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reference designLTC3558 | Demoboard DC1276B

Analog Devices LTC3558 | Demoboard DC1276B

LTC3558EUD: Linear USB Battery Charger with Buck and Buck-Boost Regulators

Overview

TopologyBuck Converter
Input voltage4.35-5.5 V
Output 11.23 V / 0.5 A
IC revisionR1

Description

Demonstration Circuit DC1276B is a Linear USB BatteryCharger with Buck and Buck-Boost Convertersfeaturing the LTC®3558EUD. The LTC3558EUD is alinear battery charger IC for Li-Ion/polymer battery applications,with a general purpose synchronous stepdownswitching regulator and a general purpose buckboostregulator. For USB powered applications, thebattery charge current can be limited to 500mA, bysetting RPROG to 1.74 kΩ. For non-USB powered applications,the charge current can be set as high as950mA, by simply changing RPROG. The buck and thebuck-boost switching regulators can deliver up to400mA load current, each. The LTC3558EUD is availablein 20-pin (3mm × 3mm) QFN surface mountpackage.Design files for this circuit board are available, call theLTC factory.

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λDom typ.(nm)
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λPeak typ.(nm)
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VF typ.(V)
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2θ50% typ.(°)
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150120GS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]525 nm
Emitting ColorGreen 
Peak Wavelength [typ.]515 nm
Luminous Intensity [typ.]450 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
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