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MCP2025 Datasheet

Download or read online Microchip Technology MCP2025 LIN Transceiver With Voltage Regulator pdf datasheet.



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LIN Transceiver with Voltage Regulator
Features
• The MCP2025 is compliant with:
- LIN Bus Specifications Version 1.3, and 2.x
- SAE J2602-2
• Supports 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 V
Shorts
BAT
- Protected Against Loss of Ground
- High Current Drive
• TXD and LIN Bus Dominant Time-out Function
• Two Low-power Modes
- TRANSMITTER-OFF: 90 µA (typical)
- POWER-DOWN mode: 4.5 µA (typical)
• MCP2025 On-chip Voltage Regulator
- Output Voltage of 5.0V or 3.3V 70 mA
Capability with Tolerances of ±3% Over
Temperature Range.
- Internal Short Circuit Current Limit
- Only External Filter and Load Capacitors
Needed
• 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 1.2, March 2011
• Multiple Package Options Including Small 4x4 mm
DFN
 2012 Microchip Technology Inc.
MCP2025
Description
The MCP2025 provides a bidirectional, half-duplex
communication physical interface to meet the LIN bus
specification Revision 2.1 and SAE J2602-2. The
device incorporates a voltage regulator with 5V or 3.3V
70 mA regulated power supply output.
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.
MCP2025 family members include:
- MCP2025-500, 8-pin, LIN driver with 5.0V
regulator
- MCP2025-330, 8-pin, LIN driver with 3.3V
regulator
Package Types (Top View)
PDIP, SOIC
1
8
V
BB
2
7
CS/LWAKE
V
3
6
SS
LIN
4
5
4x4 DFN
1
8
V
BB
2
7
CS/LWAKE
EP
V
9
SS
3
6
LIN
4
5
VREG
RESET
TXD
RXD
VREG
RESET
TXD
RXD
DS22306A-page 1

Summary of Contents

Page 1

... 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. MCP2025 family members include: - MCP2025-500, 8-pin, LIN driver with 5.0V regulator - MCP2025-330, 8-pin, LIN driver with 3.3V regulator Package Types (Top View) ...

Page 2

... MCP2025 Block Diagram Short Circuit Protection V REG 4.2V Internal Circuits V REG RXD CS/LWAKE TXD DS22306A-page 2 Thermal Protection Voltage Regulator Ratiometric Reference Wake-Up Logic and Bus Wakeup Power Control Slope Control Bus Dominant Timer Thermal and Short Circuit Protection 2012 Microchip Technology Inc. ...

Page 3

... FUNCTION DESCRIPTION The MCP2025 provides a physical interface between a microcontroller and a LIN half-duplex bus intended for automotive and industrial applications with serial bus baud rates kbaud. This device will translate the CMOS/TTL logic levels to LIN logic levels, and vice versa. The device offers optimum EMI and ESD performance ...

Page 4

... ON OFF On LIN bus rising edge or CS/LWAKE high level READY mode OFF ON If TXD and CS/LWAKE low level, then POWER- DOWN I f TXD and CS/ LWAKE high level, then OPERATI ON MCP2025 > 0.8V ), the TRANSMIT- REG REG_NOM Section 1.1.6 for more details. in BUS falls below ...

Page 5

... Note: CS/LWAKE should NOT be tied directly to pin V REG as this could force the MCP2025 into OPERATION mode before the microcontroller is initialized. 1.2.8 RESET RESET OUTPUT pin. This is an open drain output pin. It indicates the internal voltage has reached a valid, stable level. As long as the internal voltage is valid (above 0.8VREG), this pin will present high impedance ...

Page 6

... TXD pin being returned high. 1.4 Internal Voltage Regulator The MCP2025 has a positive regulator capable of sup- plying 5.00 or 3.30 V current over the entire operating temperature range of -40°C to 125°C. The regulator uses an LDO design, is short-circuit-protected and will turn the regulator output ...

Page 7

... MCP2025 3. REG REG V 12V BB 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 ...

Page 8

... Start-up 2012 Microchip Technology Inc OFF V REG-NOM (4) (1) (2) (3) < regulator off BB ON > regulator Minimum V to maintain regulation BB < regulator will turn off OFF MCP2025 Minimum V to maintain regulation DS22306A-page 8 ...

Page 9

... 8V. BATmin However, the user needs to verify that the value found BB in Equation 1-1 Equation 1-3. While this protection is optional, it should be considered as good engineering practice. MCP2025 t t value according to TP BB, as the reference value for the BB value according to TP varies. REG ...

Page 10

... C 1V BAT For a highly resistive connection 0.1 mH: again, the C Figure 1-8 shows the minimum recommended C C ratio as a function of the impedance of the V REG connection. 8V and . BAT Figure 1-9). : BAT MCP2025 2 2 100L R BAT tot ------------------------------ - 2 R REG 2 tot -------- - 100 in . ...

Page 11

... Minimum Recommended C FIGURE 1-8: Cbat/Creg ratio as function of the Vbat line impedance 10 1 0.1 2012 Microchip Technology Inc. /C Ratio BAT REG Vbat line inductance [mH] MCP2025 Rbat0.1 Rbat0.3 Rbat1 Rbat2 Rbat4 Rbat10 1 DS22306A-page 11 ...

Page 12

... V SS for selecting correct ESR. to select the minimum recommended value for C BAT 40m Return LIN bus LIN bus MCP205X MCP202XA Slave 1 Slave 2 µC µC MCP2025 Master Node Only BAT LIN Bus (4) 43V with no ESR REG . The R value is BAT TP supply ...

Page 13

... Term used in the following tables not used BUS BUS MCP2025 0.3 REG (Note 2) ...-0.3 to 43V ECU operating voltage Supply voltage at device pin Current limit of driver Recessive state Dominant state DS22306A-page 13 ...

Page 14

... MCP2025 2.3 DC Specifications Electrical Characteristics: Unless otherwise indicated, all limits are specified for: DC Specifications V T Parameter Power V Quiescent Operating Current BB V Ready Current BB V Transmitter-off Current with BB Watchdog Disabled V Power-down Current BB V Current with V Floating Microcontroller Interface High-level Input Voltage ( ...

Page 15

... BUS _NO_P WR _ 0.475 0.5 0.525 V BUS CNT SLAVE C 50 SLAVE 3.4 WK(LBUS) 0 LBUS MCP2025 Units Conditions V Recessive state V Dominant state – BUS IL BUS mA Output voltage 0 12V BB µA 30 k internal pull- ...

Page 16

... MCP2025 2.3 DC Specification (Continued) Electrical Characteristics: Unless otherwise indicated, all limits are specified for: DC Specifications V 6.0V to 18. -40°C to 125° LOADREG Parameter Sym. Voltage Regulator - 5.0V Output Voltage Range V REG V Line Regulation OUT V Load Regulation OUT Power Supply Ripple PSRR ...

Page 17

... ESR CURVES FOR LOAD CAPACITOR SELECTION 10 1 Unstable Instable 0.1 0.01 0.001 0.1 2012 Microchip Technology Inc. ESR Curves Instable Unstable Stable only with Tantalum or Electrolytic cap. Stable Tantalum, Electrolytic and Ceramic cap. Instable Unstable 1 10 Load Capacitor [uF] MCP2025 with 1000 100 DS22306A-page 17 ...

Page 18

... MCP2025 2.4 AC Specification V 6.0V to 18.0V CHARACTERISTICS Parameter Sym. Bus Interface - Constant Slope Time Parameters (DC specifications are for a V Slope rising and falling t SLOPE edges Propagation Delay of t TRANSPD Transmitter Propagation Delay of t RECPD Receiver Symmetry of Propagation t RECSYM Delay of Receiver rising edge w.r.t. falling edge ...

Page 19

... Thermal Resistance, 8-QFN Note 1: The maximum power dissipation is a function of T allowable power dissipation at an ambient temperature is P exceeded, the die temperature will rise above 150C and the MCP2025 will go into thermal shutdown. 2012 Microchip Technology Inc. -40°C to 125°C A Min ...

Page 20

... MCP2025 2.6 Timing Diagrams and Specifications FIGURE 2-2: BUS TIMING DIAGRAM TXD 50% L BUS RXD FIGURE 2-3: REGULATOR BUS WAKE TIMING DIAGRAM L BUS V REG-NOM V REG DS22306A-page 20 50% t TRANSPDF t RECPDF 50% V WK(LBUS BACTIVE BDB .95V LBUS .50V BB .05V LBUS 0.0V t TRANSPDR t RECPDR 50% t VEVR 2012 Microchip Technology Inc. ...

Page 21

... BBQ TEMPERATURE - 5. -45 - Temperature(⁰C) 2012 Microchip Technology Inc. t CSR t VEVR VS. FIGURE 2- 12V 2 18V 1 0 -45 130 6V 12V 18V 130 MCP2025 V REG-NOM t RPD t CSPD I POWER-DOWN VS. BBQ TEMPERATURE - 5.0V 6V 12V 18V - 130 Temperature(⁰C) DS22306A-page 21 ...

Page 22

... MCP2025 FIGURE 2-8: TYPICAL I BBQ TEMPERATURE - 3.3V 200 180 160 140 120 100 -45 - Temperature(⁰C) FIGURE 2-9: I TRANS-OFF VS. BBQ TEMPERATURE - 3. -45 - Temperature(⁰C) DS22306A-page 22 VS. FIGURE 2-10 12V 18V 1 0 -45 130 6V 12V ...

Page 23

... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2012 Microchip Technology Inc. MCP2025 Example 202550 E/ ...

Page 24

... MCP2025 8-Lead Plastic Dual Flat, No Lead Package (MD) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22306A-page 24 4x4x0.9 mm Body [DFN] Microchip Technology Drawing C04-131E Sheet 2012 Microchip Technology Inc. ...

Page 25

... Plastic Dual Flat, No Lead Package (MD) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2012 Microchip Technology Inc. MCP2025 4x4x0.9 mm Body [DFN] Microchip Technology Drawing C04-131E Sheet DS22306A-page 25 ...

Page 26

... MCP2025 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22306A-page 26 2012 Microchip Technology Inc. ...

Page 27

... PLO %RG >3',3@ 1RWH N NOTE 1RWHV 2012 Microchip Technology Inc MCP2025 c DS22306A-page 27 ...

Page 28

... MCP2025 Note: DS22306A-page 28 2012 Microchip Technology Inc. ...

Page 29

... Note: 2012 Microchip Technology Inc. MCP2025 DS22306A-page 29 ...

Page 30

... MCP2025 /HDG 3ODVWLF 6PDOO 2XWOLQH 61 ± 1DUURZ PP %RG >62,&@ 1RWH DS22306A-page 30 2012 Microchip Technology Inc. ...

Page 31

... APPENDIX A: REVISION HISTORY Revision A (June 2012) Original Release of this Document. 2012 Microchip Technology Inc. MCP2025 DS22306A-page 31 ...

Page 32

... MCP2025 NOTES: DS22306A-page 32 2012 Microchip Technology Inc. ...

Page 33

... Device Temperature Package Range Device: MCP2025: LIN Transceiver with Voltage Regulator MCP2025T: LIN Transceiver with Voltage Regulator (Tape and Reel) (SOIC and DFN only) Temperature Range -40°C to 125°C Package Plastic DIP (300 mil Body), 8-lead SN Plastic Small Outline SOIC, 8-lead MD Plastic Dual Flat DFN, 8-lead  ...

Page 34

... MCP2025 NOTES: DS22306A-page 34 2012 Microchip Technology Inc. ...

Page 35

... Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2012, Microchip Technology Incorporated, Printed in the U ...

Page 36

... Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-5778-366 Fax: 886-3-5770-955 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2012 Microchip Technology Inc. 11/29/11 ...

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