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US168 Datasheet(PDF) 1 Page - Melexis Microelectronic Systems |
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US168 Datasheet(HTML) 1 Page - Melexis Microelectronic Systems |
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1 / 13 page  US168 / US169 Low Noise & Low voltage Single-Coil Fan/Motor Driver 390109027901 Page 1 of 13 Data Sheet Rev 001 July/06 Features and Benefits Soft Switching for low noise Low supply voltage: 1.8V to 6.5V Full Bridge driver High sensitivity integrated Hall sensor Low power consumption Reverse voltage protection Locked rotor protection and auto-restart Thermal protection and auto-restart Tachometer output signal (US168) or Alarm output signal (US169) Applications Examples 3V / 5V Low Noise BLDC Cooling Fans Low Voltage / Low Power BLDC Motors Notebook DC Fans / Blowers Automotive Low Noise Climate Control Fans Micro-Motors Ordering Information Part No. Temperature Code Package Code US168 E (-40°C to 85°C) SE (TSOT-5L) US169 E (-40°C to 85°C) SE (TSOT-5L) 1 Functional Diagram 2 General Description The US168/169 is a one-chip solution for driving single-coil brushless DC fans and motors. The use of Melexis Soft Switching concept lowers the acoustic and electrical motor noise and provides smoother operation. 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 easier the connectivity with external interface such as hardware monitoring or Super I/O IC. Delivered in a thin and reliable TSOT package, it allows smaller and competitive single-coil fan or motor design, avoiding the need of external components. |
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