Microchip High Side Current Monitor 16-Pin VQFN with 2.7V-5.5V Supply Voltage and 16-bit Resolution PAC1944T-E/4MX

Microchip PAC1944T-E/4MX is a four-channel high side current monitor designed for precise power and energy monitoring in embedded, networking, and computing applications. It features a 16-pin VQFN surface mount package measuring 3mm in length, suitable for compact electronic designs.

This device integrates high-resolution analog-to-digital converters (ADCs) with digital circuitry that calculates power consumption and accumulates energy over long periods, allowing energy monitoring for up to a year or longer. It monitors bus voltage (VSOURCE), sense resistor voltage, and accumulated proportional power with 16-bit resolution for accurate measurement results.

Operating with a supply voltage range from 2.7V to 5.5V, and a very low quiescent current of just 5μA, it reduces power consumption on battery-powered and low-power applications. The offset voltage is only 100μV, ensuring minimal measurement errors.

The PAC1944T-E/4MX features programmable digital comparators for each of the four channels, enabling detection of over-voltage, under-voltage, over-current, and overpower conditions against user-defined thresholds. Events trigger ALERT signals via two independent ALERT/GPIO pins, facilitating real-time protection and system monitoring.

This device supports high-speed communication up to 3.4 Mbps, enabling efficient data transfer to embedded controllers. It uses an external sense resistor to define the full-scale current range, providing flexibility in sensing various current levels. No input filters are required, simplifying circuit design.

Its wide operating temperature range from -40°C to 150°C makes it suitable for automotive, industrial, and harsh environmental applications. Key applications include embedded computing, networking, AI and GPU power monitoring, Linux-based server and cloud computing, optical networking modules, notebooks, and tablets.

Four-channel energy monitor with integrated ADCs and digital power calculation. 16-bit resolution voltage and current measurements for high accuracy. Wide supply voltage range from 2.7V to 5.5V. Low quiescent current and offset voltage minimize power consumption and error.

Programmable digital comparators and ALERT outputs for system protection. Compact 16-pin VQFN package with surface mount design. High-speed communication mode at 3.4 Mbps. Robust operating temperature range from -40°C to 150°C.

Flexible current sensing using external resistor full-scale setting. Explore more high performance sensor ICs and monitoring solutions in the Electronics & Electricals category at EnvMart for your industrial and laboratory needs.

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