SBC Gen2 with High-Speed CAN and LIN

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Block Diagram

MC33903 Battery Management Block Diagram

MC33903 Internal Block Diagram


Key Features

  • Voltage regulator for MCU, 5.0 V or 3.3 V, part number selectable, with possibility of usage external PNP to extend current capability and share power dissipation
  • Voltage, current and temperature protection
  • Very low quiescent current in low power modes
  • Fully-protected embedded 5.0 V regulator for the CAN driver
  • Multiple under-voltage detections to address various MCU specifications and system operation modes (i.e. cranking)
  • Auxiliary 5.0 V or 3.3 V SPI configurable regulator, for additional ICs, with over-current detection and under-voltage protection
  • MUX (except 33903B3/5) output pin for device internal analog signal monitoring and power supply monitoring
  • Advanced SPI, MCU, ECU power supply and critical pins diagnostics and monitoring
  • Multiple wake-up sources in low-power modes: CAN or LIN bus, I/O transition, automatic timer, SPI message and VDD over-current detection
  • ISO11898-5 high-speed CAN interface compatibility for baud rates of 40 kb/s to 1.0 Mb/s

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The MC33903 is included in the 15-year program

Part numbers include: MCZ33903B3EK, MCZ33903B5EK, MCZ33903BD3EK, MCZ33903BD5EK, MCZ33903BS3EK, MCZ33903BS5EK, MCZ33903C3EK, MCZ33903C5EK, MCZ33903CD3EK, MCZ33903CD5EK, MCZ33903CP3EK, MCZ33903CP5EK, MCZ33903CS3EK, MCZ33903CS5EK, MCZ33903D3EK, MCZ33903D5EK, MCZ33903DD3EK, MCZ33903DD5EK, MCZ33903DP3EK, MCZ33903DP5EK, MCZ33903DS3EK, MCZ33903DS5EK.


Quick reference to our documentation types.

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5 hardware offerings


1 software file

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

2 engineering services

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