MCP2050 Datasheet, PDF (1/40 Pages) Microchip Technology – LIN Transceiver with Voltage Regulator

MCP2050
LIN Transceiver with Voltage Regulator
Features:
• The MCP2050 is compliant with:
- LIN Bus Specifications Version 1.3, 2.1 and
with SAE J2602-2
• Support Baud Rates Up to 20 kBaud
• 43V Load Dump Protected
• Maximum Continuous Input Voltage of 30V
• Wide LIN Compliant Supply Voltage, 6.0-18.0V
• Extended Temperature Range: -40 to +125°C
• Interface to PIC^® EUSART and Standard USARTs
• 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: 90 µA (typical)
- Power Down mode: 4.5 µA (typical)
• Output Indicating Internal Reset State (POR or
Sleep Wake)
• MCP2050 On-Chip Voltage Regulator
- Output voltage of 5.0V or 3.3V with 70 mA
capability and tolerances of ±3% over
operating temperature range
- Internal short-circuit current limit
- Only external filter and load capacitors needed
• 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)
• Meets Stringent Automotive Design Requirements
Including “OEM Hardware Requirements for LIN,
CAN and FlexRay Interfaces in Automotive
Applications”, Version 1.3, May 2012
• Multiple Package Options Including Small 5x5
QFN
Description:
The MCP2050 provides a bidirectional, half-duplex
communication physical interface to meet the LIN bus
specification Revision 2.1 and SAE J2602. The device
incorporates a voltage regulator with 5V or 3.3V 70 mA
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.
The 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.
MCP2050 family members:
- MCP2050-500, 14-pin, LIN driver with 5.0V
regulator
- MCP2050-330, 14-pin, LIN driver with 3.3V
regulator
- MCP2050-500, 20-pin QFN, LIN driver with
5.0V regulator
- MCP2050-330, 20-pin QFN, LIN driver with
3.3V regulator
 2012-2014 Microchip Technology Inc.
DS20002299C-page 1