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Product Detailed Parameters
- Description：IC FAN DRIVER 40V 330MA SOT23-6L
- Series：-
- Mfr：Melexis Technologies NV
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：800mA
- Voltage - Supply：3.2V ~ 32V
- Voltage - Load：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6
- Grade：Automotive
- Qualification：-
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Overview
The MLX90411LZE-BAI-043-RE is an automotive-grade single-coil fan driver from Melexis, designed for 12V and 24V systems. It integrates a high-sensitivity Hall sensor and power stage within a SOT-23-6 package. The device supports a supply voltage range of 3.2V to 40V with a current limit of 330mA. Key features include adaptive commutation for low acoustic noise, open-loop PWM speed control, and a frequency generator output with a 1/16 ratio. It operates across a junction temperature range of -40°C to 150°C and meets AEC-Q100 standards.
Feature Summary
- Integrates a high-sensitivity Hall effect sensor for precise rotor position detection without external components.
- Features adaptive commutation technology that optimizes efficiency and minimizes acoustic noise across the entire operating speed range.
- Provides integrated power clamping up to 40V to protect against back-EMF transients, eliminating the need for external TVS diodes.
- Supports flexible speed control via PWM input with configurable minimum point transfer curves and built-in pull-up or pull-down resistors.
Applications
- Automotive cabin ventilation fans
- Engine cooling system blowers
- Battery thermal management pumps
- Heater core flow control valves
Procurement Notes
Verify the specific suffix 'BAI' configuration against the official datasheet to ensure compatibility with required FG ratios and control logic levels. Confirm AEC-Q100 qualification status for the target automotive environment. Check for obsolescence notices as this component family may have lifecycle restrictions. Ensure PCB layout adheres to the recommended thermal pad specifications for the SOT-23-6 package to maintain reliability at high junction temperatures.
Selection Notes
Select this part when a compact solution is required for low-power automotive fans needing low-noise operation. The 330mA current limit suits small gauge motors where higher currents are unnecessary. Choose this model over consumer variants if automotive reliability and extended temperature ranges are mandatory. Consider alternative packages like UTDFN if board space constraints are more critical than the SOT-23-6 form factor.
Part Context
This component belongs to the MLX90411 series, which offers various configurations for single-coil fan applications. The LZE suffix indicates the SOT-23-6 packaging, while the BAI code specifies the internal configuration including the 40V rating and 330mA limit. This series replaces older discrete solutions by integrating control, sensing, and power stages into a single chip.
Replacement Considerations
Direct substitutes include other MLX90411 variants with identical pinouts but different electrical ratings, such as those with 600mA limits or different FG ratios. Verify that any replacement maintains the same 40V clamp voltage and SOT-23-6 footprint to ensure mechanical compatibility.
