PCA9481AUKZ

Overview

The PCA9481AUKZ is an ultra-low voltage power management IC featuring an 8-channel Fm+ I2C-bus switch with integrated reset functionality. It operates as a switched capacitor charger with a maximum charge current of 10A and supports supply voltages up to 16.5V. The device includes programmable timer features and fault protection mechanisms for over-temperature and over-under voltage conditions. Designed for surface mount installation in a 70-UFBGA, WLCSP package, it functions within an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates eight low-voltage channels controlled via standard Fm+ I2C interface
• Includes hardware reset generation capabilities for system stability
• Provides comprehensive fault protection against thermal and voltage anomalies

Applications

• Automotive electronic systems
• Communication infrastructure equipment
• Industrial control modules
• Mobile device power architectures
• Smart city and home automation nodes

Procurement Notes

Verify the specific suffix UKZ confirms the required package type and tape-and-reel configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the I2C address matches your system design constraints. Validate that the 16.5V maximum supply rating aligns with your input power rails. Check for any specific ordering restrictions or lifecycle notices on the official NXP website.

Selection Notes

Select this component when designing systems requiring multiple isolated low-voltage outputs from a single source. The integrated reset feature simplifies board layout by reducing external component count. Consider the 10A current capability for high-load applications. Verify compatibility with existing I2C bus speeds and pull-up requirements. Evaluate thermal performance under maximum load conditions given the compact WLCSP footprint.

Part Context

This part belongs to NXP's specialized PMIC family designed for complex power distribution needs. It complements other battery chargers and power switches in automotive and industrial portfolios. The device addresses the demand for compact, efficient power management in space-constrained environments. It serves as a critical node for managing peripheral power rails in modern embedded systems.

Replacement Considerations

Consult official NXP substitution guides for verified alternatives. Cross-reference pinouts and electrical specifications carefully. Ensure functional equivalence in I2C control and reset logic. Verify package dimensions match existing PCB footprints. Review lifecycle status to avoid obsolescence risks during production.

FAQ

What is the maximum supply voltage supported by the PCA9481AUKZ?

The device supports a maximum supply voltage of 16.5V.

Does the PCA9481AUKZ include over-temperature protection?

Yes, the component features built-in fault protection against over-temperature conditions.

What interface is used to control the 8-channel switch?

The device is controlled via an Fm+ I2C-bus interface.