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LTC3558 - Linear USB Battery Charger

General Description

The LTC®3558 is a USB battery charger with dual high efficiency switching regulators.

The device is ideally suited to power single-cell Li-Ion/Polymer based handheld applications needing multiple supply rails.

Key Features

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

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Other Datasheets by Linear Technology (Analog Devices)

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LTC3550 Dual Input USB/AC Adapter Li-Ion Battery Charger
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FEATURES Battery Charger n Standalone USB Charger n Up to 950mA Charge Current Programmable via Single Resistor n HPWR Input Selects 20% or 100% of Programmed Charge Current n NTC Input for Temperature Qualified Charging n Internal Timer Termination n Bad Battery Detection Switching Regulators (Buck and Buck-Boost) n Up to 400mA Output Current per Regulator n 2.25MHz Constant-Frequency Operation n Power Saving Burst Mode® Operation n Low Profile, 20-Lead, 3mm × 3mm QFN Package APPLICATIONS n SD/Flash-Based MP3 Players n Low Power Handheld Applications LTC3558 Linear USB Battery Charger with Buck and Buck-Boost Regulators DESCRIPTION The LTC®3558 is a USB battery charger with dual high efficiency switching regulators.