The MC34717 is a highly integrated power management integrated circuit (PMIC) from NXP Semiconductors (formerly Freescale). It's designed to provide efficient power solutions for a variety of applications, particularly those requiring multiple voltage rails and sophisticated power control.

Applications

• Portable devices
• Handheld computers
• Tablets
• Smartphones
• Embedded systems requiring multiple power rails

Features

• Multiple buck converters for core, memory, and I/O power
• LDO regulators for low-noise analog supplies
• Integrated battery charger
• Power path management
• I2C interface for control and monitoring
• Over-voltage, over-current, and over-temperature protection
• Programmable output voltages and current limits
• Dynamic voltage scaling (DVS) support
• Low quiescent current for extended battery life

Benefits

• High Efficiency: The integrated buck converters and LDOs are designed for high efficiency, minimizing power loss and extending battery life.
• Reduced Component Count: By integrating multiple power management functions into a single chip, the MC34717 reduces the number of external components required, saving board space and cost.
• Flexibility: The programmable output voltages and current limits allow the PMIC to be tailored to specific application requirements.
• Robust Protection: The built-in protection features ensure reliable operation and prevent damage to the system in case of faults.
• Simplified Design: The I2C interface allows for easy control and monitoring of the PMIC, simplifying system design and debugging.
• Dynamic Voltage Scaling: Supports DVS, optimizing power consumption based on system workload.

Additional Details

The MC34717 typically operates from a single Li-Ion battery input. The buck converters are synchronous, ensuring high efficiency even at low output voltages. The LDO regulators provide clean and stable power for sensitive analog circuitry. The integrated battery charger supports various charging profiles. The PMIC is available in a compact QFN package. Software libraries and reference designs are available to facilitate integration into various platforms.