PAC1944T-E/4MX is 4-channel bidirectional power monitor with I2C interface tracks voltage, current and power for servers, industrial equipment and battery electronics
Specifications
Manufacturer:
Microchip Technology
Product Number:
PAC1944T-E/4MX
Description:
IC CURRENT/VOLT MON 1% 16VQFN
Highlight:
4-channel bidirectional power monitor IC
,I2C interface power monitor IC
,server power monitor IC with warranty
Introduction
PAC1944T-E/4MX 4-Channel Bidirectional Power Monitor
4-channel bidirectional power monitor with I2C interface tracks voltage, current and power for servers, industrial equipment and battery electronics
Core Functions
PAC1944T-E/4MX is a four-channel high-precision DC power monitor produced by Microchip, supplied in QFN-28 packaging.
- Integrates four independent power measurement channels, supporting simultaneous sampling of voltage and current for four power rails to calculate real-time power consumption
- Built-in low-offset bidirectional current sense amplifiers, supporting high-side current sampling without breaking the ground loop
- Measures both positive and negative currents to monitor charge and discharge states of batteries
- Ultra-wide measurement range: voltage detection up to 32 V per channel; configurable current sense gain adapts to microampere to ampere level loads
- High measurement precision: built-in 16-bit analog-to-digital converters, low measurement drift across full temperature range
- Integrated temperature sensor for internal die temperature monitoring
- Standard I2C communication interface, compatible with multi-drop bus topology
- Interrupt output pins to alert the main MCU once power over-limit events are detected
- Multiple power-saving operating modes including single-sample mode and sleep mode
- Industrial temperature grade of -40 °C to +125 °C
Typical Applications
Server & Data Center Hardware
Server motherboard power rail monitoring, storage hard disk power consumption detection, rack-mounted power distribution unit load monitoring, GPU auxiliary power real-time measurement.
Industrial Control Equipment
Multi-channel power monitoring for PLC modules, industrial sensor power consumption tracking, battery charging and discharging state detection of portable industrial testers, motor drive current monitoring.
Battery-Powered Portable Devices
Notebook multi-rail power measurement, tablet power consumption analysis, power bank charge-discharge monitoring, handheld medical device battery status tracking.
Consumer Electronics & Smart Hardware
Smart TV internal power rail detection, multi-port charger output power monitoring, smart home hub power analysis, gaming console peripheral power measurement.
Automotive Electronic Auxiliary Modules
Vehicle infotainment multi-channel power monitoring, on-board wireless charging power detection, ADAS low-voltage power rail consumption tracking.
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