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US66
Two-Coil Fan Driver - Low Noise & High Output Current (Alarm output)
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The US66 is a one-chip solution for driving two-coil brushless DC fan and motors. It is especially suitable for relatively high-current rated operation as it can drive up to 600mA continuous output current.
The use of Melexis Soft Switching concept lowers the acoustic and electrical motor noise and provides smoother operation. This efficient solution is combined with an innovative slope control design controllable via a dedicated pin.
The device includes reverse voltage protection, locked rotor protection and thermal protection. Therefore, the IC robustness perfectly suits for consumer and automotive-on-board applications.
The integrated Alarm (RD) output is a safety signal which allow to detect if the fan rotates or not. Since it is an open-drain output, it makes the connectivity with external interface easier.
The device is delivered in RoHS compliant DC package (narrow SOIC8) for automatic soldering.
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Features and Benefits
- Soft Switching for low noise applications
- Slope control setting by dedicated pin
- One-chip solution (Hall + Drivers)
- Advanced Protection (enhanced locked rotor, reverse voltage, thermal, output clamping)
- Integrated alarm signal output
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