LT3743IFETRPBF datasheet(6/28 Pages) LINER

Part #	LT3743IFETRPBF

Description	High Current Synchronous Step-Down LED Driver with Three-State Control

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3743

6

3743f

TYPICAL PERFORMANCE CHARACTERISTICS

VCC_INT Load Reg at 12V

Regulated Current vs VFB

Open-LED Threshold

Open-LED Timeout

Regulated Sense Voltage

Common Mode Lockout

Internal UVLO

CBOOT-SW UVLO Voltage

VCC_INT UVLO

TEMPERATURE (°C)

–50

4.0

4.5

5.0

90

3743 G10

3.5

3.0

–15

20

55

125

TEMPERATURE (°C)

–50

1.50

1.75

2.00

2.25

2.50

2.75

3.00

–15

20

55

90

3743 G11

125

TEMPERATURE (°C)

–50

2.50

2.75

3.00

3.25

3.50

3.75

4.00

–15

20

55

90

3743 G12

125

ILOAD (mA)

0

5.2

5.6

6.0

40

3743 G13

4.8

4.4

4.0

10

20

30

60

50

VFB (mV)

800

0

20

40

60

80

100

120

850

900

950

1000

3743 G14

1050

–50°C

125°C

TEMPERATURE (°C)

–50

1.3

1.4

1.5

90

3743 G15

1.2

1.1

1.0

–15

20

55

125

TEMPERATURE (°C)

–50

15

17

19

90

3743 G16

13

11

9

–15

20

55

125

VCTRL (V)

0

10

20

30

40

50

60

0.5

1.0

1.5

3743 G17

2.0

TEMPERATURE (°C)

–50

1.5

2.0

2.5

90

3743 G18

1.0

0.5

0

–15

20

55

125

VIN = 6V

VIN = 36V

MEASURED VIN – VOUT

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LT3743IFETRPBF Datasheet(PDF) 6 Page - Linear Technology

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