LTC3856IFE-TRPBF datasheet(7/40 Pages) LINER

Part #	LTC3856IFE-TRPBF

Description	2-Phase Synchronous Step-Down DC/DC Controller with Diffamp

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC3856

3856f

INPUT VOLTAGE (V)

5

3.3

4.3

4.5

15

25

35

2.9

3.9

3.1

4.1

2.7

2.5

3.7

3.5

10

20

40

30

3856 G08

INPUT VOLTAGE (V)

0

4.75

5.00

4.50

4.25

20

10

30

15

35

5

25

40

3.50

3.25

3.00

4.00

5.25

3.75

3856 G09

VSENSE COMMON MODE VOLTAGE (V)

0

60

70

50

40

2

4

1

3

5

10

0

30

80

20

3856 G11

ILIM = GND

ILIM = FLOAT

ILIM = INTVCC

DUTY CYCLE (%)

0

40

90

100

20

40

60

20

70

30

80

10

0

60

50

10

30

80

100

50

70

90

3856 G12

ILIM = GND

ILIM = FLOAT

ILIM = INTVCC

FEEDBACK VOLTAGE (V)

0

0.2

0.4

0.1

0.3

0.6

0.5

3856 G13

40

90

100

20

70

30

80

10

0

60

50

ILIM = GND

ILIM = FLOAT

ILIM = INTVCC

TEMPERATURE (°C)

–50

1.4

–25

25

0

50

75

100 125

1.1

1.0

1.3

1.5

1.2

3856 G14

VITH (V)

0

–40

–20

0

20

40

60

80

0.5

1

1.5

2

3856 G10

ILIM = GND

ILIM = FLOAT

ILIM = INTVCC

Typical perForMance characTerisTics

Current Sense Threshold

vs ITH Voltage

Maximum Current Sense Threshold

vs Common Mode Voltage

Maximum Current Sense Voltage

vs Duty Cycle

Maximum Current Sense Voltage

vs Feedback Voltage

(Current Foldback)

TK/SS Pull-Up Current

vs Temperature

Load Step with AVP

Quiescent Current vs Input

Voltage without EXTVCC

INTVCC Line Regulation

Load Step without AVP

100µs/DIV

VOUT

50mV/DIV

IL

20A/DIV

3856 G07

VIN = 12V

VOUT = 1.5V

108mV

50A

25A

100µs/DIV

VOUT

50mV/DIV

IL

20A/DIV

3856 G07a

VIN = 12V

VOUT = 1.5V

54mV

50A

25A

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LTC3856IFE-TRPBF Datasheet(PDF) 7 Page - Linear Technology

LTC3856IFE-TRPBF Datasheet(HTML) 7 Page - Linear Technology

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