Update: 28 September, 2023
ATS276/277 are integrated Hall sensors with output drivers, mainly designed for electronic commutation of brush-less DC Fan. This IC internally includes the regulator, protecting diode, Hall plate, amplifier, comparator, and a pair of open-collector outputs (DO, DOB). While the magnetic flux density (B) is larger than operate point (Bop), DO will turn on (low), and meanwhile DOB will turn off (high). Each output is latched until B is lower than release point (Brp), and then DO、DOB transfer each state. For DC fan application, sometimes need to test power reverse connection condition. Internal diode only protects chip-side but not for coil-side. If necessary, add one external diode to block the reverse power.
File format: PDF
Size: -
MD5 Checksum: 37602D468CE3374E9CB2BC2047111160
Publication date: 11 July, 2012
Downloads: -
PDF Link: AnaChip ATS276/277 handbook(1) PDF