●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.
● 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
