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Product details

Parameters

Number of series cells 1, 2, 3, 4, 5, 6, 7 Charge current (Max) (A) 10 Operating Vin (Max) (V) 28 Cell chemistry Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 1.8 Battery charge voltage (Max) (V) 26 Absolute Vin (safety rating) (Max) ((V)) 33 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IINDPM (Input current limit) Operating Vin (Min) (V) 5 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Battery charger ICs

Features

  • 300-kHz NMOS-NMOS Synchronous Buck
    Converter
  • Stand-Alone Charger Specifically for Lithium
    Phosphate
  • 5-V–28-V VCC Input Operating Range,
    Supports 1–7 Battery Cells
  • 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 (DPM)
  • Safety Protection
    • Input Overvoltage Protection
    • Battery Thermistor Sense Suspend Charge at
      Hot/Cold and Automatically ICHARGE/8 at
      Hot/Cold or Warm/Cool
    • 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 99.95% Max.
    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
  • APPLICATIONS
    • Power Tool and Portable Equipment
    • Personal Digital Assistants
    • Handheld Terminals
    • Industrial and Medical Equipment
    • Netbook, Mobile Internet Device, and Ultra-Mobile
      PC

All other trademarks are the property of their respective owners

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Description

The bq24630 is a highly integrated lithium phosphate 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 bq24630 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 bq24630 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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet bq24630 Standalone Synchronous Switched-Mode Lithium Phosphate Battery Charger With System Power Selector and Low Iq datasheet (Rev. B) Jul. 31, 2015
Application notes BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers Dec. 31, 2019
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
Technical articles Summertime and the livin' is easy Jun. 20, 2014
User guides bq2461x/bq2463x (HPA422A) Multi-Cell Synchronous Switch-Mode Charger (Rev. A) Jul. 27, 2010

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
149
Description

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 with (...)

Features
  • Evaluation Module For bq2461x/bq2463x
  • High Efficiency Synchronous Buck Charger
  • User-programmable up to 26V Battery Voltage
  • AC Adapter Operating Range 5V to 28V
  • LED Indication for Control and Status Signals
  • Test Points for Key Signals Available for Testing Purpose. Easy Probe Hook-up.
  • Jumpers Available (...)

Design tools & simulation

CALCULATION TOOLS Download
SLUC175D.ZIP (782 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RGE) 24 View options

Ordering & quality

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