LM3644YFFR datasheet(10/41 Pages) TI1

No de pièce	LM3644YFFR

Description	Dual 1.5A Current Source Camera Flash LED Driver

Download	41 Pages

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Fabricant	TI1 [Texas Instruments]

Site Internet	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

D011

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

D012

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

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

3

3.5

4

4.5

5

5.5

0

0.2

0.4

0.6

0.8

1

1.2

D007

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

LM3644, LM3644TT

SNVSA52D – AUGUST 2014 – REVISED SEPTEMBER 2015

www.ti.com

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 = 0 V

I2C = 0 V

HWEN = VIN

I2C = VIN

Figure 22. Shutdown Current vs Input Voltage

Figure 23. Standby Current vs Input Voltage

HWEN = 1.8 V

I2C = 0 V

HWEN = 1.8 V

I2C = 1.8 V

Figure 24. Standby Current vs Input Voltage

Figure 25. Standby Current vs Input Voltage

ILED = 1.5 A

ƒSW = 2 MHz

VLED = 4.5 V

ILED = 1.5 A

ƒSW = 4 MHz

VLED = 4.5 V

ICL = 1.9 A

Figure 26. Inductor Current Limit vs Input Voltage

Figure 27. Inductor Current Limit vs Input Voltage

10

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Product Folder Links: LM3644 LM3644TT

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