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BQ25910

ACTIVE

I2C 1cell 6A Three-Level buck battery charger for Parallel Charging Applications

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Data sheet

BQ25910

ACTIVE
Data sheet Order now

Product details

Number of series cells 1 Charge current (max) (A) 6 Vin (max) (V) 14 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.775 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C Features IC thermal regulation, IINDPM (Input current limit), Input OVP, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 6 Vin (max) (V) 14 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.775 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C Features IC thermal regulation, IINDPM (Input current limit), Input OVP, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 36 1.4000000000000001 mm² 1 x 1.4000000000000001
  • Parallel charger operation provides fast charging in dual charger configuration
  • High efficiency 750-kHz switch mode three-level buck parallel charger
    • Reduced ripple to support low profile inductor
    • 95.4% Charge efficiency at 1.5 A from 5-V input
    • 93.3% Charge efficiency at 3 A from 9-V input
    • Superior efficiency compared to traditional buck converter in compact form factor
  • Single Input to support USB input and adjustable high voltage adapters
    • Support 3.9-V to 14-V input voltage range with 20-V absolute maximum input voltage rating
    • Input current limit (500 mA to 3.6 A with 100-mA resolution) to support USB2.0 and USB 3.0 standard and high voltage adaptors
    • Maximum power tracking by input voltage limit (VINDPM) up to 14 V
  • Flexible I2C mode for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
    • Lossless charge current sensing without sense resistor
  • < 10-µA Low battery leakage current during stand-by mode
  • High accuracy
    • ±0.4% Charge voltage regulation
    • ±10% Charge current regulation
    • ±7.5% Input current regulation
    • Remote differential battery sensing
  • Safety
    • Thermal regulation and thermal shutdown
    • Input UVLO and overvoltage protection
    • Battery OVP
    • Input dynamic power management (DPM)
    • Charging safety timer
    • Flying capacitor short circuit protection
    • Output voltage short circuit protection
  • Available in 36-ball WCSP package
  • Parallel charger operation provides fast charging in dual charger configuration
  • High efficiency 750-kHz switch mode three-level buck parallel charger
    • Reduced ripple to support low profile inductor
    • 95.4% Charge efficiency at 1.5 A from 5-V input
    • 93.3% Charge efficiency at 3 A from 9-V input
    • Superior efficiency compared to traditional buck converter in compact form factor
  • Single Input to support USB input and adjustable high voltage adapters
    • Support 3.9-V to 14-V input voltage range with 20-V absolute maximum input voltage rating
    • Input current limit (500 mA to 3.6 A with 100-mA resolution) to support USB2.0 and USB 3.0 standard and high voltage adaptors
    • Maximum power tracking by input voltage limit (VINDPM) up to 14 V
  • Flexible I2C mode for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
    • Lossless charge current sensing without sense resistor
  • < 10-µA Low battery leakage current during stand-by mode
  • High accuracy
    • ±0.4% Charge voltage regulation
    • ±10% Charge current regulation
    • ±7.5% Input current regulation
    • Remote differential battery sensing
  • Safety
    • Thermal regulation and thermal shutdown
    • Input UVLO and overvoltage protection
    • Battery OVP
    • Input dynamic power management (DPM)
    • Charging safety timer
    • Flying capacitor short circuit protection
    • Output voltage short circuit protection
  • Available in 36-ball WCSP package

The BQ25910 is an integrated three-level switch-mode parallel battery charge management device for single cell Li-ion and Li-polymer batteries. Utilization of the three-level converter maintains highest switch-mode operation efficiency while reducing solution footprint and increasing power density. The device supports fast charging with high input voltage for a wide range of portable devices. The solution integrates reverse-blocking FET (QBLK), and four switching FETs (QHSA, QHSB, QLSB, QLSA). The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The BQ25910 is an integrated three-level switch-mode parallel battery charge management device for single cell Li-ion and Li-polymer batteries. Utilization of the three-level converter maintains highest switch-mode operation efficiency while reducing solution footprint and increasing power density. The device supports fast charging with high input voltage for a wide range of portable devices. The solution integrates reverse-blocking FET (QBLK), and four switching FETs (QHSA, QHSB, QLSB, QLSA). The I2C serial interface with charging and system settings makes the device a truly flexible solution.
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Technical documentation

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* Data sheet BQ25910 I2C Controlled 6-A Three-Level Switch Mode, Single-Cell Parallel Battery Charger for Fast Charging datasheet (Rev. B) PDF | HTML 29 Jul 2019
Technical article How to increase charging current while shrinking overall solution size for portabl PDF | HTML 01 Mar 2018
EVM User's guide bq25910EVM-854 Evaluation Module User's Guide (Rev. A) 01 Mar 2018
Analog Design Journal Faster, cooler charging with dual chargers 30 Oct 2015

Design & development

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Evaluation board

BQ25910EVM-854 — bq25910 Evaluation Module for Three-Level Single-Cell Slave Charger

The bq25910 is an integrated three-level switch-mode slave battery charge management device for single cell Li-ion and Li-polymer batteries. Utilization of the three-level converter reduces solution footprint and volume while maintaining highest switch-mode operation efficiency.
User guide: PDF
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Calculation tool

SLVC715 — bq25910 Calculation Tool

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Battery charger ICs
BQ25910 — I2C 1cell 6A Three-Level buck battery charger for Parallel Charging Applications
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DSBGA (YFF) 36 Ultra Librarian
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