Melexis

Smart LIN driver IC for DC, Stepper and BLDC motor (0.5 A)

MLX81350
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  • Smart LIN driver IC for DC, Stepper and BLDC motor (0.5 A)
  • Smart LIN driver IC for DC, Stepper and BLDC motor (0.5 A)

The MLX81350 is a gen-4 LIN driver for small motors targeting mechatronic applications up to 5 W.
MLX81350: LIN motor driver < 0.5 A

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Top features

  • Motor driver

    • Driver for DC/BLDC/Stepper motor

    • Ron = 3Ω typ. for 1 half-bridge + shunt

    • 2x NFET for each half-bridge

    • on-chip charge-pump for top-NFETs

    • Vds protection for all NFETs

  • Microcontroller

    • MLX16-FX, application CPU + CoProcessor

    • MLX4, communication CPU

    • 2x watch-dog

    • +50 input interrupt controller

    • Common purpose timer

  • Memories split per CPU

    • MLX16-FX memories:

      • 32 KB Flash with ECC

      • 10 KB ROM

      • 2 + 3 KB + RAM

      • 512 B EEPROM with ECC

    • MLX4 memories:

      • 6 KB ROM

      • 512 B RAM

  • Pin-compatible drivers in SO8 and QFN24

    • Compatible with Gen3 MLX81330

    • MLX81350 < 0.5A

  • Periphery

    • Configurable RC-clock 24..40 MHz

    • 4x general purpose IO’s, digital, analog, 1x high-voltage input, UART, SPI, I2C-Master & Slave

    • 5x 16-bit motor PWM timers

    • 2x 16-bit timers

    • 13-bit differential ADC with < 1.2 µs conversion time with multiple channels

    • Differential current sense amplifier

    • 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

    • Operating voltage Vs = 5.5V to 28V

    • Operation down to 3.5V with reduced analog characteristics, down to 3V without losing register content, down to 1.5V with intact RAM memory

    • Low standby current consumption of typ 25µA (max 50 µA) 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

  • Automotive AEC-Q100 qualified

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

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

  • Package RoHS compliant

    • SO8-ep

    • QFN-24

Discover all features
Smart LIN driver IC for DC, Stepper and BLDC motor (0.5 A)  -  MLX81350

Product description

The MLX81350 is a gen-4 LIN driver for small motors targeting automotive mechatronic applications at up to 5W.

The Gen4 brings greater cost efficiency, capacity and additional processing performance, all while maintaining full pin-to-pin compatibility with Gen3 using the same package.

This all-in-one LIN driver offers flash programmability, high robustness, and function density while reducing bill-of-materials (BoM) complexity. By integrating both analog and digital circuitry, it provides a true single-chip solution that is fully compliant with industry-standard for LIN slave nodes.

The MLX81350 enables small-footprint applications to control small BLDC, stepper and DC motors, using either sensored or sensorless field-oriented control (FOC) algorithms.

The MLX81350 is well-suited for

  • small Stepper / BLDC flap or valve, < 0.5Apk per phase
  • small DC flap / valve, or single-coil fan/pump, < 0.7Apk

Smart LIN driver IC for DC, Stepper and BLDC motor (0.5 A)

Features and benefits

  • Motor driver

    • Driver for DC/BLDC/Stepper motor

    • Ron = 3Ω typ. for 1 half-bridge + shunt

    • 2x NFET for each half-bridge

    • on-chip charge-pump for top-NFETs

    • Vds protection for all NFETs

  • Microcontroller

    • MLX16-FX, application CPU + CoProcessor

    • MLX4, communication CPU

    • 2x watch-dog

    • +50 input interrupt controller

    • Common purpose timer

  • Memories split per CPU

    • MLX16-FX memories:

      • 32 KB Flash with ECC

      • 10 KB ROM

      • 2 + 3 KB + RAM

      • 512 B EEPROM with ECC

    • MLX4 memories:

      • 6 KB ROM

      • 512 B RAM

  • Pin-compatible drivers in SO8 and QFN24

    • Compatible with Gen3 MLX81330

    • MLX81350 < 0.5A

  • Periphery

    • Configurable RC-clock 24..40 MHz

    • 4x general purpose IO’s, digital, analog, 1x high-voltage input, UART, SPI, I2C-Master & Slave

    • 5x 16-bit motor PWM timers

    • 2x 16-bit timers

    • 13-bit differential ADC with < 1.2 µs conversion time with multiple channels

    • Differential current sense amplifier

    • 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

    • Operating voltage Vs = 5.5V to 28V

    • Operation down to 3.5V with reduced analog characteristics, down to 3V without losing register content, down to 1.5V with intact RAM memory

    • Low standby current consumption of typ 25µA (max 50 µA) 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

  • Automotive AEC-Q100 qualified

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

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

  • Package RoHS compliant

    • SO8-ep

    • QFN-24

Documents and tools

Application note(s)
Datasheet(s)
Product abstracts(s)
Product flyer(s)
Selection guide(s)
Environmental
IC handling and assembly
Recommended third parties

Related tech talks

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