BQ24620中文资料适用于磷酸锂电池的独立 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 bq24620 device 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, and charge status monitoring.

The bq24620 charges the battery in three phases: preconditioning, constant current, and constant voltage.

特性 Features

• 300-kHz NMOS-NMOS Synchronous Buck Converter
• 5-V to 28-V VCC Operating Range, Supports 1 to 7 Battery Cells
• ±0.5% Charge Voltage Accuracy
• Integration
• Internal Soft Start
• Safety
• Battery Thermistor Sense Suspend Charge at Hot/Cold Charge Suspend and Automatically ICHARGE/8 at WARM/COOL
• Built-In Safety Timer
• Battery Short Protection
• Thermal Shutdown
• Status Outputs
• Charger Operation Status
• Charge Enable Pin
• 30-ns Driver Dead Time and 99.95% Maximum Effective Duty Cycle
• Energy Star Low Iq
• APPLICATIONS
• Personal Digital Assistants
• Industrial and Medical Equipment
• Netbooks, Mobile Internet Devices, and Ultramobile PCs

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