●The bq24600 is a highly integrated Li-ion or Li-polymer switch-mode battery-charge controller. It offers a constant-frequency synchronous PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, and charge status monitoring,
●The bq24600 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum level. An internal charge timer provides a safety backup. The bq24600 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.
● 1.2-MHz NMOS-NMOS Synchronous Buck Converter
● Stand-Alone Charger Support for Li-Ion or Li-Polymer
● 5-V – 28-V VCC Input Voltage Range and Supports
●1S-6S 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
● Integration
● Internal Loop Compensation
● Internal Soft Start
● Safety
● Input Overvoltage Protection
● Battery Thermistor Sense Hot/Cold Charge Suspend
● Battery Detection
● Built-In 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 Power Converter
● 30-ns Driver Dead-Time and 99.5% Max. Effective Duty Cycle
● 16-Pin 3.5-mm × 3.5-mm QFN package
● Energy Star Low Quiescent Current Iq
● < 15-µA Off-State Battery Discharge Current
● < 1.5-mA Off-State Input Quiescent Current
