LTC3854IMSE datasheet(5/28 Pages) LINER

Part #	LTC3854IMSE

Description	Small Footprint, Wide VIN Range Synchronous Step-Down DC/DC Controller

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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5 / 28 page

LTC3854

3854fa

Switching Waveforms at No Load

Switching Waveforms at High

Duty Cycle, No Load

Typical perForMance characTerisTics

Quiescent Current vs VIN

Quiescent Current vs Temperature

INTVCC vs Input Voltage

Maximum Current Sense Threshold

vs Sense Common Mode Voltage

Maximum Current Sense Threshold

vs Duty Cycle

Maximum Current Sense Voltage

vs Feedback Voltage

(Current Foldback)

BG

VOUT = 5V

IL

TG

1µs/DIV

3854 G06

BG

VOUT = 2.5V

IL

TG

2µs/DIV

3854 G07

VIN (V)

6

1.17

1.13

1.11

1.14

1.15

1.16

1.12

1.10

1.09

26

16

36

3854 G08

21

11

31

TEMPERATURE (°C)

–45

1.30

1.10

1.00

1.15

1.20

1.25

1.05

0.95

0.90

35

–5

75

3854 G09

95

15

–25

55

VIN (V)

4

5.05

5.00

4.90

4.95

4.85

4.80

24

14

34

3854 G10

39

19

9

29

COMMON MODE VOLTAGE (V)

0

60

56

48

50

52

54

58

42

44

46

40

4

2

6

3854 G11

7

3

1

5

DUTY CYCLE (%)

0

65

55

50

60

40

45

35

80

40

3854 G12

120

60

20

100

FB (V)

0.05

0

60

40

30

50

10

20

0

0.45

0.25

3854 G13

0.75

0.35

0.15

0.55 0.65

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LTC3854IMSE Datasheet(PDF) 5 Page - Linear Technology

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