for more information: www.melexis.com/MLX90297-S bringing 12v capability to tiny fan applications MLX90297-S 12?v pwm MLX90297-S key features k all-in-one single coil fan driver with low bom cost k high magnetic sensitivity k wide operating voltage range from 3.0 v to 18 v k wide pwm input frequency range from 100 hz to 100 khz k soft start: suppresses start peak current while ensuring reliable fan start-up k minimum speed setting k resistor confgurable speed curve with minimum speed setting and adjustable slope k soft switching: optimum low noise performance at any rotation speed k integrated current limiting of the output driver: reduces bom (no shunt required), safe operation with low motor coil resistance k built-in pwm input resistor: reduces bom and wire-break protection k integrated protection: locked rotor, brown-out, thermal shutdown, fg/rd output short circuit k high esd protection: 9,000 v human body model k package options: utdfn8 2.5x2.0, 0.4mm height the above information is as is and believed to be correct and accurate. melexis disclaims any and all liability in connection with or arising out of the furnishing, application or use of the information or products; any and all liability, including without limitation, special, consequential or incidental damages; and any and all warranties, express, statutory, implied, or by description, including warranties of ftness for particular purpose, non-infringement and merchantability. melexis reserves the right to change it at any time and without notice. users should obtain the latest version of the information to verify it is current. users must further determine the suitability of a product for its application, including the level of reliability required and determine whether it is ft for a particular purpose. export control regulations may apply and export might require a prior authorization from competent authorities. melexis products are intended for use in normal commercial applications. unless otherwise agreed upon in writing, the products are not designed, authorized or warranted to be suitable in applications requiring extended temperature range and/or unusual environmental requirements. high reliability applications, such as medical life-support or life-sustaining e quipment are specifcally not recommended by melexis. melexis products are sold under the melexis terms of sale, which can be found at https://www.melexis.com/en/legal/terms-and-conditions. the hummingbirds beating wings fap at extremely high frequencies, typically around 50 times per second. this allows it to fy at speeds exceeding 15 m/s, to fy backwards or to seemingly be suspended in the air in perfect balance. what better animal to refect the motor/control driver and actuator capacities? the MLX90297-S is the shrinked version of the mlx90297-a. it offers the same one-chip fan driver functionality for driving single-coil brushless dc motors, into the ultr a-thin (0.4mm) dnf8 package, with a footprint of only 5mm 2 . the motor speed can be controlled in a highly effcient way through pwm switching of the output half-bridge drivers. the speed control is done through a pwm input signal. the speed transfer curve can be confgured by tuning external resistors. single-coil fan driver v1/21-12-17
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