The MIC4721YMMTR is a high-efficiency synchronous boost regulator from Micrel, now Microchip Technology. It is designed to provide a regulated output voltage from a lower input voltage. This regulator integrates a low RDS(ON) MOSFET switch to minimize conduction losses and achieve high efficiency. It also features internal compensation, simplifying the design process and reducing external component count. It operates at high frequency, allowing for smaller external components.

Applications

• Portable Devices: Powering displays, camera modules, and other peripherals in smartphones, tablets, and portable media players.
• Battery-Powered Equipment: Providing a stable voltage supply for devices like barcode scanners, handheld instruments, and wireless sensors.
• LED Backlighting: Driving LED strings in LCD displays and other lighting applications.
• Power Banks: Boosting the voltage from a single-cell Li-Ion battery to a regulated 5V output.
• Bias Power Supplies: Creating a stable bias voltage for various electronic circuits.

Features

• High Efficiency: Up to 90% efficiency, minimizing power losses and extending battery life.
• Synchronous Rectification: Integrated synchronous rectifier eliminates the need for an external Schottky diode, further improving efficiency.
• Internal Compensation: Simplifies design and reduces external component count.
• Low Quiescent Current: Minimizes power consumption in standby mode.
• Input Voltage Range: Wide input voltage range allows for operation with various battery types and input sources.
• Output Voltage Adjustable: Adjustable output voltage allows for flexibility in design.
• Over-Voltage Protection (OVP): Protects the device and the load from over-voltage conditions.
• Short-Circuit Protection (SCP): Protects the device from damage due to short circuits.
• Thermal Shutdown: Protects the device from overheating.

Benefits

• Extended Battery Life: High efficiency minimizes power losses, resulting in longer battery life for portable devices.
• Simplified Design: Internal compensation and integrated features reduce design complexity and time-to-market.
• Reduced Component Count: Integrated synchronous rectifier and internal compensation minimize the need for external components, saving space and cost.
• Robust Protection: Over-voltage protection, short-circuit protection, and thermal shutdown ensure reliable operation and protect the device from damage.
• Wide Operating Range: Wide input voltage range allows for operation with various battery types and input sources.

The MIC4721YMMTR is available in a small package. It operates over a wide temperature range. It is suitable for a wide range of applications requiring a high-efficiency boost regulator.