MLX80051 Enhanced LIN System Basis IC

By Melexis Technologies NV 132

MLX80051 Enhanced LIN System Basis IC

The MLX80051 from Melexis extends its successful LIN transceiver and system basis product line for the simple and effective development of LIN slaves. This IC combines a physical layer LIN transceiver according to LIN 2.x, as well as SAEJ2602 with a 5 V voltage regulator with RESET output for the connected microcontroller and a window watchdog. This IC is optimized in accordance with the increased EMC requirements for single-wire bus systems as well as the “Hardware requirements for LIN, CAN and Flexray interfaces in automotive applications” defined from German OEMs. The MLX80051 achieves world leading ESD robustness of >20 kV with direct discharge as well as >15 kV with indirect discharge according to IEC61000-4-2.

Features  
  • Low current consumption (typ) sleep mode 20 μA,
    silent mode “noload” 45 μA
  • Direct ESD discharge for pin LIN >20 kV (only Lin cap connected) and for pin VBAT >15 kV
  • Automotive temperature range of –40°C to 125°C
  • Interface I/Os independent from voltage regulator output
  • Low slew mode for optimized SAE J2602 transmission
  • High-impedance LIN pin in case of loss of ground or battery
  • Bus input voltages -24 V to 30 V independent from VBAT
  • Remote and local wake-up source recognition
  • VCC undervoltage detection at NRES output (start-up delay 4 ms)
  • VSUP undervoltage detection (POR), over-temperature shutdown
  • TxD dominant time-out function, standby mode time-out after 350 ms
  • Enhanced ESD robustness according to IEC 61000-4-2
  • Output current extension via external transistor
  • Indirect ESD discharge for pin LIN >15 kV
  • Programmable window watchdog
  • LIN 2.x / SAE J2602 compliant
  • Operating voltage VSUP = 5 ... 18 V
  • 3 modes: normal, silent, and sleep
  • Linear low-drop voltage regulator
  • Normal mode 5 V / 70 mA ±2%
  • Silent mode 5 V / 20 mA ±2%
  • Additional WAKE input
  • Output current limitation
  • LIN-bus transceiver
  • Baud rate up to 20 kBaud
  • Ignition input
  • Slew rate control for best EME behavior

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