BQ24630中文资料适用于磷酸铁锂电池、具有系统功率的独立 1 至 7 节降压电池充电控制器数据手册TI规格书

描述 Description

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.

特性 Features

• 300-kHz NMOS-NMOS Synchronous Buck Converter
• 5-V–28-V VCC Input Operating Range, Supports 1–7 Battery Cells
• ±0.5% Charge Voltage Accuracy
• ±3% Adapter Current Accuracy
• Integration
• Internal Loop Compensation
• Dynamic Power Management (DPM)
• Safety Protection
• Battery Thermistor Sense Suspend Charge at Hot/Cold and Automatically ICHARGE/8 at Hot/Cold or Warm/Cool
• Reverse Protection Input FET
• Charge Overcurrent Protection
• Battery Overvoltage Protection
• Status Outputs
• Charger Operation Status
• Charge Enable Pin
• 30-ns Driver Dead Time and 99.95% Max. Effective Duty Cycle
• Energy Star Low Quiescent Current Iq
• APPLICATIONS
• Personal Digital Assistants
• Industrial and Medical Equipment
• Netbook, Mobile Internet Device, and Ultra-Mobile PC

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