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HM5801 - PMU

Description

The HM5801 is a integrated power management unit for small handheld portable applications.

It contains a single-cell Lithium Ion battery charger, a synchronous step-down DC-DC converter and 2 Low Dropout Regulators.

It allows charging from both wall adapter and USB port.

Features

  • z Integrated switch for USB/AC Adapter supply z 120uA quiescent supply current(includes step-down DC-DC converters and two low dropout regulators) z Integrated single-cell lithium ion battery charger ‹ Auto thermal regulated ‹ Charging current up to 1.2 A ‹ Charging current adjusted by external resistor z Integrated step-down DC-DC converter ‹ Output voltage adjusted by external resistor ‹ Output current up to 800mA.

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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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HM5801 PMU for Portable Applications GENERAL DESCRIPTION The HM5801 is a integrated power management unit for small handheld portable applications. It contains a single-cell Lithium Ion battery charger, a synchronous step-down DC-DC converter and 2 Low Dropout Regulators. It allows charging from both wall adapter and USB port. When charging from wall adapter, the HM5801 increases the charging current automatically. The battery charger is a highly integrated charging management device targeted at space limited portable applications. It offers an integrated MOSFET and current sensor, reverse blocking protection, high accuracy current and voltage regulation, and charge termination. It charges a battery in three phases: trickle charging, constant current, and constant voltage.
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