MCZ33730EK

Overview

The MCZ33730EK is a multiple output power supply integrated circuit designed for automotive applications. It incorporates a switching regulator with an adjustable frequency oscillator ranging from 100kHz to 500kHz, alongside three linear regulators (LDOs). The device features one synchronous step-down buck converter and three LDO outputs, providing a versatile power management solution for complex electronic systems requiring mixed regulation types.

Feature Summary

• Integrates a single synchronous buck converter with programmable switching frequency
• Includes three dedicated low-dropout linear regulators for noise-sensitive loads
• Designed specifically for robust automotive environment operation

Applications

• Automotive infotainment system power distribution
• Vehicle telematics control unit power supplies
• Dashboard instrument cluster power management

Procurement Notes

Verify the manufacturer designation as NXP Semiconductors, noting that Freescale Semiconductor was merged into NXP in December 2015. Confirm the package type matches the required PCB footprint, typically a 32-lead SOIC variant for this series. Ensure the specific suffix indicates the correct temperature grade and reel configuration for your manufacturing process.

Selection Notes

Select this component when a design requires a combination of efficient high-current buck conversion and clean, low-noise linear regulation within a single package. It is suitable for applications where board space is limited but multiple voltage rails with different noise requirements are necessary. Consider the thermal performance of the chosen package if high load currents are expected.

Part Context

This part belongs to the MC33730 family of multi-output power management ICs. Originally developed by Freescale Semiconductor, these components are now manufactured and supported by NXP Semiconductors following the corporate merger. The family targets automotive electronics, offering integrated solutions that reduce component count and simplify power architecture design for vehicle subsystems.

Replacement Considerations

Publicly confirmed substitute part numbers for direct replacement are not available in the provided documentation. Verify compatibility with existing designs before considering alternative PMICs from other manufacturers or different product lines within the NXP portfolio.