The RT9371-MG is a highly integrated Power Management IC (PMIC) designed by Richtek. It targets applications requiring a compact, efficient, and versatile power solution, commonly found in portable devices, wearables, and IoT products. This PMIC combines multiple power conversion functions, battery charging capabilities, and system management features into a single chip, optimizing space and simplifying design. The RT9371-MG’s advanced architecture ensures low power consumption and high performance, making it suitable for demanding applications.

Applications

• Wearable Electronics (Smartwatches, Fitness Trackers)
• Portable Media Players
• Internet of Things (IoT) Devices
• Handheld Medical Devices
• Low-Power Consumer Electronics

Features

• Multi-Channel DC-DC Converters: Integrated high-efficiency buck converters provide power to core components such as the processor, memory, and peripherals.
• Integrated Battery Charger: Supports Lithium-ion and Lithium-polymer batteries, with programmable charging parameters for optimized charging profiles.
• Low Quiescent Current: Minimizes power consumption in standby and idle modes, extending battery life.
• I2C Interface: Enables flexible configuration and monitoring of power rails, charging parameters, and protection features.
• Protection Features: Includes over-voltage protection (OVP), over-current protection (OCP), short-circuit protection (SCP), and over-temperature protection (OTP).
• Compact Package: Available in a small form factor, QFN package to save board space.

Benefits

• Optimized Power Efficiency: High-efficiency DC-DC converters and low quiescent current minimize power loss and extend battery life.
• Reduced Board Space: Integration of multiple power functions reduces the need for discrete components, saving valuable PCB area.
• Flexible Configurability: The I2C interface allows for easy configuration and monitoring of key parameters, tailoring the PMIC to specific application requirements.
• Enhanced System Reliability: Comprehensive protection features ensure safe and reliable operation under various operating conditions.
• Simplified System Design: Integrated solution simplifies power management design, reducing design complexity and time-to-market.

The RT9371-MG integrates multiple high-efficiency buck converters to provide power to various system components. These converters are designed to maintain high efficiency across a wide range of load conditions, ensuring optimal power delivery. The integrated battery charger supports Lithium-ion and Lithium-polymer batteries and allows for programmable charging parameters. The I2C interface enables flexible configuration and monitoring, providing the ability to fine-tune power settings for specific applications. The comprehensive protection features include over-voltage protection, over-current protection, short-circuit protection, and over-temperature protection, ensuring the PMIC operates safely under diverse operating conditions.

Technical Specifications: The input voltage range is typically between 2.7V and 5.5V. Specific output voltages and currents of the DC-DC converters are configurable via the I2C interface. The operating temperature range is generally from -40°C to +85°C, suitable for a wide range of environments.