MCP2050 LIN Transceiver with Voltage Regulator Meets Stringent Automotive Design Requirements Features: Including OEM Hardware Requirements for LIN, The MCP2050 is compliant with: CAN and FlexRay Interfaces in Automotive - LIN Bus Specifications Version 1.3, 2.1 and Applications, Version 1.3, May 2012 with SAE J2602-2 Multiple Package Options Including Small 5x5 Support Baud Rates Up to 20 kBaud QFN 43V Load Dump Protected Maximum Continuous Input Voltage of 30V Description: Wide LIN Compliant Supply Voltage, 6.0-18.0V Extended Temperature Range: -40 to +125C The MCP2050 provides a bidirectional, half-duplex communication physical interface to meet the LIN bus Interface to PIC EUSART and Standard USARTs specification Revision 2.1 and SAE J2602. The device Wake-Up on LIN Bus Activity or Local Wake Input incorporates a voltage regulator with 5V or 3.3V 70 mA LIN Bus Pin regulated power supply output. The on-chip WWDT - Internal pull-up termination resistor and diode allows users to adjust the size of the reset window by for slave node using an external resistor. The ratiometric VBAT pin - Protected against VBAT shorts scales down VBAT to the range of VREG so it can be - Protected against loss of ground monitored by an A/D converter. - High current drive The device has been designed to meet the stringent TXD and LIN Bus Dominant Time-Out Function quiescent current requirements of the automotive industry and will survive +43V load dump transients, Two Low-Power Modes and double battery jumps. - Transmitter Off mode: 90 A (typical) MCP2050 family members: - Power Down mode: 4.5 A (typical) Output Indicating Internal Reset State (POR or - MCP2050-500, 14-pin, LIN driver with 5.0V Sleep Wake) regulator MCP2050 On-Chip Voltage Regulator - MCP2050-330, 14-pin, LIN driver with 3.3V - Output voltage of 5.0V or 3.3V with 70 mA regulator capability and tolerances of 3% over - MCP2050-500, 20-pin QFN, LIN driver with operating temperature range 5.0V regulator - Internal short-circuit current limit - MCP2050-330, 20-pin QFN, LIN driver with - Only external filter and load capacitors needed 3.3V regulator Programmable Windowed Watchdog Timer (WWDT) - External resistor programmable from 7 ms to 140 ms - 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: 15 kV for LBUS and VBB pin (IEC61000-4-2) Transient Protection for LBUS and VBB Pins in Automotive Environment (ISO7637) 2012-2014 Microchip Technology Inc. DS20002299C-page 1MCP2050 Package Types MCP2050 MCP2050 5x 5QFN* PDIP, SOIC VBATRATIO 1 14 WWDTRESET 2 13 RXD WWDTTRIG CS/LWAKE 3 12 WWDTSELECT VREG 4 11 FAULT/TXE 5 TXD 10 VBB RESET 6 9 LBUS NC 7 8 VSS 15 RXD 1 WWDTTRIG CS/LWAKE 2 14 WWDTSELECT EP VREG 3 13 FAULT/TXE 21 TXD 4 12 VBB 11 NC RESET 5 * Includes Exposed Thermal Pad (EP), see Table 1-2. Block Diagram 4.2V WWDTRESET WWDTTRIG Programmable VREG Windowed Watchdog WWDTselect RESET Thermal Protection Short-Circuit Protection Voltage VBB Regulator Ratiometric Reference VREG Wake-Up 4.2V Internal Circuits Logic and Bus Wakeup Power Control VREG RXD ~30 CS/LWAKE k Slope Control LBUS TXD Bus Dominant FAULT/TXE VSS Timer VBB VREG Thermal and Short-Circuit VBATRATIO Protection 300 DS20002299C-page 2 2012-2014 Microchip Technology Inc. 6 20 NC NC LBUS 7 NC 19 VSS 18 VBAT RATIO 8 NC 9 17 WWDTRESET 10 NC NC 16