MLX80031KLW-BAA-000-TU

Drivers, Receivers, Transceivers Overview

The MLX80031KLW-BAA-000-TU is a LIN System Basis IC from Melexis, integrating a linear low-drop voltage regulator, a LIN bus transceiver, and a programmable window watchdog. It operates within a supply voltage range of 5 V to 27 V and supports baud rates up to 20 kBaud. The device provides a 3.3 V output at 70 mA in normal mode and 20 mA in silent mode, with an accuracy of ±2%. Key features include three operational modes (Normal, Silent, Sleep), remote and local wake-up recognition, and robust ESD protection compliant with IEC 61000-4-2. It is housed in a QFN_WF20/5x5 package and functions across an automotive temperature range of –40°C to 125°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrates a 3.3V/70mA linear low-drop voltage regulator with undervoltage detection and thermal shutdown.
• Features a LIN 2.x / SAE J2602 compliant transceiver with slew rate control for optimized electromagnetic emissions.
• Includes a programmable window watchdog unit configurable via external resistors for system monitoring.
• Provides enhanced ESD robustness with direct discharge capabilities exceeding 20 kV on the LIN pin.

Drivers, Receivers, Transceivers Applications

• Slave nodes in LIN bus systems conforming to LIN specification revision 2.x.
• Automotive electronic control units requiring integrated power management and communication.
• Applications necessitating low current consumption in sleep and silent modes.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix TU against the manufacturer's latest documentation to confirm tape-and-reel packaging details. Ensure compatibility with the required QFN_WF20/5x5 footprint during PCB layout. Cross-reference the silicon revision to validate feature availability, particularly regarding the window watchdog functionality unique to the MLX80031 variant.

Drivers, Receivers, Transceivers Selection Notes

Select the MLX80031 over the MLX80030 when a programmable window watchdog is required for application safety. Choose this model over the MLX8005x series if a 3.3 V regulator output is preferred instead of 5 V. Confirm that the QFN_WF20/5x5 package meets the thermal and spatial constraints of the design compared to the SOIC8 option.

Drivers, Receivers, Transceivers Part Context

This component belongs to the MLX80050/51/30/31 family of LIN System Basis ICs. It shares core transceiver and regulator architecture with the MLX80051 but differs in regulator output voltage (3.3 V vs 5 V) and package type (QFN vs SOIC). The MLX80031 specifically adds the window watchdog feature absent in the MLX80030.

Drivers, Receivers, Transceivers Replacement Considerations

MLX80031KLW-CAA-100-RE is a confirmed alternative part number within the same family offering identical electrical specifications and functionality.