The RT9541CCE is a highly integrated single-cell Li-ion/Li-polymer battery charger manufactured by Richtek USA Inc. This charger is designed to efficiently and safely charge single-cell batteries in a wide range of portable applications. It supports both USB and AC adapter power sources and features advanced protection mechanisms to ensure battery safety.

Applications:

• Smartphones and Tablets: Used as a battery charger for single-cell Li-ion/Li-polymer batteries.
• Portable Media Players: Manages battery charging in portable audio and video players.
• Wearable Devices: Integrated into smartwatches, fitness trackers, and other wearable devices to charge batteries.
• Bluetooth Speakers: Charges the battery in portable Bluetooth speakers.
• Power Banks: Used in power banks to charge the internal battery.

Features:

• USB and AC Adapter Compatibility: Supports charging from both USB ports and AC adapters.
• Constant Current/Constant Voltage (CC/CV) Charging: Accurately controls charging current and voltage to optimize battery charging.
• Overvoltage Protection (OVP): Protects the battery from overvoltage conditions.
• Overcurrent Protection (OCP): Protects the battery from excessive charging current.
• Thermal Protection: Prevents overheating during charging.

Benefits:

• Safe and Reliable Charging: Provides safe and reliable charging for Li-ion/Li-polymer batteries.
• Fast Charging: Supports fast charging to reduce charging time.
• Wide Input Voltage Range: Accommodates a wide range of input voltages from USB and AC adapters.
• Compact Size: Available in small package options to minimize board space.
• Simplified Design: Requires minimal external components for a simplified design.

The RT9541CCE typically features a programmable charging current and voltage to accommodate various battery sizes and chemistries. It often includes a pre-charge function for deeply discharged batteries and an end-of-charge termination function to prevent overcharging. Furthermore, it may incorporate features like automatic recharge and battery temperature sensing for enhanced safety and performance. The RT9541CCE is a reliable and efficient solution for single-cell Li-ion/Li-polymer battery charging applications.