Product details

Number of series cells 1, 2, 3, 4, 5, 6 Charge current (Max) (A) 10 Operating Vin (Max) (V) 28 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 2.1 Battery charge voltage (Max) (V) 26 Absolute Vin (safety rating) (Max) ((V)) 33 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IINDPM (Input current limit), Power Path Operating Vin (Min) (V) 5 Rating Catalog
Number of series cells 1, 2, 3, 4, 5, 6 Charge current (Max) (A) 10 Operating Vin (Max) (V) 28 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 2.1 Battery charge voltage (Max) (V) 26 Absolute Vin (safety rating) (Max) ((V)) 33 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IINDPM (Input current limit), Power Path Operating Vin (Min) (V) 5 Rating Catalog
VQFN (RGE) 24 16 mm² 4 x 4
  • Battery Thermistor Sense for JEITA Guideline
    Compatible Charger
  • 600-kHz NMOS-NMOS Synchronous Buck
    Converter
  • Stand-Alone Charger Support for Li-Ion or Li-
    Polymer
  • 5-V–28-V VCC Input Operating Range and
    Supports 1 to 6 Battery Cells
  • Up to 10-A Charge Current and Adapter Current
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
  • Integration
    • Automatic System Power Selection From
      Adapter or Battery
    • Internal Loop Compensation
    • Internal Soft-Start
    • Dynamic Power Management
  • Safety Protection
    • Input Overvoltage Protection
    • Battery Detection
    • Reverse Protection Input FET
    • Programmable Safety Timer
    • Charge Overcurrent Protection
    • Battery Short Protection
    • Battery Overvoltage Protection
    • Thermal Shutdown
  • Status Outputs
    • Adapter Present
    • Charger Operation Status
  • Charge Enable Pin
  • 6-V Gate Drive for Synchronous Buck Converter
  • 30-ns Driver Dead-Time and 99.5% Maximum
    Effective Duty Cycle
  • 24-Pin, 4-mm × 4-mm QFN Package
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current
  • Battery Thermistor Sense for JEITA Guideline
    Compatible Charger
  • 600-kHz NMOS-NMOS Synchronous Buck
    Converter
  • Stand-Alone Charger Support for Li-Ion or Li-
    Polymer
  • 5-V–28-V VCC Input Operating Range and
    Supports 1 to 6 Battery Cells
  • Up to 10-A Charge Current and Adapter Current
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
  • Integration
    • Automatic System Power Selection From
      Adapter or Battery
    • Internal Loop Compensation
    • Internal Soft-Start
    • Dynamic Power Management
  • Safety Protection
    • Input Overvoltage Protection
    • Battery Detection
    • Reverse Protection Input FET
    • Programmable Safety Timer
    • Charge Overcurrent Protection
    • Battery Short Protection
    • Battery Overvoltage Protection
    • Thermal Shutdown
  • Status Outputs
    • Adapter Present
    • Charger Operation Status
  • Charge Enable Pin
  • 6-V Gate Drive for Synchronous Buck Converter
  • 30-ns Driver Dead-Time and 99.5% Maximum
    Effective Duty Cycle
  • 24-Pin, 4-mm × 4-mm QFN Package
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current

The bq2461x device is a highly integrated, Japan Electronic Information Technology Association (JEITA) guideline-compatible, Li-ion or Li-polymer switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring

The bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq2461x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

The bq2461x device is a highly integrated, Japan Electronic Information Technology Association (JEITA) guideline-compatible, Li-ion or Li-polymer switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring

The bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq2461x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

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Technical documentation

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Type Title Date
* Data sheet bq24616 JEITA Guideline Compatible Stand-Alone Synchronous Switched-Mode Li-Ion or Li-Polymer Battery Charger With System Power Selector and Low Iq datasheet (Rev. C) 30 Jun 2015
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 31 Dec 2019
Technical article When to use rechargeable batteries in small battery applications 01 Oct 2019
Technical article Should I use a linear charger or a switching charger? 31 Oct 2015
Technical article Summertime and the livin' is easy 20 Jun 2014
User guide bq2461x/bq2463x (HPA422A) Multi-Cell Synchronous Switch-Mode Charger (Rev. A) 27 Jul 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ24616EVM — Evaluation Module for BQ24616 Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer

The bq2461x is highly integrated Li-ion or Li-polymer switch-mode battery charge controllers. The bq2463x is highly integrated switch-mode battery charge controllers designed specifically to charge Lithium Phosphate battery chemistries. They offer a constant-frequency synchronous PWM controller (...)

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Calculation tool

bq246xx Calculation Tool V1.5 (Rev. D)

SLUC175D.ZIP (782 KB)
Package Pins Download
VQFN (RGE) 24 View options

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