The RT9542OCE is a highly integrated single-cell Li-ion/Li-polymer battery charger IC manufactured by Richtek USA Inc. It's designed for portable applications where space and efficiency are critical. This device supports both USB and AC adapter power sources, offering versatile charging solutions for various devices.

Applications

• Portable media players
• Smartphones
• Tablets
• Wearable devices
• Low-power handheld devices

Features

• Integrated Power MOSFET: Reduces external component count and simplifies design.
• Programmable Charging Current: Allows flexible charging rate adjustments.
• USB and AC Adapter Input: Supports versatile power source options.
• Over Voltage Protection (OVP): Protects the battery from overvoltage conditions.
• Over Current Protection (OCP): Prevents excessive current flow during charging.
• Thermal Shutdown Protection: Protects the IC from overheating.

Benefits

• High Efficiency: Maximizes battery charging efficiency and reduces heat dissipation.
• Compact Solution: Minimizes board space requirements.
• Versatile Charging: Supports both USB and AC adapter power sources.
• Robust Protection: Provides comprehensive protection against overvoltage, overcurrent, and overheating.
• Simplified Design: Integrated features reduce external component count and simplify design.

Specifications

The RT9542OCE battery charger IC features a specific charging current range, allowing for flexible charging rate adjustments based on battery capacity and charging requirements. The integrated power MOSFET reduces external component count, minimizing board space and simplifying design. The IC is designed to operate within a specific voltage range and temperature range, ensuring reliable operation in a variety of environments. The overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown protection features provide comprehensive protection against common battery charging hazards.

The RT9542OCE is designed to automatically detect the power source (USB or AC adapter) and adjust the charging parameters accordingly. It also includes status indication features, providing feedback on the charging process. The combination of high efficiency, compact solution, versatile charging options, and robust protection makes the RT9542OCE an ideal choice for single-cell Li-ion/Li-polymer battery charging applications in portable devices.