MCHPPAC1941T-2E/J6CX
Overview
The PAC1941T-2E/J6CX is a high-side current and voltage monitor with one measurement channel and 16-bit ADC resolution. It features integrated power accumulation and coulomb counting, allowing for precise energy monitoring over I2C or SMBus interfaces without taxing the host processor. The device includes auto-calibration for offset error and supports both high-side and low-side sensing methods.
Why Choose This Part
The on-chip 30-bit power accumulator significantly reduces I2C bus traffic and host CPU overhead by performing energy calculations locally. Its real-time auto-calibration ensures high accuracy over the full operating temperature range of -40C to 125C. The ultra-low sleep current of 5uA makes it ideal for power-sensitive, battery-operated designs.
Applications
Key Specifications
Getting Started
To evaluate this part, use the PAC1944 Evaluation Board to interface with Microchip's GUI software for real-time data visualization. Connect the I2C bus to a host microcontroller like a PIC or SAMD and utilize the provided C-code drivers to read the 30-bit power accumulation registers. Ensure the 16-WLCSP package is handled with proper SMT equipment due to its small 2.23mm x 2.17mm footprint.
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