LM3555 datasheet(13/37 Pages) TI2

Part #	LM3555

Description	LM3555 Synchronous Boost Converter With 500-mA High-Side LED Driver and Dual-Mode Control Interface

PDF	37 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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13 / 37 page

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)

LM3555

www.ti.com

SNVS594G – DECEMBER 2008 – REVISED APRIL 2016

Product Folder Links: LM3555

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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

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