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ETA9741 - 2.4A Boost and Fuel Gauge

General Description

ETA9741 is a switching Li-Ion battery charger capable of delivering 2A of charging current to the battery and also capable of delivering up to 5V/2.4A 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.
  • 2A charging current and 2.4A discharging.
  • No-Battery detection.
  • No External Sense resistor.
  • 4 LEDs Fuel gauge.
  • Button Controlled.

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Datasheet Details

Part number ETA9741
Manufacturer ETA
File Size 707.27 KB
Description 2.4A Boost and Fuel Gauge
Datasheet download datasheet ETA9741 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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ETA9741 2A Switching Charger, 2.4A Boost and Fuel Gauge with Single Inductor DESCRIPTION ETA9741 is a switching Li-Ion battery charger capable of delivering 2A of charging current to the battery and also capable of delivering up to 5V/2.4A 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. It only needs a single inductor to provide power bidirectionally with a proprietary automatic mode detect and switch scheme.