BQ24630RGET IC CHIPS Stand-Alone Synchronous Switch-Mode Lithium Phosphate Battery Charger
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Detailed Product Description
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BQ24630RGET IC CHIPS FEATURES 300 kHz NMOS-NMOS Synchronous Buck Converter Stand-alone Charger Specifically for Lithium Phosphate 5V–28V VCC Input Operating Range, Support 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 Over-Voltage Protection – Battery Thermistor Sense Suspend Charge at Hot/Cold and
Automatically I CHARGE/8 at Hot/Cold or Warm/Cool – Battery Detection – Reverse Protection Input FET – Programmable Safety Timer – Charge Over-Current Protection – Battery Short Protection – Battery Over-Voltage Protection – Thermal Shutdown Status Outputs – Adapter Present – Charger Operation Status Charge Enable Pin 6V Gate Drive for Synchronous
Buck Converter 30ns Driver Dead-time and 99.95% Max Effective Duty Cycle 24-Pin 4×4-mm 2QFN Package Energy Star Low Quiescent Current Iq– < 15mA 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 DESCRIPTION The bq24630 is highly integrated switch-mode battery charge
controller designed specifically for Lithium Phosphate
battery. It offers a constant-frequency synchronous PWM controller with high
accuracy 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 IC STOCK
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