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BQ25619

AKTIV

I2C-gesteuerter Abwärts-Batterielader für einzelne Zelle, 1,5-A, mit 20-mA-Abschluss und 1-A-Boost

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BQ25619

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Charge current (max) (A) 1.5 Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Vin (max) (V) 13.5 Absolute max Vin (max) (V) 22 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.52 Control interface I2C Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Charge current (max) (A) 1.5 Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Vin (max) (V) 13.5 Absolute max Vin (max) (V) 22 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.52 Control interface I2C Operating temperature range (°C) -40 to 85
WQFN (RTW) 24 16 mm² 4 x 4
  • Single chip solution to charge wearable accessories from adapter or battery
  • High-efficiency, 1.5MHz, synchronous switch-mode buck charger
    • 95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A
    • ±0.5% charge voltage regulation (10mV step)
    • I2C programmable JEITA profile of charge voltage, current and temperature thresholds
    • Low termination current with high accuracy 20mA±10mA
    • Small inductor form factor of 2.5 x 2.0 x 1.0mm3
  • Boost mode with output from 4.6V to 5.15V
    • 94% boost efficiency at 1A output
    • Integrated control to switch between Charge and Boost mode
    • PMID_GOOD pin control external PMOS FET for protection against fault conditions
  • Single input supporting USB input, high-voltage adapter, or wireless power
    • Support 4V to 13.5V input voltage range with 22V absolute max input rating
    • Programmable input current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)
    • Maximum power tracking by input voltage limit (VINDPM) up to 5.4V
    • VINDPM threshold automatically tracks battery voltage
  • Narrow VDC (NVDC) power path management
    • System instant-on with no battery or deeply discharged battery
  • Flexible I2C configuration and autonomous charging for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • Low RDSON 19.5mΩ BATFET to minimize charging loss and extend battery run time
    • BATFET control for Ship mode, and full system reset with and without adapter
  • 7µA low battery leakage current in Ship mode
  • 9.5µA low battery leakage current with system standby
  • High accuracy battery charging profile
    • ±5% charge current regulation
    • ±7.5% input current regulation
    • Remote battery sensing to charge faster
    • Programmable top-off timer for full battery charging
  • Safety Related Certifications:
    • IEC 62368-1 CB Certification
  • Single chip solution to charge wearable accessories from adapter or battery
  • High-efficiency, 1.5MHz, synchronous switch-mode buck charger
    • 95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A
    • ±0.5% charge voltage regulation (10mV step)
    • I2C programmable JEITA profile of charge voltage, current and temperature thresholds
    • Low termination current with high accuracy 20mA±10mA
    • Small inductor form factor of 2.5 x 2.0 x 1.0mm3
  • Boost mode with output from 4.6V to 5.15V
    • 94% boost efficiency at 1A output
    • Integrated control to switch between Charge and Boost mode
    • PMID_GOOD pin control external PMOS FET for protection against fault conditions
  • Single input supporting USB input, high-voltage adapter, or wireless power
    • Support 4V to 13.5V input voltage range with 22V absolute max input rating
    • Programmable input current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)
    • Maximum power tracking by input voltage limit (VINDPM) up to 5.4V
    • VINDPM threshold automatically tracks battery voltage
  • Narrow VDC (NVDC) power path management
    • System instant-on with no battery or deeply discharged battery
  • Flexible I2C configuration and autonomous charging for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • Low RDSON 19.5mΩ BATFET to minimize charging loss and extend battery run time
    • BATFET control for Ship mode, and full system reset with and without adapter
  • 7µA low battery leakage current in Ship mode
  • 9.5µA low battery leakage current with system standby
  • High accuracy battery charging profile
    • ±5% charge current regulation
    • ±7.5% input current regulation
    • Remote battery sensing to charge faster
    • Programmable top-off timer for full battery charging
  • Safety Related Certifications:
    • IEC 62368-1 CB Certification

The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6uA in Ship mode, which conserves battery energy to double the shelf life for the device. The BQ25619 is in a 4mm × 4mm QFN package for easy layout. The BQ25618 is in a 2.0mm × 2.4mm WCSP package for space limited design.

The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6uA in Ship mode, which conserves battery energy to double the shelf life for the device. The BQ25619 is in a 4mm × 4mm QFN package for easy layout. The BQ25618 is in a 2.0mm × 2.4mm WCSP package for space limited design.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ25618/619 I2C Controlled 1-Cell 1.5A Battery Charger with 20mA Termination and 1A Boost Operation datasheet (Rev. F) PDF | HTML 10 Feb 2025
Application note High-Efficiency Charging for TWS Using a 2-Pin Interface Application Report (Rev. A) PDF | HTML 16 Mai 2023
Application note Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers PDF | HTML 10 Nov 2022
User guide BQ25611D, BQ25619 (BMS025) Evaluation Module User's Guide (Rev. C) PDF | HTML 01 Jul 2022
Technical article Benefits of rechargeable batteries in real-time location system trackers PDF | HTML 10 Aug 2020
Technical article Overcoming common design challenges in an UV sterilization box system PDF | HTML 27 Jul 2020
Application brief How to Design Tiny, Long-Lasting, and Safe Battery Products With Switching Charg 29 Aug 2019
Technical article Overcoming design challenges for low quiescent current in small, battery-powered d PDF | HTML 29 Aug 2019

Design und Entwicklung

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Evaluierungsplatine

BQ25619EVM — I2C-gesteuertes Evaluierungsmodul für 1-zellige 3-A-Abwärts-Akkuladegeräte mit Power Path und 1,2-A-

Das BQ25619-Evaluierungsmodul (EVM) wird zum Evaluieren des BQ25619-Bausteins verwendet. Hierbei handelt es sich um ein 3-A-Einzelzellen-Batterieladegerät, das für Powerbank-Anwendungen in tragbaren Designs mit geringem Stromverbrauch optimiert ist. Der synchron-Aufwärtsbetrieb und der (...)
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Treiber oder Bibliothek

BQ256XXSW-LINUX — Linux-Treiber für BQ256XX

Der Linux-Treiber unterstützt die Bausteinfamilie BQ256XX der I2C-gesteuerten, 1-zelligen Switch-Mode-Batterielademanagement- und Systemleistungspfadmanagement-ICs. Der Linux-Treiber unterstützt die Kommunikation über den I2C-Bus und ist mit dem Subsystem der Stromversorgung verbunden.

(...)

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