

Switching Frequency

Frequency Foldback

Minimum Switch On-Time

Soft Start

RUN/SS Pin Current

Boost Diode

SWITCH CURRENT (mA)

0

400

500

700

1500

2500

3481 G10

300

200

500

1000

2000

3000 3500

100

0

600

SWITCH CURRENT (mA)

0

10

30

40

50

2000

90

3481 G11

20

1000

500

2500 3000

1500

3500

60

70

80

TEMPERATURE (°C)

–50

1.270

1.280

125 150

4381 G12

1.260

1.250

0

50

100

–25

25

75

1.290

1.265

1.275

1.255

1.285

TEMPERATURE (°C)

–50

1.00

1.10

125 150

4381 G13

0.90

0.80

0

50

100

–25

25

75

1.20

RT = 45.3k

0.95

1.05

0.85

1.15

FB PIN VOLTAGE (mV)

0

800

1000

1200

600

1000

3481 G14

600

400

200

400

800

1200 1400

200

0

RT = 45.3k

TEMPERATURE (˚C)

–50

80

100

120

25

3481 G15

60

40

–25

0

50

75

100

150

125

20

0

140

RUN/SS PIN VOLTAGE (V)

0

3.5

1.5

3481 G16

2.0

1.0

0.5

1

2

0.5

0

4.0

3.0

2.5

1.5

2.5

3

3.5

TYPICAL PERFORMANCE CHARACTERISTICS

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LT3481EMSE Datasheet(PDF) 5 Page - Linear Technology

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