LM3556 datasheet(7/31 Pages) TI1

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0.1

0.3

0.5

0.7

0.9

1.1

1.3

1.5

100

ILED(A)

VIN =4.2V

VIN =3.9V

VIN =3.6V

VIN =3.3V

VIN =3.0V

VIN =2.7V

2.7 3.1 3.4 3.8 4.1 4.5 4.8 5.2 5.5

0.340

0.348

0.355

0.363

0.370

0.378

0.385

0.393

0.400

VIN (V)

TA=25°C

TA=85°C

TA=-40°C

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

1.40

1.45

1.50

1.55

1.60

VIN(V)

TA = -40°C

TA = +25°C

TA = -+85°C

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

100

VIN(V)

TA = -40°C

TA = +25°C

TA = +85°C

SCL

SDA_IN

SDA_OUT

t 5

t 1

t 4

t 3

LM3556

www.ti.com

SNVS796C – AUGUST 2011 – REVISED APRIL 2013

Figure 3. I2C-Compatible Interface Specifications

TYPICAL PERFORMANCE CHARACTERISTICS

Flash LED Current vs. VIN

Flash LED Efficiency vs. VIN

VLED = 3.6V, ILED = 1.5A

Figure 4.

Figure 5.

Flash LED Efficiency vs. Flash LED Current

Torch LED Current vs. VIN

VLED = 3.8V

VLED = 3V, ILED = 375mA

Figure 6.

Figure 7.

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