Features

• Standalone USB Charger
• Up to 950mA Charge Current Programmable via
• Single Resistor
• HPWR Input Selects 20% or 100% of Programmed Charge Current
• NTC Input for Temperature Qualified Charging
• Internal Timer Termination
• Bad Battery Detection
• Up to 400mA Output Current per Regulator
• 2.25MHz Constant-Frequency Operation
• Power Saving Burst Mode Operation
• Low Profile, 20-Lead, 3mm × 3mm QFN Package

Typical Application

Applications

• SD/Flash-Based MP3 Players
• Low Power Handheld Applications

Packaging

Datasheet

• LTC3558 - Linear USB Battery Charger with Buck and Buck-Boost Regulators

Reliability Data

• R457 - Reliability Data

LT Journal

• September 2008 - New Family of Integrated Power Controllers Combine Fast Battery Charging, PowerPath Control and Efficient DC/DC Converters in Less Than 20mm2

Press Release

• Monolithic Linear USB Battery Charger with High Efficiency Buck-Boost & Buck Converters

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