MC33298P

Overview

The MC33298P is an integrated power switch featuring eight independent N-channel low-side outputs. It operates with a load voltage range of 9V to 26.5V and accepts a supply voltage between 2.5V and 4.5V. Each channel supports a maximum output current of 1A with a typical on-resistance of 350 milliohms. The device utilizes an SPI interface for control and status feedback. It provides comprehensive fault protection including fixed current limiting, open-load detection, over-temperature shutdown, and over-voltage protection. The component is housed in a 20-DIP package suitable for through-hole mounting.

Feature Summary

• Integrates eight independent N-channel MOSFETs for multi-channel load driving
• Includes intelligent protection mechanisms such as thermal shutdown and short-circuit limiting
• Features open-load detection capability for diagnostic monitoring
• Supports serial peripheral interface communication for configuration and status reporting

Applications

• Automotive body control modules
• Seat adjustment systems
• Window lift actuators
• Industrial solenoid drivers

Procurement Notes

Verify the obsolete status of this component before integration into new designs. Confirm availability of alternative sources or qualified replacement parts from authorized distributors. Ensure that the 20-DIP through-hole package meets mechanical constraints. Check RoHS compliance requirements against project specifications as indicated by non-compliant status.

Selection Notes

Evaluate the 1A per channel current rating against peak load requirements. Assess thermal performance under continuous operation conditions given the 350 milliohm resistance. Verify SPI bus compatibility with the host microcontroller. Consider the wide operating temperature range for environmental suitability. Review fault protection thresholds to ensure system safety margins are met.

Part Context

This part belongs to the MC33298 family of smart power switches manufactured by NXP USA Inc. It serves as a bridge between low-power logic controllers and high-current loads. The device replaces discrete MOSFET solutions by integrating protection features directly on-chip. It is designed for robust operation in automotive and industrial environments requiring reliable switching capabilities.

Replacement Considerations

Public confirmed substitute part numbers: None available.