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PAC1952T-1E/4MX

MCHPPAC1952T-1E/4MX

Microchip Technology
Current/Voltage Monitor Regulator High-Side 16-VQFN (3x3)
Active3,261 in stock
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Overview

The PAC1952T-1E/4MX is a high-precision, two-channel power and energy monitoring IC designed for high-side or low-side current sensing. It features a 16-bit ADC and on-chip accumulation for 30-bit power results, enabling accurate energy measurement and coulomb counting without taxing the host processor. The device supports a wide input voltage range from 0V up to 32V and communicates via I2C or SMBus.

Why Choose This Part

This IC simplifies system design by offering real-time auto-calibration of offset errors for both voltage and current, ensuring +/-1% accuracy. The 30-bit power accumulation register reduces I2C bus traffic and host wake-ups by offloading complex energy calculations to the hardware.

Applications

Battery Charging Systems
Accurately monitor charge and discharge cycles with integrated coulomb counting for battery health and capacity tracking.
Computing Power Rails
Real-time monitoring of multiple voltage rails in servers or laptops to optimize thermal management and power efficiency.
Embedded System Telemetry
Providing power diagnostics and energy usage statistics for IoT devices and industrial controllers.

Key Specifications

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

Getting Started

Engineers can evaluate this part using the PAC1952 evaluation board from Microchip and the MPLAB X IDE. Ensure the external sense resistor is sized appropriately for your maximum expected current to utilize the full dynamic range of the programmable 16-bit ADC.

Also Consider

INA219 TITexas Instruments - A popular alternative for low-cost, I2C-based power monitoring where 26V is sufficient and lower resolution is acceptable.
LTC2944 Analog Devices - Specifically optimized for high-voltage battery gas gauging with support for up to 60V systems.

Categories

Power Management > Power Monitoring ICs Sensors > Current & Voltage Sensors Consumer Electronics > Battery Management