(Hong Kong)
Product Summary
The US90AEVK is a 24V Hall IC Fan Driver. The US90AEVK is a one-chip solution for driving two-coil brushless DC cooling fans. Based on the advanced Melexis CMOS process, the US90AEVK contains a Hall-effect sensor, dynamic offset correction and low side output drivers. Frequency Generator or Rotation Detection is available. The open-drain output makes the connectivity with any external interface such as hardware monitoring or Super I/O IC easier. The applications of the US90AEVK include 12V/24V fans, Peak current up to 500mA.
Parametrics
US90AEVK absolute maximum ratings: (1)Fan Supply Voltage VDD: 30V; (2)Peak Output Current IOUTp: 500mA; (3)Continuous Output Current IOUTc: 250mA; (4)FG / RD Output Current IFG (RD): 20mA; (5)Operating Temperature Range TA: -40 to 85℃; (6)Junction Temperature TJ: 125℃; (7)Storage Temperature Range TS: -55 to 150℃; (8)Magnetic Flux Density B: Unlimited mT.
Features
US90AEVK features: (1)Low cost; (2)High sensitivity Hall Sensor; (3)Locked rotor protection and auto-restart; (4)Power-efficient CMOS and power MOSFETs; (5)Built-in output protection clamping diode; (6)Integrated tachometer (US90A) or alarm (US91A) signal output; (7)2-coil fan driver with FG/RD output in 4-pin VK / VA and 8-pin narrow SOIC packages (all RoHS Compliant).
Diagrams
