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LTC3557-1 Datasheet USB Power Manager

Manufacturer: Linear Technology (now Analog Devices)

Overview: LTC3557/LTC3557-1 USB Power Manager with Li-Ion Charger and Three Step-Down.

Download the LTC3557-1 datasheet PDF. This datasheet also includes the LTC3557 variant, as both parts are published together in a single manufacturer document.

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General Description

The LTC®3557/LTC3557-1 is a highly integrated power management and battery charger IC for single cell Li-Ion/ Polymer battery applications.

It includes a PowerPathTM manager with automatic load prioritization, a battery charger, an ideal diode and numerous internal protection

Key Features

  • Seamless Transition Between Input Power Sources: Li-Ion Battery, USB, 5V Wall Adapter or High Voltage Buck Regulator with Bat-TrackTM.
  • 200mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Provides Low Loss Power Path When Input Current is Limited or Unavailable.
  • Triple Adjustable High Efficiency Step-Down Switching Regulators (600mA, 400mA, 400mA IOUT).
  • Pin Selectable Burst Mode® Operation.
  • Full Featured Li-Ion/Polymer Battery Charger.
  • 1.5A Maxim.

More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
LTC3557 USB Power Manager
LTC3550 Dual Input USB/AC Adapter Li-Ion Battery Charger
LTC3550-1 Dual Input USB/AC Adapter Li-Ion Battery Charger
LTC3552 Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter
LTC3552-1 Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter
LTC3555 High Efficiency USB Power Manager + Triple Step-Down DC/DC
LTC3558 Linear USB Battery Charger
LTC3559 Linear USB Battery Charger
LTC3559-1 Linear USB Battery Charger
LTC3520 Synchronous 1A Buck-Boost and 600mA Buck Converters