NCP45492XMNTWG

Power Supply Controllers, Monitors Overview

The NCP45492XMNTWG is a precision power monitoring integrated circuit manufactured by onsemi. It integrates four independent voltage bus monitors and four high-side current shunt monitors within a single package. The device supports a supply voltage range up to 26V, enabling operation in various industrial and computing power distribution architectures. It provides simultaneous measurement of rail voltages and load currents with high accuracy, facilitating comprehensive system health monitoring and protection.

Power Supply Controllers, Monitors Feature Summary

• Integrates four independent channels for simultaneous voltage bus and high-side current shunt monitoring
• Features advanced digital filtering and programmable conversion rates to optimize noise immunity and response time
• Includes built-in fault detection mechanisms such as over-voltage, under-voltage, and over-current thresholds
• Utilizes an I2C interface for efficient communication with host processors while minimizing pin count

Power Supply Controllers, Monitors Applications

• Server and data center power distribution unit (PDU) monitoring
• Industrial equipment power rail supervision
• Telecommunications infrastructure power management
• High-density computing board current sensing

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix XMNTWG to ensure correct tape-and-reel packaging and temperature grade. Confirm that the 26V maximum rating aligns with the target system's peak voltage transients. Ensure the I2C address configuration matches the system design to avoid bus conflicts. Check for RoHS compliance documentation if required by regional regulations.

Power Supply Controllers, Monitors Selection Notes

Select this component when multi-channel monitoring is required to reduce board space compared to discrete solutions. Consider the trade-off between conversion speed and noise filtering based on the application's dynamic load requirements. Verify that the host processor supports the necessary I2C clock speeds and addressing modes. Evaluate thermal performance if multiple channels are operating at maximum conversion rates simultaneously.

Power Supply Controllers, Monitors Part Context

This part belongs to onsemi's NCP4549x family of power monitors, designed for high-accuracy applications. It complements other power management ICs by providing detailed feedback on system efficiency and fault conditions. The family includes variants with different channel counts and voltage ranges to suit diverse architectural needs.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers: NCP45491XMNTWG, NCP45495XMNTWG.