MC33742PEP

Overview

The MC33742PEP is a System Basis Chip (SBC) from NXP Semiconductors, housed in a 48-pin QFN package. It integrates a high-speed CAN transceiver compliant with CAN 2.0, supporting data rates up to 1.0 Mbps. The device features two 5.0 V low-dropout regulators; one is fully protected internally with 200 mA output capability, while the second utilizes an external pass transistor. It operates within a supply voltage range of 5.5 V to 18 V and includes four wake-up inputs, a programmable window watchdog, and an SPI interface for control. The typical reset duration is 15 ms.

Feature Summary

• Integrates a fully protected fixed 5.0 V regulator with current limiting and overtemperature prewarning alongside a secondary regulator driven by an external PNP transistor.
• Provides four distinct operating modes including Normal, Standby, Stop, and Sleep to optimize power consumption in automotive electronic control units.
• Features a high-side switch output driver capable of controlling external circuitry with internal current limitation.

Applications

• Automotive Electronic Control Units (ECUs)
• CAN bus intermodule communication systems
• Power management in vehicle networks

Procurement Notes

Verify the component status as End-of-Life or obsolete prior to procurement, as indicated by distributor records. Confirm that the 48-pin QFN package matches the design requirements. Ensure compatibility with the specific 15 ms reset duration characteristic of the standard 33742 variant rather than the S version.

Selection Notes

Select this part when a compact 48-pin QFN footprint is required compared to the 28-pin SOICW alternative. Verify the need for the standard 15 ms reset duration, as the MC33742S offers a shorter 3.5 ms duration. Ensure the application supports the integration of an external series pass transistor if a second independent 5.0 V regulator is necessary.

Part Context

This component belongs to the MC33742 family of System Basis Chips designed for automotive applications. It combines power management and communication functions into a single integrated circuit. The PE suffix specifically denotes the 48-pin Quad Flat No-leads (QFN) package configuration, distinguishing it from the SOIC variants.

Replacement Considerations

MC33742PEG: Identical functionality but packaged in a 28-pin SOIC-Wide format instead of the 48-pin QFN.

FAQ

What is the difference between the MC33742 and MC33742S regarding reset duration?

The MC33742 has a typical reset duration of 15 ms, whereas the MC33742S has a significantly shorter typical reset duration of 3.5 ms.

How is the second 5.0 V regulator implemented on the MC33742PEP?

The second 5.0 V regulator is not internal; it requires an external series pass PNP bipolar junction transistor connected to the V2 sense input and V2 output drive pins.