The WM8350GEB/RVLRG is a highly integrated power management IC (PMIC) from Cirrus Logic, designed for use in portable and battery-powered applications. This PMIC integrates multiple power conversion and control functions into a single chip, allowing for efficient power delivery and management within a system. It is specifically designed to cater to the needs of advanced portable devices, reducing component count and board space while optimizing power efficiency.

Applications

• Smartphones
• Tablets
• Portable Navigation Devices (PNDs)
• Portable Media Players
• E-readers

Features

• Multiple DC-DC Converters: Includes several buck (step-down) converters and boost (step-up) converters to provide various voltage rails.
• Low Dropout (LDO) Regulators: Offers multiple LDOs for clean and stable power to sensitive analog and digital circuits.
• Battery Charger: Integrated battery charging circuitry for Lithium-Ion/Polymer batteries.
• Power Sequencing: Programmable power-up and power-down sequencing for controlled system initialization.
• Real-Time Clock (RTC): Integrated RTC with battery backup support.
• I2C Interface: Control and configuration via a standard I2C serial interface.
• Low Quiescent Current: Optimized for minimal power consumption in standby and idle modes.

Benefits

• Reduced BOM Cost: Integrated PMIC lowers the number of discrete components, thus reducing the overall bill of materials.
• Extended Battery Life: High efficiency DC-DC converters and low quiescent current extend the operational time of battery-powered devices.
• Simplified System Design: Integrating multiple power management functions simplifies the design process and reduces board space.
• Enhanced Reliability: Controlled power sequencing and protection features improve system reliability.
• Improved Thermal Management: Efficient power conversion minimizes heat generation.

Additional Details

The WM8350GEB/RVLRG provides a comprehensive power management solution for complex portable systems. The integrated DC-DC converters are designed for high efficiency across a wide range of load currents, optimizing power usage for different operating conditions. The LDO regulators provide clean power to noise-sensitive circuits, ensuring stable performance. The battery charger is designed to support various charging profiles and includes safety features to protect the battery. The programmable power sequencing ensures that the various voltage rails are enabled and disabled in the correct order, preventing system instability. The I2C interface allows for real-time monitoring and control of the PMIC’s functions. The integrated RTC allows the system to keep accurate time, even when the main power is off.

The specific voltage and current capabilities of the regulators and battery charger, as well as other detailed specifications, can be found in the WM8350GEB/RVLRG datasheet.