LM3643AYFFR datasheet(9/39 Pages) TI

номер детали	LM3643AYFFR

подробное описание детали	Synchronous Boost Dual LED Flash Driver with 1.5-A High-Side Current Sources

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производитель	TI [Texas Instruments]

домашняя страница	http://www.ti.com

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VIN (V)

2.5

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

4.3

1.6

1.64

1.68

1.72

1.76

1.8

1.84

1.88

1.92

1.96

2

2.04

2.08

2.12

2.16

2.2

D012

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

2.75

3

3.25

3.5

3.75

4

4.25

4.5

4.75

5

1.4

1.6

1.8

2

2.2

2.4

2.6

2.8

3

D013

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0

1

2

3

4

5

6

7

D010

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

4.3

1.6

1.64

1.68

1.72

1.76

1.8

1.84

1.88

1.92

1.96

2

2.04

2.08

2.12

2.16

2.2

D011

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0

0.5

1

1.5

2

2.5

3

D009

TA = -40GC

TA = +25GC

TA = +85GC

VIN (V)

2.5

3

3.5

4

4.5

5

5.5

0

1

2

3

4

5

6

7

D008

TA = -40GC

TA = +25GC

TA = +85GC

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 .

HWEN = VIN

I2C = VIN

HWEN = 1.8 V

I2C = 0 V

Figure 18. Standby Current vs Input Voltage

Figure 19. Standby Current vs Input Voltage

HWEN = 1.8 V

I2C = 1.8 V

ILED = 1.5 A

ƒSW = 2 MHz

VLED = 4.5 V

ICL = 1.9 A

Figure 20. Standby Current vs Input Voltage

Figure 21. Inductor Current Limit vs Input Voltage

ILED = 1.5 A

ƒSW = 4 MHz

VLED = 4.5 V

ILED = 1.5 A

ƒSW = 2 MHz

VLED = 4.5 V

ICL = 1.9 A

ICL = 2.8 A

Figure 22. Inductor Current Limit vs Input Voltage

Figure 23. Inductor Current Limit vs Input Voltage

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