MCP2021 Datasheet, PDF (1/46 Pages) Microchip Technology – LIN Transceiver with Voltage Regulator

MCP2021/2
LIN Transceiver with Voltage Regulator
Features
• The MCP2021 and MCP2022 are 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% overtemperature range
- Available with alternate output voltage of
3.3V with tolerances of ±3% overtemperature
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)
Description
The MCP2021/2 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 shut-
down 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.
MCP2021/2 family members:
• 8-pin PDIP, DFN and SOIC packages:
- MCP2021-330, LIN-compatible driver,
8-pin, 3.3V regulator
- MCP2021-500, LIN-compatible driver,
8-pin, 5.0V regulator
• 14-lead PDIP, TSSOP and SOIC packages with
RESET output:
- MCP2022-330, LIN-compatible driver,
14-pin, 3.3V regulator
- MCP2022-500, LIN-compatible driver,
14-pin, 5.0V regulator
Package Types
DFN-8, PDIP-8, SOIC-8
RXD
1
CS/LWAKE
2
VREG
3
TXD
4
8
FAULT/TXE
7
VBB
6
LBUS
5
VSS
PDIP-14, SOIC-14, TSSOP-14
RXD
1
14
FAULT/TXE
CS/LWAKE
2
13
VBB
VREG
3
12
LBUS
TXD
4
11
VSS
RESET
5
10
NC
NC
6
9
NC
NC
7
8
NC
© 2009 Microchip Technology Inc.
DS22018E-page 1