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PAC1952T-2E/4MX

MCHPPAC1952T-2E/4MX

Microchip Technology
Current/Voltage Monitor Regulator Low-Side 16-VQFN (3x3)
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Overview

The PAC1952T-2E/4MX is a high-side or low-side current and voltage monitor featuring 16-bit resolution across dual measurement channels. It provides precise power monitoring via an I2C/SMBus interface, supporting bus voltages up to 32V and requiring a low supply current of only 395 microamps when fully operational.

Why Choose This Part

The device offers excellent accuracy with a +/-1% tolerance and 16-bit ADC resolution for granular power data. Its low-power consumption and wide temperature range of -40C to 125C make it suitable for space-constrained and harsh thermal environments.

Applications

Embedded Computing
Monitoring power rails in notebooks, tablets, and server systems to manage thermal and battery profiles.
AI and GPU Power
High-precision current sensing for low-voltage, high-power modules used in artificial intelligence and edge computing.
Industrial Instrumentation
Measuring current and voltage in factory automation sensors and industrial control units.
Optical Networking
Managing power consumption in optical transceiver modules and high-speed networking hardware.

Key Specifications

Accuracy +/-1%
Function Current/Voltage Monitor
Mounting Type Surface Mount, Wettable Flank
Package / Case 16-VFQFN Exposed Pad
Sensing Method Low-Side
Voltage - Input 2.7V ~ 5.5V
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 16-VQFN (3x3)

Getting Started

To evaluate this sensor, use the PAC1952 evaluation board to interface with the Microchip GUI via USB. For custom firmware development, integrate the provided C drivers for I2C communication and configure the 16-VQFN wettable flank package for reliable automated optical inspection during PCB assembly.

Also Consider

INA219 TITexas Instruments - A widely used alternative for zero-drift, bidirectional current sensing with a simpler two-channel configuration.
INA233 TITexas Instruments - Features a PMBus compatible interface which is ideal for power management in server and telecommunications infrastructure.
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