LM3643YFFR datasheet(7/39 Pages) TI

Nome de Peças	LM3643YFFR

Descrição Electrónicos	Synchronous Boost Dual LED Flash Driver with 1.5-A High-Side Current Sources

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Fabricante Electrônico	TI [Texas Instruments]

Página de início	http://www.ti.com

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VIN (V)

2.5

3

3.5

4

4.5

5

5.5

1.4

1.42

1.44

1.46

1.48

1.5

1.52

1.54

1.56

1.58

1.6

1.62

D022

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

1.4

1.42

1.44

1.46

1.48

1.5

1.52

1.54

1.56

1.58

1.6

D021

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

D005

BRC = 0

BRC = 7

BRC = 15

BRC = 23

BRC = 31

BRC = 39

BRC = 47

BRC = 55

BRC = 63

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

D006

BRC = 71

BRC = 79

BRC = 87

BRC = 95

BRC = 103

BRC = 111

BRC = 119

BRC = 127

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

D003

BRC = 0

BRC = 7

BRC = 15

BRC = 23

BRC = 31

BRC = 39

BRC = 47

BRC = 55

BRC = 63

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

D004

BRC = 71

BRC = 79

BRC = 87

BRC = 95

BRC = 103

BRC = 111

BRC = 119

BRC = 127

LM3643, LM3643A

www.ti.com

SNVS967A – AUGUST 2014 – REVISED NOVEMBER 2014

Typical Characteristics (continued)

Ambient temperature is 25°C, input voltage is 3.6 V, HWEN = VIN, CIN = COUT = 2 × 10 µF and L = 1 µH, unless otherwise

noted .

Figure 6. LED1 Current vs Input Voltage

Figure 7. LED1 Current vs Input Voltage

Figure 8. LED2 Current vs Input Voltage

Figure 9. LED2 Current vs Input Voltage

ILED = 1.5 A

ƒSW = 2 MHz

Flash

ILED = 1.5 A

ƒSW = 4 MHz

Flash

Figure 10. LED1/2 Current vs Input Voltage

Figure 11. LED1/2 Current vs Input Voltage

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Product Folder Links: LM3643 LM3643A

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