VIN

(2V/DIV)

VOUT

(5V/DIV)

VLED

(5V/DIV)

ILED

(50 mA/DIV)

Time

(400 ms/DIV)

VTORCH

(1V/DIV)

ILED

(20 mA/DIV)

Time

(10 ms/DIV)

IIN

(200 mA/DIV)

VOUT

(2V/DIV)

VLED

(200 mA/DIV)

ILED

(200 mA/DIV)

Time

(1 ms/DIV)

IIN

(500 mA/DIV)

VOUT

(2V/DIV)

VLED

(2V/DIV)

Time

(80 Ps/DIV)

IIN

(500 mA/DIV)

VOUT

(2V/DIV)

VLED

(2V/DIV)

Time

(400 Ps/DIV)

IIN

(500 mA/DIV)

VOUT

(2V/DIV)

VLED

(5V/DIV)

ILED

(50 mA/DIV)

Time

(1 ms/DIV)

13

LM3555

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SNVS594G – DECEMBER 2008 – REVISED APRIL 2016

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Typical Characteristics (continued)

Unless otherwise specified: TA = 25°C; VIN = 3.6 V; CIN1= 10 µF, CIN2= 0.1 µF, COUT = 11 µF; L = 2.2 µH.

Figure 31. Overvoltage Protection Fault (OVP)

Figure 32. VOUT Short to GND Fault

Figure 33. VLED Short to GND Fault

Figure 34. Broken Inductor Fault

Figure 35. Undervoltage Lockout (UVLO)

Figure 36. Torch Deglitching Time