PAC1954T-E/4MXVAO

Current Regulation/Management Overview

The PAC1954T-E/4MXVAO is a four-channel power monitor IC designed for high-side current sensing applications. It features two independent 16-bit analog-to-digital converters (ADCs) to measure voltage and current with high precision. The device supports a supply voltage range of 2.7 V to 5.5 V and operates within an extended temperature range from -40°C to +125°C. It offers programmable full-scale ranges for current sensing, typically spanning ±50 mV, and provides alert capabilities via dedicated pins. The component is housed in a compact WLCSP-16 package, suitable for space-constrained designs.

Current Regulation/Management Feature Summary

• Four-channel architecture with dual independent 16-bit ADCs for simultaneous multi-rail monitoring
• High-side current sensing capability with programmable full-scale input ranges
• Integrated accumulator function for energy measurement and accumulation over time
• Configurable alert outputs for threshold-based fault detection and system protection

Current Regulation/Management Applications

• Automotive infotainment and body control module power distribution units
• Industrial equipment multi-rail power management systems
• Server and storage subsystem power monitoring
• Battery-powered devices requiring precise energy tracking

Current Regulation/Management Procurement Notes

Verify the specific suffix '4MXVAO' against the manufacturer's latest datasheet to confirm pinout and packaging details. Ensure compatibility with automotive qualification standards if used in vehicle electronics. Check for any recent product change notices regarding marking or material composition updates before finalizing procurement specifications.

Current Regulation/Management Selection Notes

Select this component when multi-channel high-side monitoring with integrated energy accumulation is required. The dual 16-bit ADCs provide superior accuracy compared to single-ADC solutions. Consider the WLCSP-16 package size constraints during PCB layout. Verify that the I2C interface speed meets the system communication requirements and that the alert logic aligns with the host controller's interrupt handling capabilities.

Current Regulation/Management Part Context

This part belongs to the PAC195x family of multi-channel power monitors from Microchip Technology. It complements other variants like the PAC1934 and PAC1954 by offering four channels with enhanced accumulation features. The family is designed for applications requiring detailed power analysis across multiple rails, such as in complex embedded systems and automotive networks.

Current Regulation/Management Replacement Considerations

Direct substitutes include PAC1954T-E/J6CX and PAC1954T-E/4MX. Verify pin-to-pin compatibility and software register mapping before substitution. Note that some variants may differ in package type or operating temperature range. Consult the official cross-reference guide for confirmed interchangeable parts.