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AH175

HALL EFFECT LATCH FOR HIGH TEMPERATURE

AH175

Document number: DS31043 Rev. 10 - 2

1 of 9

www.diodes.com

July 2010

Description

AH175 is a single-digital-output Hall-Effect latch sensor for

high temperature operation. The device includes an on-chip

Hall voltage generator for magnetic sensing, an amplifier to

amplify Hall voltage, and a comparator to provide switching

hysteresis for noise rejection, an open-collector output pre-

driver. 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.

The AH175 is available in SIP-3L and SC59 packages.

Features

• Bipolar Hall-Effect latch sensor

• 3.5V to 20V DC operating voltage

• Open collector pre-driver

• 25mA output sink current

• Built-in power reverse protection

• Operating Temperature: -40ºC~+150ºC

• SIP-3L and SC59 packages

(SC59 is commonly known as SOT23 in Asia)

• Green Molding Compound (No Br, Sb) (Note 1)

Pin Assignments

(Top View)

Vcc

GND

OUT

SIP-3L

1. Vcc

GND 2.

3. OUT

(Top View)

SC59

Applications

• Rotor Position Sensing

• Current Switch

• Encoder

• RPM Detection

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

Driver

Control Logic

M: Three Phase Hall Motor

Digital Hall Effect Sensor

Hall Motor Driver

RPM sensing

3 Phase Hall Motor

1 2 3 4 5 6 7 8 9

Indice de contenidos

Pagina 1 - Control Logic

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 1 of 9 www.diodes.com July 2010 © Diodes Incorporated Descr

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 2 of 9 www.diodes.com July 2010 © Diodes Incorporated Pin D

Pagina 3 - Marking side

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 3 of 9 www.diodes.com July 2010 © Diodes Incorporated Elect

Pagina 4 - Power Dissipation Curve

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Pagina 5

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 5 of 9 www.diodes.com July 2010 © Diodes Incorporated Order

Pagina 6 - (Top View)

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 6 of 9 www.diodes.com July 2010 © Diodes Incorporated Marki

Pagina 7 - Package Dimension

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 7 of 9 www.diodes.com July 2010 © Diodes Incorporated Packa

Pagina 8

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Pagina 9

AH175HALL EFFECT LATCH FOR HIGH TEMPERATURE AH175 Document number: DS31043 Rev. 10 - 2 9 of 9 www.diodes.com July 2010 © Diodes Incorporated IMP

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