The RT9361ACE is a highly integrated single-cell Li-ion/Li-polymer battery charger IC from Richtek USA Inc. This device is designed to provide a compact and efficient charging solution for portable applications such as smartphones, tablets, and other battery-powered devices. It integrates a synchronous buck converter, which provides high efficiency and minimizes heat dissipation during the charging process.

Applications:

• Smartphones
• Tablets
• Portable media players
• Power banks
• Bluetooth speakers

Features:

• Synchronous buck converter for high efficiency
• Input voltage range: 4.5V to 5.5V
• Programmable charging current up to 2A
• Integrated power MOSFETs
• Battery over-voltage protection
• Thermal protection
• Short-circuit protection
• LED indication for charging status
• Compact QFN package

Benefits:

• Fast and efficient battery charging
• Extended battery life due to optimized charging profile
• Reduced heat dissipation, improving system reliability
• Simplified design with integrated components
• Enhanced safety with multiple protection features
• Visual indication of charging progress
• Smaller PCB footprint due to compact package

Technical Specifications:

The RT9361ACE operates from an input voltage range of 4.5V to 5.5V and can deliver a charging current of up to 2A. It incorporates a synchronous buck converter, which provides high efficiency, typically around 90%. The device includes battery over-voltage protection, thermal protection, and short-circuit protection to ensure safe and reliable operation.

The charging current is programmable via an external resistor, allowing for flexibility in selecting the appropriate charging current for different battery capacities. The RT9361ACE also features LED indication for charging status, providing visual feedback to the user.

The RT9361ACE is available in a compact QFN package, making it suitable for space-constrained applications. Its high level of integration and comprehensive protection features make it an ideal choice for single-cell Li-ion/Li-polymer battery charging applications.