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BQ24618

AKTIV

Eigenständiger 1–6-Zellen-Abwärts-Batterie-Laderegler mit USB-Anschluss und 5 V–28 V-Eingang

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Datenblatt

BQ24618

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 10 Vin (max) (V) 28 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Absolute max Vin (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), Power Path Vin (min) (V) 4.7 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 10 Vin (max) (V) 28 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Absolute max Vin (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), Power Path Vin (min) (V) 4.7 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • USB-Friendly 4.7-V to 28-V Input Operating
    Range
  • Stand-Alone Charge Controller to Support 1 to 6
    Li-Ion or Li-Polymer Battery Cells
  • Up to 10-A Charge Current and Adapter Current
  • 600-kHz NMOS-NMOS Synchronous Buck
    Converter
  • 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 Thermistor Sense Hot/Cold Charge
      Suspend
    • 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
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current
  • APPLICATIONS
    • Tablet PCs
    • Smart Phones
    • Portable Media Players, Navigation Devices,
      Notebooks and Ultra-Mobile PCs
    • Personal Digital Assistants
    • Handheld Terminals
    • Industrial and Medical Equipment

All other trademarks are the property of their respective owners
  • USB-Friendly 4.7-V to 28-V Input Operating
    Range
  • Stand-Alone Charge Controller to Support 1 to 6
    Li-Ion or Li-Polymer Battery Cells
  • Up to 10-A Charge Current and Adapter Current
  • 600-kHz NMOS-NMOS Synchronous Buck
    Converter
  • 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 Thermistor Sense Hot/Cold Charge
      Suspend
    • 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
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current
  • APPLICATIONS
    • Tablet PCs
    • Smart Phones
    • Portable Media Players, Navigation Devices,
      Notebooks and Ultra-Mobile PCs
    • Personal Digital Assistants
    • Handheld Terminals
    • Industrial and Medical Equipment

All other trademarks are the property of their respective owners

The bq24618 device is highly integrated Li-ion or Li-polymer switched-mode battery-charge controller. The bq24618 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 bq24618 operates from either a USB port or AC adapter and supports charge currents up to 10 A. The device 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 for charge termination. The bq24618 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 bq24618 device is highly integrated Li-ion or Li-polymer switched-mode battery-charge controller. The bq24618 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 bq24618 operates from either a USB port or AC adapter and supports charge currents up to 10 A. The device 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 for charge termination. The bq24618 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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Technische Dokumentation

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Typ Titel Datum
* Data sheet bq24618 Stand-Alone USB-Friendly Synchronous Switched-Mode Li-Ion or Li-Polymer Battery Charger With System Power Selector and Low Iq datasheet (Rev. B) PDF | HTML 29 Apr 2015
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 31 Dez 2019

Design und Entwicklung

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Berechnungstool

SLUC175 — bq246xx Calculation Tool V1.5

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