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BQ25170 - 800-mA Linear Battery Charger

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General Description

The BQ25170 is an integrated 800-mA linear charger for 1-cell Li-Ion, Li-Polymer, and LiFePO4 batteries targeted at space-limited portable applications.

The device has a single power output that charges the battery.

The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration.

Overview

SLUSDJ8A – APRIL 2020 – REVISED BBAPQQR22IL552110772001 SLUSDJ8A – APRIL 2020 – REVISED APRIL 2021 BQ25170: 800-mA Linear Battery Charger for 1-Cell Li-Ion, and LiFePO4.

Key Features

  • Input voltage up-to 30-V tolerant.
  • Automatic Sleep Mode for low power consumption.
  • 350-nA battery leakage current.
  • 85-µA input leakage current when charge disabled.
  • Supports 1-cell Li-Ion, Li-Poly, and LiFePO4.
  • External resistor programmable operation.
  • VSET to set battery regulation voltage:.
  • Li-Ion: 4.05 V, 4.1 V, 4.2 V, 4.35 V, 4.4 V.
  • LiFePO4: 3.5 V, 3.6 V, 3.7 V.
  • ISET to set charge current from 10 mA to.

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