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US90A
Two-Coil Fan Driver - High Voltage (Tachometer output)
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The US90A is a one-chip solution for driving two-coil brushless DC cooling fans.
Based on Melexis CMOS process, the IC contains a Hall-effect sensor, dynamic offset correction and low side output drivers.
The Frequency Generator open-drain output makes the connectivity with any external interface easier.
These features are combined with the Melexis patented no-VDD design to fit the IC in a small 4-pin VK package. |
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Features and Benefits
- Low cost
- High sensitivity Hall Sensor
- Locked rotor protection and auto-restart
- Power-efficient CMOS and power MOSFETs
- Built-in output protection clamping diode
- Integrated tachometer signal output
- 4-pin VK/VA and 8-pin narrow SOIC package (both RoHS Compliant)
- Drop-in replacement of US90
Assets
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