US91A, US90A - (US90A / US91A) 24V Hall IC Fan Driver

Melexis Microelectronic Systems

The US91A by Melexis Microelectronic Systems is a (US90A / US91A) 24V Hall IC Fan Driver. Below is the official datasheet preview.

Datasheet Details

Part number	US91A, US90A
Manufacturer	Melexis Microelectronic Systems
File Size	335.99 KB
Description	(US90A / US91A) 24V Hall IC Fan Driver
Datasheet	US90A_MelexisMicroelectronicSystems.pdf
Note	This datasheet PDF includes multiple part numbers: US91A, US90A. Please refer to the document for exact specifications by model.
Additional preview pages of the US91A datasheet.

The US90A/91A is a one-chip solution for driving two-coil brushless DC cooling fans.

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 (US90A) or alarm (US91A) signal output 2-coil fan driver with FG/RD output in 4-pin VK / VA and 8-pin narrow SOIC packages (all RoHS Compliant).

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Published: Jun 5, 2010 |