Applications

• Smartphones
• Tablets
• Portable Media Players
• Wearable Devices
• Low-Power IoT Devices

Features

• Single-Cell Li-Ion/Li-Polymer Charger: Supports charging of single-cell Lithium-ion and Lithium-polymer batteries.
• System Power Path Management: Allows the system to operate even when the battery is deeply discharged or removed.
• USB and AC Adapter Support: Compatible with both USB and AC adapter power sources.
• Input Current Limit: Prevents overloading of the USB or AC adapter power source.
• Over-Voltage Protection (OVP): Protects the battery from over-voltage conditions.
• Over-Temperature Protection (OTP): Protects the device from over-temperature conditions.
• Short-Circuit Protection (SCP): Protects the device from short-circuit conditions.

Benefits

• Simplified Charging Solution: Highly integrated design simplifies battery charging implementation.
• Flexible Power Source Options: Supports both USB and AC adapter power sources.
• Enhanced System Reliability: Comprehensive protection features ensure safe and reliable charging.
• Improved Battery Life: Optimized charging profiles help to extend battery life.
• Seamless System Operation: System power path management ensures continuous system operation.

The RT9401B provides a complete charging solution for single-cell Lithium-ion and Lithium-polymer batteries. It supports both USB and AC adapter power sources, making it versatile for a wide range of applications. The input current limit feature prevents overloading of the power source, while the over-voltage, over-temperature, and short-circuit protection features ensure safe and reliable charging. The system power path management feature allows the system to operate even when the battery is deeply discharged or removed, providing seamless system operation. The charger also includes optimized charging profiles to help extend battery life.

Technical Specifications: Input voltage range typically spans from 4.5V to 5.5V. Charging current is programmable. The operating temperature range is generally from -40°C to +85°C, making it suitable for a wide range of environmental conditions.