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Product Detailed Parameters
- Description：IC MOTOR DRIVER 8UTDFN
- Series：-
- Mfr：Melexis Technologies NV
- Package：Bulk
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Driver
- Output Configuration：-
- Interface：PWM
- Technology：-
- Step Resolution：-
- Applications：Fan Motor Driver
- Current - Output：600mA
- Voltage - Supply：3.3V ~ 18V
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：10-VFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The MLX90297LLW-AAF-108-SP is a single-chip fan driver designed for driving single-coil brushless DC motors. It operates within a wide voltage range of 3.3 V to 18 V and supports PWM input frequencies from 100 Hz to 100 kHz. The device features an integrated H-bridge with a current limit of 800 mA, ensuring safe operation for low coil impedance motors. It includes a voltage regulator, Hall sensor with offset elimination, and digital state machine control. The component is housed in a DFN10 3x3 mm package and meets AEC-Q100 automotive standards.
Feature Summary
- Integrates voltage regulator, Hall sensor, and power H-bridge in a single package
- Configurable speed curve via a single external resistor
- Soft start and soft switching mechanisms for low acoustic noise
- Comprehensive protection including overcurrent, thermal shutdown, and reverse polarity
Applications
- Single-coil BLDC motor drives in consumer electronics
- Automotive cooling fan systems
- HVAC unit motor control
- Industrial equipment requiring low-noise fan operation
Procurement Notes
Verify the specific suffix 'LLW' indicates the DFN10 3x3mm package variant, distinct from SOIC-8 versions. Confirm AEC-Q100 qualification status if automotive compliance is required. Check for end-of-life or recommended new design status updates from Melexis prior to finalizing procurement plans.
Selection Notes
Select this part when a compact DFN10 footprint is necessary for high-density PCB designs. It is suitable for applications requiring precise speed control via PWM and configurable acceleration profiles. Ensure the load current does not exceed the 800 mA limit and that the supply voltage remains within the 3.3 V to 18 V operating range.
Part Context
This component belongs to the MLX90297 family of single-coil fan drivers. It shares functional similarities with other variants like the MLX90297KZC but differs in packaging and specific electrical characteristics. The LLW suffix denotes the lead-free, halogen-free DFN10 package option, offering a smaller form factor compared to traditional SOIC packages.
Replacement Considerations
Direct substitutes include other MLX90297 variants with compatible pinouts and electrical specs, such as MLX90297LZC or MLX90297LLW-ABF series parts, provided the package type and current limits match the application requirements.
