US168
LOW NOISE AND LOW VOLTAGE
SINGLE-COIL
FAN DRIVER
LOW EMI EMISSIONS AND LOW ACOUSTIC NOISE
One-chip solution for driving tiny single-coil brushless DC (BLDC) fans and motors.
US168
The US168 is a one-chip solution for driving single-coil brushless DC (BLDC) fans and motors. The use of linear Soft
switching realizes low acoustic noise performance without introducing electromagnetic (EMI) noise. This avoids the
need for expensive filter components to achieve automotive certification. Additionally the linear driving, in combination
with the ultra-thin (0.4mm height) package , with 3mm
2
footprint, allows to use the fandriver in ultra thin fans (< 1cm
height), including fans with coils embedded into the PCB. The US168 device includes reverse voltage protection, locked
rotor protection and thermal protection. Therefore, the IC robustness perfectly suits for consumer and automotive-
on-board applications.
KEY FEATURES
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Soft switching for low noise
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Low supply voltage: 1.8 to 6.5 volt
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Full bridge driver
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High sensitivity integrated Hall sensor
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Low power consumption
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Reverse voltage protection
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Locked rotor protection and auto-restart
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Thermal protection and auto-restart
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No external components needed
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Tachometer output signal (FG)
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Ultra thin (0.4mm) UTDFN 6L 1.5x2mm
V1/21-12-17
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 fitness 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 fit 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 equipment are specifically 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.
FOR MORE INFORMATION: WWW.MELEXIS.COM/US168
The hummingbird’s beating wings flap at extremely high
frequencies, typically around 50 times per second. This allows it
to fly at speeds exceeding 15 m/s, to fly backwards or to seemingly
be suspended in the air in perfect balance. What better animal to
reflect the motor/control driver and actuator capacities?
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