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AH375

Anachip
Part Number AH375
Manufacturer Anachip
Description Single Phase Hall Effect Latch
Published May 13, 2007
Detailed Description AH375 Single Phase Hall Effect Latch „ Features - 2.2V to 20V DC operation voltage - Temperature compensation - Wide ope...
Datasheet PDF File AH375 PDF File

AH375
AH375

Overview
AH375 Single Phase Hall Effect Latch „ Features - 2.
2V to 20V DC operation voltage - Temperature compensation - Wide operating voltage range - Open drain pre-driver - 25mA maximum sinking output current - Package: SIP3, SOT23 „ General Description AH375 is an integrated Hall effect latched sensor designed for electronic commutation of brush-less DC motor applications.
The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a schmitt trigger to provide switching hysteresis for noise rejection, and open drain output.
An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range.
If a magnetic flux density larger than threshold Bop, DO is turned on(low).
The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned off (high).
„ Applications - Brush-less DC Motor - Brush-less DC Fan - Revolution counting - Speed measurement „ Pin Assignments 375 „ Pin Descriptions Name Vdd GND OUT P/I/O P P O Pin # 1 2 3 Description Positive Power Supply Ground Output Pin 2 (Top view) 375 1 : Vdd 1 3 2 : GND 3 : OUT (SOT23 package) 1 2 3 (SIP package) „ Ordering Information AH375 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP3 W: SOT23 Lead L : Lead Free Packing Blank : Bulk A : Tape & Reel This datasheet contains new product information.
Anachip Corp.
reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product.
No rights under any patent accompany the sale of the product.
Rev.
1.
3 Jan.
09, 2006 1/6 AH375 Single Phase Hall Effect Latch „ Typical Application Circuit +12V D1 R1 2K U1 1 Vdd OUTPUT GND 2 AH375 3 Q1 NPN L1 L2 R2 3K + C1 0.
47uF Q2 NPN + C2 0.
47uF Brush-less DC Fan „ Functional Block Diagrams Vdd 1 Regulator Hall plate 3 2 Amp 2 OUT GND Anachip Corp...


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