LM3550 datasheet(12/37 Pages) TI1

tên linh kiện	LM3550

Giải thích chi tiết về linh kiện	5A Flash LED Driver with Automatic VLED and ESR Detection for Mobile Camera Systems

PDF	37 Pages

Scroll/Zoom	100%

nhà sản xuất	TI1 [Texas Instruments]

Trang chủ	http://www.ti.com

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IFlash = 2.1A

(70% Flash)

TIME (20 ms/div.)

VALS = 500 mV

ICharge

(500 mA/div.)

IIN

(500 mA/div.)

STROBE

IFlash = 0A

(0% Flash)

TIME (20 ms/div.)

VALS = 1V

ICharge

(500 mA/div.)

IIN

(500 mA/div.)

STROBE

IFlash = 3A

TIME (40 ms/div.)

VCAP

2V/div.

ICharge

(500 mA/div.)

IIN

(500 mA/div.)

STROBE

EOCB

IFlash = 3A

(100% Flash)

TIME (20 ms/div.)

VALS = 100 mV

ICharge

(500 mA/div.)

IIN

(500 mA/div.)

STROBE

IFlash = 3A

TIME (20 ms/div.)

VCAP

2V/div.

ICharge

(500 mA/div.)

IIN

(500 mA/div.)

STROBE

EOCB

IFlash = 3A

TIME (40 ms/div.)

VCAP

2V/div.

ICharge

(500 mA/div.)

IIN

(500 mA/div.)

STROBE

EOCB

LM3550

SNVS569B – MAY 2009 – REVISED MAY 2013

www.ti.com

Typical Performance Characteristics (continued)

Unless otherwise specified: TA = 25°C; VIN = 3.6V; CIN = 4. 7 µF, COUT = 2.2 µF, C1 = C2 = 1 µF. Super-Capacitor = 0.5F

TDK EDLC272020-501-2F-50,

Level-Sensitive Strobe

Flash with FGATE = 0

Figure 39.

Figure 40.

ALS DETECT

Flash with FGATE = 1

Zone 0, VALS = 100 mV

Figure 41.

Figure 42.

ALS DETECT

Zone 1, VALS = 500 mV

Zone 2, VALS = 1V

Figure 43.

Figure 44.

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