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LM3554 Fiches technique(PDF) 8 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) 8 Page - Texas Instruments

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LM3554
SNVS549A – JUNE 2009 – REVISED APRIL 2011
www.ti.com
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.
Efficiency
Efficiency
vs
vs
IOUT
VIN
(Voltage Output Mode, VOUT = 5V)
(Voltage Output Mode, VOUT = 5V)
VOUT
VOUT
vs
vs
IOUT
VIN
(Voltage Output Mode, VOUT = 5V)
(Voltage Output Mode, VOUT = 5V)
Torch Current Matching
vs
Torch Current
Code
vs
(VIN= 3.6V, VLED1, VLED2 = 3.2V,
VIN
TA = -40°C to +85°C,
(1) )
(VLED1, VLED2 = 3.2V, TA = +25°C, 75mA setting)
(1)
Current Matching = Absolute Value((ILED1 - ILED2)/(ILED1 + ILED2)) × 100
8
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Copyright © 2009–2011, Texas Instruments Incorporated
Product Folder Links: LM3554



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