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Battery charger ICs

BQ24061

ACTIVE

1-cell, 1-A, linear Li-ion battery charger w/ thermal regulation, 10.5V OVP, charge sense

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Data sheet

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BQ25170 ACTIVE 800-mA linear battery charger for 1-cell Li-ion and LiFePO4 This product is an 800-mA, single cell Li-Ion and LiFePO4 battery linear charger with programmable charge voltage

BQ24061

ACTIVE
Data sheet Order now

Product details

Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 16.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 18 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 16.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 18 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
VSON (DRC) 10 9 mm² 3 x 3
  • Ideal for Low-Dropout Designs for Single-Cell Li-Ion or Li-Pol Packs in Space Limited Applications
  • Integrated Power FET and Current Sensor for up to 1-A Charge Applications
  • Reverse Leakage Protection Prevents Battery Drainage
  • ±0.5% Voltage Regulation Accuracy
  • Thermal Regulation Maximizes Charge Rate
  • Charge Termination by Minimum Current and Time
  • Precharge Conditioning With Safety Timer
  • Status Outputs for LED or System Interface Indicate Charge, Fault, and Power Good Outputs
  • Short-Circuit and Thermal Protection
  • Automatic Sleep Mode for Low Power Consumption
  • Small 3×3 mm MLP Package
  • Selectable Battery Insertion and Battery Absent Detection
  • Input Overvoltage Protection
    • 6.5 V and 10.5 V Options
  • APPLICATIONS
    • PDA, MP3 Players, Digital Cameras
    • Internet Appliances and Handheld Devices
  • Ideal for Low-Dropout Designs for Single-Cell Li-Ion or Li-Pol Packs in Space Limited Applications
  • Integrated Power FET and Current Sensor for up to 1-A Charge Applications
  • Reverse Leakage Protection Prevents Battery Drainage
  • ±0.5% Voltage Regulation Accuracy
  • Thermal Regulation Maximizes Charge Rate
  • Charge Termination by Minimum Current and Time
  • Precharge Conditioning With Safety Timer
  • Status Outputs for LED or System Interface Indicate Charge, Fault, and Power Good Outputs
  • Short-Circuit and Thermal Protection
  • Automatic Sleep Mode for Low Power Consumption
  • Small 3×3 mm MLP Package
  • Selectable Battery Insertion and Battery Absent Detection
  • Input Overvoltage Protection
    • 6.5 V and 10.5 V Options
  • APPLICATIONS
    • PDA, MP3 Players, Digital Cameras
    • Internet Appliances and Handheld Devices

The bq2406x series are highly integrated Li-Ion and Li-Pol linear chargers, targeted at space-limited portable applications. The bq2406x series offers a variety of safety features and functional options, while still implementing a complete charging system in a small package. The battery is charged in three phases: conditioning, constant or thermally regulated current, and constant voltage. Charge is terminated based on minimum current. An internal programmable charge timer provides a backup safety feature for charge termination and is dynamically adjusted during the thermal regulation phase. The bq2406x automatically re-starts the charge if the battery voltage falls below an internal threshold; sleep mode is set when the external input supply is removed. Multiple versions of this device family enable easy design of the bq2406x in cradle chargers or in the end equipment, while using low cost or high-end AC adapters.

The bq2406x series are highly integrated Li-Ion and Li-Pol linear chargers, targeted at space-limited portable applications. The bq2406x series offers a variety of safety features and functional options, while still implementing a complete charging system in a small package. The battery is charged in three phases: conditioning, constant or thermally regulated current, and constant voltage. Charge is terminated based on minimum current. An internal programmable charge timer provides a backup safety feature for charge termination and is dynamically adjusted during the thermal regulation phase. The bq2406x automatically re-starts the charge if the battery voltage falls below an internal threshold; sleep mode is set when the external input supply is removed. Multiple versions of this device family enable easy design of the bq2406x in cradle chargers or in the end equipment, while using low cost or high-end AC adapters.

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BQ24040 ACTIVE Standalone 1-cell 1-A linear battery charger with 4.2-V VBAT and Temperature Sensing This product is a 1-A, standalone, single-cell Li-Ion battery charger in a 2x2mm package.

Technical documentation

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Type Title Date
* Data sheet 1A Single-Chip Li-Ion/Li-Pol Charge Management IC With Thermal Regulation datasheet (Rev. A) 02 Oct 2006
Application note BQ2404x, BQ2405x, and BQ2409x Frequently Asked Questions 25 Feb 2019
User guide bq24060x Evaluation Module 14 Feb 2006

Design & development

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Evaluation board

BQ24061EVM-002 — bq24061 Evaluation Module

The bq24061EVM is an evaluation tool for the bq24061 linear single-cell Li-Ion charger with thermal regulation and input over-voltage protection. The EVM is a complete designed-and-tested charger circuit that allows the user to test all functions of the bq24061 and to charge a single-cell Li-Ion (...)

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VSON (DRC) 10 View options
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