Microchip Buck Boost Switching Regulator 5.5V 2MHz FTQFN 8-Pin MIC2877-4.75YFT-TR

Microchip MIC2877-4.75YFT-TR Buck Boost Switching Regulator is a high-efficiency, compact 2MHz synchronous boost regulator designed for voltage conversion applications within an input range of 2.5V to 5.5V. Housed in a small FTQFN 8-pin surface mount package measuring 2mm x 2mm x 0.5mm, this device integrates a 6.5A typical switch capable of delivering up to 2A continuous output current at 3V input and 5V output.

The MIC2877 incorporates a bidirectional true load disconnect feature that eliminates leakage current between input and output when the device is disabled, improving startup performance and protecting the input supply. It boasts an ultra-fast transient response and controlled pre-charge current limit during startup, ensuring stable voltage regulation under dynamic load changes.

Robust protection mechanisms include overvoltage protection (OVP), undervoltage lockout (UVLO), overcurrent protection, and thermal shutdown, enhancing reliability in industrial and commercial electronic designs.

The device’s low quiescent current of 125μA minimizes power consumption in standby mode. Internal compensation allows simplified external circuitry design. A power good (PG) output pin provides system monitoring capability.

Typical industrial and laboratory applications include battery-powered instruments, portable electronics, and embedded systems requiring efficient voltage regulation and power management. This regulator is suitable for use within temperature ranges up to 85°C and is designed for surface mounting on compact PCBs.

Operates over an input voltage range from 2.5V to 5.5V. Features a 2MHz synchronous boost switching frequency for efficient voltage regulation. Delivers up to 6.5A peak current limit with a typical 2A continuous output current at VIN = 3V and VOUT = 5V.

Includes bidirectional true load disconnect function to prevent leakage current when disabled. Offers fully integrated protection features including overvoltage protection, undervoltage lockout, overcurrent protection, and thermal shutdown.

Compact dimensions of 2mm x 2mm x 0.5mm height in a surface mount FTQFN package. Low quiescent current of 125 μA for power-efficient operation. Internal compensation and power good output support system monitoring. Designed for reliable operation up to 85°C maximum temperature.

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