LFDW datasheet(4/24 Pages) LINER

部品番号	LFDW

部品情報	1A Micropower Step-Down

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メーカー	LINER [Linear Technology]

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LT3682

4

3682f

TYPICAL PERFORMANCE CHARACTERISTICS

LOAD CURRENT (mA)

0.1

60

70

40

50

80

1000

3682 G01

30

10

20

1

10

100

90

VIN = 12V

VIN = 34V

VIN = 24V

L = 10μH

f = 800kHz

LOAD CURRENT (mA)

3682 G02

0.1

60

70

40

50

80

1000

30

10

20

1

10

100

90

VIN = 12V

VIN = 34V

VIN = 24V

L = 10μH

f = 800kHz

LOAD CURRENT (mA)

0.1

70

60

80

90

1000

3682 G03

20

30

40

50

10

1

10

100

0.1

0.01

0.001

1

VIN = 12V

VOUT = 3.3V

L = 10μH

f = 800kHz

INPUT VOLTAGE(V)

0

80

60

100

40

3682 G04

20

40

0

5

10

15

20

30

35

25

120

VOUT = 3.3V

TEMPERATURE(°C)

50

700

600

500

800

900

3682 G05

400

300

200

100

0

25

0

25

50

100

125

75

1000

CATCH DIODE: DIODES, INC. B150

VIN = 12V

VOUT = 3.3V

INCREASED SUPPLY CURRENT

DUE TO CATCH DIODE LEAKAGE

AT HIGH TEMPERATURE

INPUT VOLTAGE (V)

05

1.25

1

0.75

1.5

40

3682 G06

0.5

0.25

10

15

20

30

35

25

1.75

TYPICAL

MINIMUM

VOUT = 3.3V

L = 10μH

f = 800kHz

SYNC = 0V

SYNC = 3.3V

INPUT VOLTAGE (V)

5

1

0.75

1.25

40

3682 G07

0.5

0.25

10

15

20

30

35

25

1.5

TYPICAL

MINIMUM

VOUT = 5V

L = 10μH

f = 800kHz

SYNC = 0V

SYNC = 5V

INPUT VOLTAGE (V)

8

1

1.25

20

3682 G08

0.5

0.75

0.25

10

12

14

16

18

1.5

TYPICAL

MINIMUM

VOUT = 5V

L = 4.7μH

f = 2MHz

SYNC = 0V

SYNC = 5V

INPUT VOLTAGE (V)

0

1.5

1.25

1.75

40

3682 G09

1

0.75

0.50

0.25

5

10

15

20

30

35

25

TYPICAL

MINIMUM

VOUT = 1.8V

L = 10μH

f = 500kHz

SYNC = 0V

SYNC = 3.3V

No Load Supply Current

Maximum Load Current

Efﬁciency (VOUT = 5V, SYNC = 0V)

Efﬁciency (VOUT = 3.3V, SYNC = 0V)

TA = 25°C, unless otherwise noted.

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