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BQ21040 - Single Cell Li-Ion and Li-Pol Battery Charger

Description

The bq21040 device is a highly integrated Li-Ion and Li-Pol linear battery charger device targeted at spacelimited portable applications.

The device operates from either a USB port or AC adapter.

The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.

Features

  • 1 Charging.
  • 1% Charge Voltage Accuracy.
  • 10% Charge Current Accuracy.
  • Low Battery Leakage Current (1 µA).
  • Programmable Charge Current using External Resistor up to 800 mA.
  • 4.2-V Li-Ion and Li-Pol Charger.
  • Protection.
  • 30-V Input Rating; with 6.6-V Input Overvoltage Protection.
  • Input Voltage Dynamic Power Management.
  • 125°C Thermal Regulation; 150°C Thermal Shutdown Protection.
  • OUT Short-Circuit Protec.

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Full PDF Text Transcription

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Product Folder Order Now Technical Documents Tools & Software Support & Community bq21040 SLUSCE2D – APRIL 2016 – REVISED JANUARY 2019 bq21040 0.8-A, Single-Input, Single Cell Li-Ion and Li-Pol Battery Charger 1 Features •1 Charging – 1% Charge Voltage Accuracy – 10% Charge Current Accuracy – Low Battery Leakage Current (1 µA) – Programmable Charge Current using External Resistor up to 800 mA – 4.2-V Li-Ion and Li-Pol Charger • Protection – 30-V Input Rating; with 6.
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