The MLX81160 is a LIN pre-driver IC for relay DC motors applications like window regulators. It offers high power and 48 KB memory (LIN protocol and 32 KB for the application) in a compact QFN24 package (4mm x 4mm)

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Top features

  • Motor driver

    • 6x Driver for external relays, or 6x Pre-Driver for external PN-FET half-bridges up to 30nC with 6x PWM

  • Microcontroller

    • MLX16-FX, application CPU

    • MLX4, communication CPU

    • Programmable digital watch-dog

    • Interrupt controller

    • Common purpose timer

  • Memories split per CPU

    • MLX16-FX memories:

      • 32 KB Flash with ECC

      • 10 KB ROM

      • 2 KB RAM

      • 512 B EEPROM

    • MLX4 memories:

      • 6 KB ROM

      • 512 B RAM

  • Fast end-of-line programming via LIN pin (32kB Flash in < 2.5sec)

  • Compatible SW for motor IC family

    • MLX81160: 48 KB PN-FET driver

    • MLX81344: 90 KB NN-FET driver

  • Periphery

    • Configurable RC-clock 12MHz to 32MHz

    • 12x general purpose IO’s, up to 9x high-voltage analog inputs, 2x UART, SPI, I2C-slave

    • 6x 16-bit motor PWM timers

    • 2x 16-bit timers

    • 12-bit ADC with < 1.2μs conversion time with 32 channels

    • 2x Differential current sense amplifier with 8-bit programmable overcurrent

    • Temperature sensor, over-temperature detection

    • Over-current detection, over-voltage and under-voltage protection

  • Voltage regulators

    • Internal voltage regulators, directly powered from 12V battery supply

    • IC operating motor voltage VSM = 5.5V to 32V* (*operating voltage up to 38V limited to 24h over lifetime)

    • Operating voltage VS = 5.5V to 32V* (*operating voltage up to 38V limited to 24h over lifetime)

    • Operation down to 3.5V with reduced analog characteristics, down to 3.0V without losing register content, down to 1.6V with intact RAM memory

    • Low standby current consumption of typ 25μA in sleep mode

    • Wake-up possible via LIN, external pins or internal wake-up timer

  • Bus interface

    • LIN 2.x/SAE J2602 and ISO17987-4 compliant LIN slave

  • Package QFN24 4x4 WF

  • Automotive AEC-Q100 qualified

  • Designed for safety applications according to ASIL B (ISO 26262)

  • Maximum IC temperature (with validated mission profile) Tj = 175°C

Discover all features
LIN slave for relay and DC motor control (gen3) - MLX81160

Product description

The MLX81160 is a LIN pre-driver IC for relay DC motors applications.

It offers 48 KB memory (16 KB for the included LIN protocol and 32 KB for the application software) in a compact QFN24 package (4 mm x 4 mm).

By leveraging high-voltage silicon-on-isolator (SOI) technology, this LIN-based pre-driver exhibits operational robustness for 12 and 24 V applications.

The MLX81160 incorporates all the essential functional elements for motor driving within a single chip. These include a LIN interface, an embedded microcontroller unit, 6x PWM drivers, 3x high-voltage I/Os and more…

Extra I/Os allow connecting a dedicated 4-wire latch for motor indexing.

On top of enabling performance improvements and reducing costs, and having the smallest dimensions, the MLX81160 also includes faster programmability (with 32 KB Flash completed in <2.5sec) and ASIL B functional safety capabilities. In addition, the dual current sensing feature permits ripple counting and the driving of multiple DC motors.

Typical actuator applications

  • DC Window Lift, Sunroof with Relays or PN-MOSFETs
  • DC/BLDC pump or fan with PWM-drive and PN-MOSFETs
  • Multiple small DC motors with PN-MOSFETs

For engineering development, the MLX universal master (MUM) can be used to program and interface the IC. For production, third-party equipment & SW must be used.

Contact your local representative for more information.

MLX81160 block diagram

Features and benefits

  • Motor driver

    • 6x Driver for external relays, or 6x Pre-Driver for external PN-FET half-bridges up to 30nC with 6x PWM

  • Microcontroller

    • MLX16-FX, application CPU

    • MLX4, communication CPU

    • Programmable digital watch-dog

    • Interrupt controller

    • Common purpose timer

  • Memories split per CPU

    • MLX16-FX memories:

      • 32 KB Flash with ECC

      • 10 KB ROM

      • 2 KB RAM

      • 512 B EEPROM

    • MLX4 memories:

      • 6 KB ROM

      • 512 B RAM

  • Fast end-of-line programming via LIN pin (32kB Flash in < 2.5sec)

  • Compatible SW for motor IC family

    • MLX81160: 48 KB PN-FET driver

    • MLX81344: 90 KB NN-FET driver

  • Periphery

    • Configurable RC-clock 12MHz to 32MHz

    • 12x general purpose IO’s, up to 9x high-voltage analog inputs, 2x UART, SPI, I2C-slave

    • 6x 16-bit motor PWM timers

    • 2x 16-bit timers

    • 12-bit ADC with < 1.2μs conversion time with 32 channels

    • 2x Differential current sense amplifier with 8-bit programmable overcurrent

    • Temperature sensor, over-temperature detection

    • Over-current detection, over-voltage and under-voltage protection

  • Voltage regulators

    • Internal voltage regulators, directly powered from 12V battery supply

    • IC operating motor voltage VSM = 5.5V to 32V* (*operating voltage up to 38V limited to 24h over lifetime)

    • Operating voltage VS = 5.5V to 32V* (*operating voltage up to 38V limited to 24h over lifetime)

    • Operation down to 3.5V with reduced analog characteristics, down to 3.0V without losing register content, down to 1.6V with intact RAM memory

    • Low standby current consumption of typ 25μA in sleep mode

    • Wake-up possible via LIN, external pins or internal wake-up timer

  • Bus interface

    • LIN 2.x/SAE J2602 and ISO17987-4 compliant LIN slave

  • Package QFN24 4x4 WF

  • Automotive AEC-Q100 qualified

  • Designed for safety applications according to ASIL B (ISO 26262)

  • Maximum IC temperature (with validated mission profile) Tj = 175°C

Documents and tools

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