MIC841NYC5-TR: Precision High-Voltage Monitoring with Open-Drain Flexibility

The MIC841NYC5-TR represents a critical advancement in the realm of high-voltage comparators, offering designers a robust and highly versatile solution for system monitoring and protection circuits. This device is engineered to operate with input voltages up to 40V, far exceeding the capabilities of standard logic-level comparators, making it an ideal choice for automotive, industrial, and telecom applications where voltage rails can be noisy and widely variable.

A defining feature of this comparator is its open-drain output configuration. This provides exceptional flexibility, allowing the output to be pulled up to a voltage rail completely independent of the chip's own supply voltage (VDD). This is crucial for level-shifting applications, such as when a 5V-based microcontroller needs to monitor a 12V or 24V system rail. The open-drain output can be pulled up to the MCU's logic level, ensuring safe and reliable communication without the risk of overvoltage damage.

The MIC841NYC5-TR is designed for precision. It boasts a low input offset voltage, which minimizes errors when comparing voltages near the reference point, ensuring accurate detection thresholds. Furthermore, it consumes a very low quiescent current, typically around 3.5 µA. This ultra-low power consumption is essential for battery-powered or always-on applications where energy efficiency is paramount. The device incorporates built-in hysteresis, which prevents output oscillation when the input signal is near the trigger threshold in noisy environments, enhancing system stability without requiring external components.

Typical applications are extensive and critical for system integrity. They include:

Over-voltage and Under-voltage Protection: Safely shutting down systems when supply rails exceed or fall below predefined limits.

Level Translation: Interfacing high-voltage signals to low-voltage microcontrollers.

Window Comparators: Monitoring whether a voltage stays within a specified range.

Battery Monitoring: Checking cell voltages in portable equipment and energy storage systems.

ICGOO In summary, the MIC841NYC5-TR is an exceptionally versatile and robust high-voltage comparator. Its high 40V input capability, ultra-low power consumption, and highly flexible open-drain output make it a superior choice for designing reliable monitoring and protection circuits in demanding electrical environments.

Keywords: High-Voltage Comparator, Open-Drain Output, Low Power Consumption, Over-Voltage Protection, Level Shifting