LM3556 datasheet(9/38 Pages) TI2

Part #	LM3556

Description	LM3556 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

PDF	38 Pages

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Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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9 / 38 page

40 ms/DIV

100 mV/

DIV

VOUT

200 mA/

DIV

IIN

ILED

200 mA/

DIV

400 s/DIV

1A/DIV

VIN

200 mV/

DIV

ILED

IIN

1A/DIV

100ms/DIV

2V/DIV

VOUT

500mA/

DIV

IIN

STROBE

ILED

2V/DIV

1A/DIV

100 ms/DIV

2V/DIV

VOUT

500 mA/

DIV

IIN

STROBE

ILED

2V/DIV

1A/DIV

2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2

3.34

3.36

3.38

3.40

3.42

3.44

3.46

3.48

3.50

3.52

VIN (V)

25°C

- 40°C

85°C

1 ms/DIV

1V/DIV

VOUT

1A/DIV

IIN

VIN

ILED

2V/DIV

1A/DIV

LM3556

www.ti.com

SNVS796D – AUGUST 2011 – REVISED OCTOBER 2015

Typical Characteristics (continued)

Current Limit = 1.7 A

Current Limit = 3.1 A

Figure 15. Start-Up Plot With Part In Boost Mode Current

Figure 14. Input Current Limit Over Temperature and VIN

Limit

400 ms

Figure 17. Strobe With Level-Triggered Signal

Figure 16. Strobe With Edge-Triggered Signal

Figure 18. Internal Indicator Operation

Figure 19. Input Voltage Flash Monitor Report Mode With

Default Settings

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