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LM3550 Datasheet(PDF) 12 Page - Texas Instruments

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Part # LM3550
Description  5A Flash LED Driver with Automatic VLED and ESR Detection for Mobile Camera Systems
PDF  37 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3550 Datasheet(HTML) 12 Page - Texas Instruments

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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
ALS DETECT
Zone 1, VALS = 500 mV
Zone 2, VALS = 1V
Figure 43.
Figure 44.
12
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Copyright © 2009–2013, Texas Instruments Incorporated
Product Folder Links: LM3550



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