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AH375

Diodes Incorporated
Part Number AH375
Manufacturer Diodes Incorporated
Description SINGLE PHASE HALL EFFECT LATCH
Published Aug 1, 2015
Detailed Description AH375 SINGLE PHASE HALL EFFECT LATCH Description Pin Assignments AH375 is an integrated Hall-Effect latched sensor de...
Datasheet PDF File AH375 PDF File

AH375
AH375

Overview
AH375 SINGLE PHASE HALL EFFECT LATCH Description Pin Assignments 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 band-gap regulator provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply range.
When the magnetic flux density (B) is larger than operate point (Bop), output is switched on (OUT pin is pulled low).
The output state is held on until a magnetic flux density reversal falls below Brp.
When B is less than Brp, the output is switched off.
(Top View) SIP-3L 3.
OUT 2.
GND 1.
Vdd (Top View) GND 2.
SC59 3.
OUT 1.
Vdd The AH375 is available in SIP-3L and SC59 packages.
Features • Bipolar Hall-Effect latch sensor • 2.
2V to 20V DC Operating voltage • Temperature compensation • Open drain pre-driver • 25mA maximum output sink current • Operating temperature: -40°C to +125°C • SIP-3L and SC59 packages (SC59 is commonly known as SOT23 in Asia) • Green Molding Compound (No Br, Sb) (Note 1) Applications • Brush-Less DC Motor • Brush-Less DC Fan • Revolution Counting • Speed Measurement Notes: 1.
EU Directive 2002/95/EC (RoHS).
All applicable RoHS exemptions applied.
Please visit our website at http://www.
diodes.
com/products/lead_free.
html.
Typical Application Circuit Vdd AH375 Document number: DS31172 Rev.
6 - 2 RL C1 AH375 3 2 Output GND 1 of 9 www.
diodes.
com July 2010 © Diodes Incorporated AH375 SINGLE PHASE HALL EFFECT LATCH Pin Descriptions Pin Name Vdd GND OUT P/I/O P P O Pin # 1 2 3 Description Positive Power Supply Ground Output Pin Functional Block Diagram Vdd 1 Regulator Hall plate Amp 23 OUT 2 GND Absolute Maximum Ratings (TA = 25°C) Symbol Vdd B VDS Id TS TJ(MAX) PD Characte...


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