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Microchip Technology MCP2050 LIN Transceiver with Voltage Regulator

Microchip Technology MCP2050 LIN Transceiver with Voltage Regulator provides a bidirectional, half-duplex communication physical interface to meet the LIN bus specification Revision 2.1 and SAE J2602. This device incorporates a voltage regulator with 5V or 3.3V 70mA regulated power supply output. The on-chip WWDT allows users to adjust the size of the reset window by using an external resistor. The ratiometric VBAT pin scales down VBAT to the range of VREG so it can be monitored by an A/D converter. This device has been designed to meet the stringent quiescent current requirements of the automotive industry and will survive +43V load dump transients, and double battery jumps.

Features

  • Maximum Continuous Input Voltage of 30V
  • Wide LIN Compliant Supply Voltage, 6.0-18.0V
  • Wake-up on LIN Bus Activity or Local Wake Input
  • LIN Bus Pin
    • Internal Pull-up Termination Resistor and Diode for Slave Node
    • Protected Against VBAT Shorts
    • Protected Against Loss of Ground
    • High Current Drive
  • TXD and LIN Bus Dominant Time-out Function
  • Two Low-power Modes
    • TRANSMITTER OFF Mode: 90μA (typical)
    • POWER DOWN Mode: 4.5μA (typical)
  • Output Indicating Internal RESET State (POR or SLEEP Wake)
  • MCP2050 On-chip Voltage Regulator
    • Output Voltage of 5.0V or 3.3V 70mA Capability with Tolerances of ±3% Over Temperature Range
    • Internal Short Circuit Current Limit
    • Only External Filter and Load Capacitors Needed
  • Programmable Windowed Watchdog Timer (WWDT)
    • External Resistor Programmable from 7ms to 140ms
    • Disabled by Connecting the WWDTSELECT Pin to VREG or Let the Pin Float
  • Ratiometric Output of VBAT Voltage Scaled to VREG
  • Automatic Thermal Shutdown
  • High Electromagnetic Immunity (EMI), Low Electromagnetic Emission (EME)
  • Robust ESD Performance: ±15kV for LBUS and VBB pin (IEC61000-4-2)
  • Transient Protection for LBUS and VBB Pins in Automotive Environment (ISO7637)
  • Meets Stringent Automotive Design Requirements
  • Including "OEM Hardware Requirements for LIN, CAN and FlexRay Interfaces in Automotive Applications", Version 1.2, March 2011
  • Multiple Package Options Including Small 5x5 QFN

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Published: 2014-04-25 | Updated: 2022-03-11