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Product Detailed Parameters
- Description：IC FAN DRIVER 40V 660MA 6UTDFN
- 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：6-DFN Exposed Pad
- Supplier Device Package：6-UTDFN (2.5x2)
- Grade：Automotive
- Qualification：-
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Overview
The MLX90411LLD-BAA-046-RE is an automotive-grade, low-noise, fully integrated single-coil fan driver IC from Melexis. It features a built-in high-sensitivity Hall effect sensor for adaptive commutation and supports supply voltages from 3V to 28V with a maximum output current of 600mA. The device includes integrated power clamping up to 40V, eliminating the need for external transient voltage suppressors in many applications. It offers flexible speed control via PWM input and provides diagnostic outputs through FG/RD pins. Packaged in a compact 6-UTDFN (2.5x2mm) surface-mount format, it operates within a junction temperature range of -40°C to 150°C.
Feature Summary
- Fully integrated single-coil fan driver with onboard Hall sensor for adaptive commutation
- Integrated 40V power clamp for robust protection against back-EMF without external components
- Supports both open-loop PWM control and closed-loop speed regulation with ±1.5% accuracy
- Programmable diagnostic outputs including FG ratio and RD alarm signals via I²C interface
Applications
- Automotive LED headlight cooling fans
- Car seat ventilation systems
- Sensor cooling fans in vehicle electronics
- Multimedia GPU thermal management in automotive infotainment units
Procurement Notes
Verify that the specific suffix '-RE' corresponds to the reel packaging variant rather than the bulk 'SP' version. Confirm the 600mA output current rating aligns with your load requirements, as other variants may offer different current limits. Ensure the 40V clamp specification matches your system's transient voltage profile. Check AEC-Q100 certification status if strict automotive qualification is required for your production line.
Selection Notes
Select this component when a compact, automotive-rated solution is needed for single-coil fans operating at 12V or 24V systems. Choose this part over consumer versions if ASIL compliance or extended temperature ranges are mandatory. Consider the 40V clamp feature if the application involves direct battery connection or significant load dump scenarios. Evaluate the 600mA limit against peak motor startup currents to ensure adequate margin.
Part Context
This part belongs to the MLX90411 family of intelligent fan drivers designed by Melexis Technologies NV. The 'LLD' designation indicates the 6-UTDFN package type, while 'BAA' specifies the electrical characteristics and pinout configuration. The '046' code typically denotes the specific current and voltage ratings, distinguishing it from other variants like the 023 series which may have lower current capabilities or different clamp voltages.
Replacement Considerations
MLX90411LLD-BAA-046-SP is the same functional device but in bulk packaging instead of reel. MLX90411LLD-BAA-023-RE is a similar device but with different electrical parameters (typically lower current or voltage ratings). Verify pin-to-pin compatibility and electrical specifications before substituting any alternative part numbers.
