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LTC3557 - USB Power Manager

Description

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

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.

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📁 Similar Datasheet

Part Number Description Manufacturer
LTC3553 Micropower USB Power Manager Linear Technology Corporation
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Other Datasheets by Linear Technology (Analog Devices)

Part Number Description
LTC3557-1 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

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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LTC3557/LTC3557-1 USB Power Manager with Li-Ion Charger and Three Step-Down Regulators 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 Maximum Charge Current with Thermal Limiting ■ Battery Float Voltage: 4.2V (LTC3557) 4.
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