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PAC1954T-E/4MX

MCHPPAC1954T-E/4MX

Microchip Technology
Current & Power Monitors & Regulators 32V, High Side Sensing/4 -Channel Power Monitor w/Accumulator
2,912 in stock
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Overview

The PAC1954 is a four-channel power and energy monitor that provides high-side current sensing and bus voltage monitoring up to 32V. It features a built-in hardware accumulator for power and energy integration, offloading intensive calculation tasks from the system host controller.

Why Choose This Part

The integrated energy accumulator allows for long integration periods (up to one year) without host intervention, significantly reducing I2C bus traffic and CPU overhead. Its wide 100mV full-scale sense voltage range and 16-bit resolution provide high accuracy across a broad dynamic range of currents.

Applications

Multi-Rail Power Monitoring
Simultaneously monitor four independent voltage rails in complex systems like networking switches or servers.
Battery Management Systems
Track energy consumption and charge levels in multi-cell battery packs with precision accumulation.
Industrial Power Control
Measure real-time power consumption and peak usage in 12V and 24V industrial automation equipment.
USB Power Delivery
Monitor VBUS voltage and current across multiple ports to ensure compliance and efficiency in charging stations.

Getting Started

Evaluation can be performed using the PAC1954 Evaluation Board (ADM00925). The device communicates via a standard I2C/SMBus interface; ensure the SENSE pins are routed as differential pairs to minimize noise and maintain measurement accuracy.

Also Consider

INA226 TITexas Instruments - A high-accuracy 36V single-channel monitor if four channels are not required.