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ETA9722 - 1.2A Boost and 3 LED-indicators

General Description

ETA9722 is a switching Li-Ion battery charger capable of delivering up to 1.2A of charging current to the battery and also capable of delivering up to 5V/1.2A in boost operation, with high efficiency in both charging mode and boost mode.

It also includes a fuel gauge system for power indication.

Key Features

  • Bi-Directional Power conversion with Single Inductor.
  • Automatic Mode Switching.
  • Switching Charger.
  • 5V Synchronous Boost.
  • Up to 96% Efficiency.
  • Up to 1.2A Max charging current and 1.2A discharging.
  • No-Battery detection.
  • No External Sense resistor.
  • LEDs for battery level indication and charge/discharge status indication.

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Datasheet Details

Part number ETA9722
Manufacturer ETA
File Size 534.82 KB
Description 1.2A Boost and 3 LED-indicators
Datasheet download datasheet ETA9722 Datasheet

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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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ETA9722 1.2A Switching Charger, 1.2A Boost and 3 LED-indicators for battery level, charge/discharge status in One ESOP8 with Single Inductor DESCRIPTION ETA9722 is a switching Li-Ion battery charger capable of delivering up to 1.2A of charging current to the battery and also capable of delivering up to 5V/1.2A in boost operation, with high efficiency in both charging mode and boost mode. It also includes a fuel gauge system for power indication. For charging, it uses a proprietary control scheme that eliminates the current sense resistor for conventional constant current control, maximizing efficiency, reducing charging time and reducing costs. It can also output a 5V voltage in the reversed direction by boosting from the battery.