LTC3834-1 datasheet(6/28 Pages) LINER

Part #	LTC3834-1

Description	30關A IQ Synchronous Step-Down Controller

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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6

LTC3834-1

38341f

TYPICAL PERFOR A CE CHARACTERISTICS T

A = 25ºC, unless otherwise noted.

TRACK/SS Pull-Up Current vs

Temperature

Shutdown (RUN) Threshold vs

Temperature

Regulated Feedback Voltage vs

Temperature

Undervoltage Lockout Threshold

vs Temperature

SENSE Pins Total Input Bias

Current vs Temperature

Shutdown Current vs Input

Voltage

Oscillator Frequency vs

Temperature

TEMPERATURE (

°C)

1.05

1.10

1.20

1.25

1.30

45

38341 G19

1.00

0.95

0

–15

–30

–45

15

30

60

75

90

0.90

1.15

TEMPERATURE (

°C)

0.80

0.75

0.70

0.65

0.60

0.55

0.50

1.00

0.95

0.90

0.85

45

60

75

90

38341 G20

0

–15

–30

–45

15

30

TEMPERATURE (

°C)

800

798

796

794

792

808

806

804

802

45

60

75

90

38341 G21

0

–15

–30

–45

15

30

TEMPERATURE (

°C)

–120

–150

–180

–210

–240

30

0

–30

–60

–90

60

45

60

75

90

38341 G22

–270

0

–15

–30

–45

15

30

–300

VOUT = 10V

VOUT = 3.3V

VOUT = 0V

INPUT VOLTAGE (V)

8

10

35

38341 G23

6

4

20

15

10

525

30

2

0

12

TEMPERATURE (

°C)

400

500

700

800

55

38341 G24

300

200

–5

–25

–45

15

35

75

95

100

0

600

VPLLLPF = INTVCC

VPLLLPF = FLOAT

VPLLLPF = GND

TEMPERATURE (

°C)

3.6

3.5

3.4

3.3

3.2

4.1

4.0

3.9

3.8

3.7

4.2

45

60

75

90

38341 G25

0

–15

–30

–45

15

30

RISING

FALLING

SENSE Pins Total Input Bias

Current vs ITH

ITH VOLTAGE (V)

2

3

4

1.2

38341 G18

1

0.6

0.4

0.2

0

0.8

1.0

1.4

0

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