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BQ24616 데이터시트 - Texas Instruments

BQ24616 JEITA Guideline Compatible Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq TI
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The bq24616 is highly integrated, JEITA (Japan Electronic Information Technology Association) guideline compatible, Li-ion or Li-polymer switch-mode battery charge controller. It 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.

• Battery Thermistor Sense for JEITA Guideline Compatible Charger
• 600 kHz NMOS-NMOS Synchronous Buck Converter
• Stand-alone Charger Support for Li-Ion or Li-Polymer
• 5 V–28 V VCC Input Operating Range and Supports 1-6 Battery Cells
• Up to 10A Charge Current and Adapter Current
• 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 Over-Voltage Protection
    – 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
• 6 V Gate Drive for Synchronous Buck Converter
• 30 ns Driver Dead-time and 99.5% Max Effective Duty Cycle
• 24-pin, 4×4-mm2 QFN Package
• Energy Star Low Quiescent Current Iq
    – < 15 µA Off-State Battery Discharge current
    – < 1.5 mA Off-State Input Quiescent Current

• Netbook, Mobile Internet Device and Ultra-Mobile PC
• Industrial and Medical Equipment
• Personal Digital Assistants
• Handheld Terminals
• Portable Equipment

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