MLX80051KLW-CAA-100-RE

Drivers, Receivers, Transceivers Overview

The MLX80051KLW-CAA-100-RE is a LIN System Basis IC from Melexis, designed for automotive slave nodes. It integrates a 5V/70mA linear low-drop voltage regulator, a programmable window watchdog, and a LIN 2.x / SAE J2602 compliant transceiver. The device operates within a supply voltage range of 5 to 27 V and supports Normal, Silent, and Sleep modes. Key electrical parameters include a typical sleep mode current of 30 µA at 25 °C and a silent mode 'noload' current of 45 µA. The integrated reset unit features a VCC undervoltage detection threshold of 4.1 V with a start-up delay of 4 ms. The component is housed in a QFN_WF20 (5x5 mm) package and is rated for an automotive temperature range of –40°C to 125°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrates a 5V/70mA linear low-drop voltage regulator with output current limitation and load dump protection up to 40V.
• Features a programmable window watchdog with configurable timing via external resistors and a dedicated oscillator pin.
• Includes a LIN bus transceiver supporting baud rates up to 20 kBaud with slew rate control for optimized electromagnetic emissions.
• Provides enhanced ESD robustness with direct discharge capabilities exceeding 20 kV on the LIN pin and 15 kV on the VS pin.

Drivers, Receivers, Transceivers Applications

• Automotive LIN bus slave nodes requiring integrated power management and communication.
• Systems needing remote and local wake-up source recognition from Sleep or Silent modes.
• Applications demanding high reliability under harsh electromagnetic environments with load dump protection.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix CAA-100-RE against the manufacturer's latest datasheet revision to confirm package type and feature set. Ensure compatibility with the required LIN specification version and thermal management requirements for the QFN20 package during integration.

Drivers, Receivers, Transceivers Selection Notes

Select this variant over the SOIC8 packaged MLX80050KDC when a smaller footprint is required. The MLX80051 includes additional control pins such as WAKE, KL15, and INH compared to the MLX80050, enabling more sophisticated power mode management and external transistor extension for the voltage regulator.

Drivers, Receivers, Transceivers Part Context

This component belongs to the MLX8005x/3x family of LIN System Basis ICs. It shares functional similarities with the MLX80050 but differs in package and available control interfaces. The MLX80051 specifically targets applications requiring the extended functionality provided by the QFN20 package pins while maintaining the same core LIN transceiver and regulator specifications.

Drivers, Receivers, Transceivers Replacement Considerations

The MLX80050KDC-CAA-100-RE is a pin-compatible alternative in the SOIC8 package, though it lacks the extra control pins found on the MLX80051. Direct substitution requires verifying that the missing WAKE, KL15, and INH pins are not utilized in the target design.