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LM3554 Fiches technique(PDF) 13 Page - Texas Instruments

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No de pièce LM3554
Description  Synchronous Boost Converter with 1.2A Dual High Side LED Drivers and I2C Compatible
PDF  43 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3554 Fiches technique(HTML) 13 Page - Texas Instruments

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LM3554
www.ti.com
SNVS549A – JUNE 2009 – REVISED APRIL 2011
Typical Performance Characteristics (continued)
VIN = 3.6V, LEDs are Lumiled PWF-4, COUT = 10µF, CIN = 4.7µF, L = FDSE0312-2R2 (2.2µH, RL = 0.15Ω), TA = +25°C unless
otherwise specified.
Torch Mode to Flash Mode Transition
TX1 Interrupt Operation, TX1 Rising
Single LED
Single LED
ITORCH = 295mA, IFLASH = 1.2A
IFLASH = 1.2A, ITORCH = 180mA
Channel 1: VOUT (5V/div)
Channel 1: VOUT (2V/div)
Channel 4: ILED (500mA/div)
Channel 4: ILED (500mA/div)
Channel 2: IL (1A/div)
Channel 2: IL (1A/div)
Channel 3: STROBE (5V/div)
Channel 3: TX1 (5V/div)
Time Base: (100µs/div)
Time Base: (20µs/div)
TX1 Interrupt Operation, TX1 Falling
Single LED
Line Transient
IFLASH = 1.2A, ITORCH = 180mA
(LED Mode, Single LED, IFLASH = 1.2A)
Channel 1: VOUT (2V/div)
Channel 3: VIN (1V/div)
Channel 4: ILED (500mA/div)
Channel 4: ILED (500mA/div)
Channel 2: IL (1A/div)
Channel 2: IL (1A/div)
Channel 3: TX1 (5V/div)
Time Base: (400µs/div)
Time Base: (20µs/div)
Copyright © 2009–2011, Texas Instruments Incorporated
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Product Folder Links: LM3554



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