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ATS477

Anachip
Part Number ATS477
Manufacturer Anachip
Description Single Phase Hal Efect Latch
Published Aug 13, 2007
Detailed Description www.DataSheet4U.com ATC Single Phase Hall Effect Latch „ Features - On-chip Hall sensor - Bi-direction H type output dr...
Datasheet PDF File ATS477 PDF File

ATS477
ATS477

Overview
www.
DataSheet4U.
com ATC Single Phase Hall Effect Latch „ Features - On-chip Hall sensor - Bi-direction H type output drivers for single coil - Internal bandgap regulator allows temperature compensated operations and a wide operating voltage range - High output sinking capability up to 250mA - Operating voltage: 3.
5V~20V - Low output switching current noise - Build-in shunt Zener protection for output driver - SOP-7L provide FG output pin - Package: SIP-4L and SOP-7L ATS477 „ General Description ATS477 that integrates Hall sensor with output drivers is designed for electrical commutation of brush-less DC motor application.
The device includes on-chip Hall voltage generator for magnetic sensing, the error amplifier that amplifies the Hall voltage, a comparator that is to provide switching hysteresis for noise rejection, the bi-direction drivers for sinking and driving large current load, and the frequency generator (FG) that provides a signal proportional to rotation speed.
Internal bandgap regulator is used to provide temperature compensated bias for internal circuits and allows a wide operating supply voltage range.
Built-in protection circuit and output shunt Zener diodes were applied for protecting output drivers during operating.
If a magnetic flux density is larger than threshold Bop, DO is turned to sink and DOB is turned to drive.
The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned to drive and DOB turned to sink.
ATS477 is rated for operation over-temperature range from -20 oC to 85 oC and voltage range from 3.
5V to 20V.
The devices are available in low cost die forms or rugged SIP-4L and power SOP-7L packages.
„ Applications - Single-coil Brush-less DC Fan - Single-coil Brush-less DC Motor „ Ordering Information ATS477 X - X X X - X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP-4L S: SOP-7L Lead L : Lead Free Blank: Normal Packing Blank : Tube or Bulk A : Tape & Reel Magnetic Cha...


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