Microchip Technology's MIC2775-28BM5 Supervisory Circuit

The MIC2775-28BM5 is a highly reliable supervisory circuit designed by Microchip Technology to monitor power supplies in digital systems. It is an essential component for systems that require a high degree of operational stability and accuracy. The device ensures that the system's microprocessor, or other critical circuitry, is reset to a known state in the event of a power failure or dip below a predetermined threshold.

This supervisory circuit comes in a compact SOT-23-5 package, making it suitable for space-constrained applications. It operates over a wide voltage range and is specifically set for a threshold voltage of 2.8V, making it an ideal choice for low-voltage operations. The MIC2775-28BM5 provides an active-low reset signal, which remains asserted until the supply voltage reaches the designated threshold, ensuring proper system reboot and initialization.

Key features of the MIC2775-28BM5 include:

• Programmable Delay: It offers a programmable delay time through an external capacitor, which allows designers to customize the reset assertion time to match specific system requirements.
• Low Quiescent Current: The device is designed for power-sensitive applications, with a low quiescent current that minimizes power consumption during operation.
• Manual Reset Capability: An additional feature of the MIC2775-28BM5 is the ability to manually trigger a system reset, providing an extra layer of system control and security.
• High Accuracy: With tight threshold accuracy, the device ensures reliable operation by preventing premature or delayed system resets due to threshold voltage deviations.
• Wide Operating Temperature Range: The supervisory circuit is functional over a broad temperature range, making it suitable for industrial and automotive applications where extreme conditions may be encountered.

The MIC2775-28BM5 is an excellent choice for a variety of applications, including portable electronics, embedded systems, and any other system that requires precise monitoring of the power supply voltage. Its robust feature set ensures that it can meet the stringent requirements of modern electronic systems, providing both safety and stability to maintain system integrity.