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US65 Datasheet(PDF) 1 Page - Melexis Microelectronic Systems |
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US65 Datasheet(HTML) 1 Page - Melexis Microelectronic Systems |
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1 / 12 page  US65 / US66 Two-Coil Low Noise Fan Driver High Output Current 3901090209 Page 1 of 12 Preliminary Datasheet Rev 006 Jan/07 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 tachometer (US65) or alarm (US66) signal output Application Examples 5V/12V DC brushless motors Continuous output current up to 600mA Low noise brushless cooling fans PC, server, laptop cooling fan Power supply cooling fan Large and small fan size Ordering Information Part No. Temperature Code Package Code US65 E (-40°C to 85°C) DC (8-pin narrow SOIC8) US66 E (-40°C to 85°C) DC (8-pin narrow SOIC8) 1 Functional Diagram 2 General Description The US65/66 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. Tachometer (FG) or Alarm (RD) open-drain output is available. It makes the connectivity with external interface such as hardware monitoring or Super I/O IC easier. The device is delivered in RoHS compliant DC package (SMD) for automatic soldering |
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