LIN TRANSCEIVER WITH VREG AND LIN FALLING EDGE WAKE

The MCP2022 provides a bidirectional, half-duplex communication physical interface to automotive, and industrial LIN systems to meet the LIN bus specification Revision 2.0. The device incorporates a voltage regulator with 5V @ 50 mA or 3.3V @ 50 mA regulated power supply output. The regulator is short circuit protected, and is protected by an internal thermal shutdown circuit. The regulator has been specifically designed to operate in the automotive environment and will survive reverse battery connections, +43V load dump transients, and double-battery jumps. The device has been designed to meet the stringent quiescent current requirements of the automotive industry.

• The MCP2022 is compliant with LIN Bus Specifications 1.3, 2.0, and 2.1 and are compliant to SAE J2602
• Support Baud Rates up to 20 Kbaud with LIN-compatible output driver
• 43V load dump protected
• Very low EMI meets stringent OEM requirements
• Wide supply voltage, 6.0V
  • 18.0V continuous:
  • Maximum input voltage of 30V
• Extended Temperature Range: -40 to +125°C
• Interface to PIC EUSART and standard USARTs
• Local Interconnect Network (LIN) bus pin:
  • Internal pull-up resistor and diode
  • Protected against ground shorts
  • Protected against loss of ground
  • High current drive
• Automatic thermal shutdown
• On-Board Voltage Regulator:
  • Output voltage of 5.0V with tolerances of ±3% over temperature range
  • Available with alternate output voltage of 3.3V with tolerances of ±3% over temperature range
  • Maximum continuous input voltage of 30V
  • Internal thermal overload protection
  • Internal short circuit current limit
  • External components limited to filter capacitor only and load capacitor
• Two low-power modes:
  • Receiver on, Transmitter off, voltage regulator on (? 85 µA)
  • Receiver monitoring bus, Transmitter off, voltage regulator off (? 16 µA)