The Melexis MLX80031 and MLX80051, supplied in compact QFN5x5 packages, address this growing need by enabling the simple and highly efficient development of LIN slaves. These ICs incorporate a physical layer LIN transceiver (compliant with LIN 2.xy SAEJ2602) and a voltage regulator (3.3V/70mA for the MLX80031 and 5V/70mA for the MLX80051). Both devices feature an independent window supervisor, increasing the availability of the connected microcontroller to the system. Furthermore, their pinouts are compatible with existing LIN devices such as the ATA6622/28.
Manufactured using 0.35µm HV-CMOS process technology, these transceivers are optimized to minimize current consumption (only 15µA in standby mode). Integrated sleep management ensures wake-up from the LIN bus itself or directly from a connected microcontroller or other external sources. By generating a RESET output signal, they can minimize the external circuitry required for the connected microcontroller. The output current can be increased by means of an external bipolar transistor if the internal regulator cannot handle the current level required for a given application.
The MLX80031 and MLX80051 also comply with electromagnetic compatibility (EMC) requirements for single-wire bus systems, as well as the "Hardware Requirements for LIN, CAN, and Flexray Interfaces in Automotive Applications" defined by German car manufacturers. For self-protection, the ICs incorporate load current limiting and over-temperature shutdown, as well as 40V load dump protection. Furthermore, the MLX80031 and MLX80051 achieve top-tier electrostatic discharge (ESD) robustness of >20kV with direct discharge, as well as >15kV with indirect discharge (in accordance with IEC61000-4-2). These devices are AECQ100 and RoHS compliant.
- Details
- Category: Integrated Circuits
Advanced LIN communication devices that integrate voltage regulation and supervisor functionality
The LIN (local interconnect network) bus continues to experience widespread adoption in the automotive industry. This robust and cost-effective communication protocol allows for the implementation of many basic network functions in subsystems that were previously considered uneconomical for intelligent actuators and controls.
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