MCP2021A/2A LIN Transceiver with Voltage Regulator Features: Description: The MCP2021A/2A are compliant with LIN Bus The MCP2021A/2A provide a bidirectional, half-duplex Specifications Version 1.3, 2.1 and with SAE communication physical interface to meet the LIN bus J2602-2 specification Revision 2.1 and SAE J2602-2. The devices incorporate a voltage regulator with 5V or 3.3V Support Baud Rates up to 20 kBaud at 70 mA regulated power supply output. The devices 43V Load Dump Protected have been designed to meet the stringent quiescent Maximum Continuous Input Voltage: 30V current requirements of the automotive industry and Wide LIN-Compliant Supply Voltage: 6.0 18.0V will survive +43V load dump transients and double Extended Temperature Range: -40 to +125C battery jumps. Interface to PIC MCU EUSART and Standard USARTs Package Types Wake-Up on LIN Bus Activity or Local Wake Input MCP2021A Local Interconnect Network (LIN) Bus Pin: PDIP, SOIC - Internal Pull-Up Termination Resistor and FAULT/TXE RXD 1 8 Diode for Slave Node VBB CS/LWAKE 2 7 - Protected Against VBAT Shorts VREG LBUS 3 6 - Protected Against Loss of Ground VSS TXD 4 5 - High-Current Drive TXD and LIN Bus Dominant Time-Out Function MCP2021A Two Low-Power Modes: 4x4 DFN - Transmitter Off: 90 A (typical) RXD 1 8 FAULT/TXE - Power Down: 4.5 A (typical) CS/LWAKE 2 7 VBB EP Output Indicating Internal Reset State (POR or 9 VREG 3 6 LBUS Sleep Wake) TXD VSS 4 5 MCP2021A/2A On-Chip Voltage Regulator: - Output Voltage of 5.0V or 3.3V MCP2022A at 70 mA Capability with Tolerances of 3% PDIP, SOIC, TSSOP Over the Temperature Range RXD - Internal Short Circuit Current Limit 1 14 FAULT/TXE - External Components Limited to Filter CS/LWAKE 2 13 VBB Capacitor and Load Capacitor VREG 3 12 LBUS Automatic Thermal Shutdown TXD VSS 4 11 High Electromagnetic Immunity (EMI), Low RESET 5 10 NC Electromagnetic Emission (EME) NC NC 6 9 Robust ESD Performance: 15 kV for LBUS and NC 7 8 NC VBB pin (IEC61000-4-2) * Includes Exposed Thermal Pad (EP), see Table 1-2. 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 4x4 mm DFN Package 2012-2014 Microchip Technology Inc. DS20002298C-page 1MCP2021A/2A MCP2021A/2A Block Diagram VREG RESET (MCP2022A only) Thermal Protection Short Circuit Protection Voltage VBB Regulator Ratiometric Reference VREG Wake-Up Logic 4.2V and Internal Circuits Power Control Bus Wake-Up VREG RXD ~ 30 k CS/LWAKE Slope Control LBUS TXD Bus Dominant FAULT/TXE VSS Timer Thermal and Short Circuit Protection DS20002298C-page 2 2012-2014 Microchip Technology Inc.