BQ24618RGET

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BQ24618RGET

Stand-Alone USB-Friendly Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger

Packaging

Package | PIN: RGE | 24
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $5.32
10-24 $4.79
25-99 $4.47
100-249 $4.01
250-499 $3.74
500-749 $3.26
750-999 $2.82
1000+ $2.76

Features

  • 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

Texas Instruments  BQ24618RGET

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.