The RT9535BGQW(Z00) is a battery charger IC manufactured by Richtek USA Inc., designed for single-cell Li-ion/Li-polymer batteries. It offers a compact and efficient solution for charging portable devices and battery-powered applications.

Applications

• Portable devices (smartphones, tablets, wearables)
• Power banks
• Bluetooth headsets
• MP3 players
• Single-cell Li-ion/Li-Polymer battery chargers

Features

• Single-cell Li-ion/Li-Polymer battery charger
• Constant current/constant voltage (CC/CV) charging
• Programmable charging current
• Overvoltage protection (OVP)
• Short-circuit protection (SCP)
• Thermal regulation
• Input overvoltage protection (Input OVP)
• Reverse blocking protection
• Small QFN package

Benefits

• Efficient and reliable charging of single-cell Li-ion/Li-Polymer batteries.
• Programmable charging current allows for customization based on battery capacity and charging requirements.
• Comprehensive protection features (OVP, SCP, Thermal Regulation, Input OVP, Reverse Blocking) ensure safe and reliable operation.
• Compact size facilitates integration into space-constrained portable devices.

Additional Details

The RT9535BGQW(Z00) utilizes a constant current/constant voltage (CC/CV) charging algorithm, which is the standard charging method for Li-ion/Li-Polymer batteries. The charging current can be programmed using an external resistor, allowing for flexibility in adapting to different battery sizes and charging requirements. The overvoltage protection feature prevents the battery from being overcharged, which can damage the battery and reduce its lifespan. Short-circuit protection protects the charger and the battery from damage in the event of a short circuit. Thermal regulation limits the charging current when the IC temperature rises to a certain level, preventing overheating. Input overvoltage protection protects the charger from damage due to excessive input voltage. Reverse blocking protection prevents current from flowing back into the charger from the battery. Refer to the manufacturer's datasheet for detailed specifications, including charging current range, input voltage range, and protection thresholds. Proper layout and thermal management are important for optimal performance and reliability.