500 mA/

DIV

TX

LED

CURRENT

2V/DIV

100 ms/DIV

IIN

500 mA/

DIV

500 mA/

DIV

VOUT

ILED

5V/DIV

2 ms/DIV

IIN

500 mA/

DIV

500 mA/

DIV

VOUT

ILED

5V/DIV

2 ms/DIV

IIN

500 mA/

DIV

500 mA/

DIV

VOUT

ILED

5V/DIV

200 ms/DIV

IIN

500 mA/

DIV

500 mA/

DIV

VOUT

ILED

5V/DIV

200 ms/DIV

IIN

500 mA/

DIV

LM3642

www.ti.com

SNVS891H – SEPTEMBER 2012 – REVISED SEPTEMBER 2015

Figure 22. Torch Mode to Flash Mode Transition

Figure 23. Indicator Mode - Torch Mode - Flash Mode

Transitions

Figure 25. VOUT Short Fault

Figure 24. VLED Short Fault

Figure 26. TX Transition Plot Behavior of LED Current Shown on Enabling the Part in a TX Event and Upon TX Interrupting

During a Flash

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