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AH337

SINGLE PHASE HALL EFFECT SWITCH

AH337

Document number: DS31050 Rev. 9 - 2

1 of 9

www.diodes.com

July 2010

Description

AH337 is an unipolar Hall-Effect sensor for contactless

switching applications. The device includes an on-chip Hall

voltage generator for magnetic sensing, an amplifier that

amplifies the Hall voltage, a Schmitt trigger to provide

switching hysteresis for noise rejection, and an open-collector

output. The band-gap regulator allows a wide operating

voltage 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 falls

below Brp. When B is less than Brp, the output is switched

off.

The AH337 is available in SIP-3L and SC59 packages.

Features

• Unipolar Hall-Effect sensor

• 4.2V to 28V 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)

Pin Assignments

(Top View)

Vdd

GND

OUT

SIP-3L

1. Vdd

GND 2.

3. OUT

(Top View)

SC59

Applications

• VCD/DVD Loader, CD/DVD ROM

• Cover Detector

• Speed Measurement

• Home Appliances

• Home Safety

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

AH337

4.2V ~28V

Output

Vdd

GND

1 2 3 4 5 6 7 8 9

Sommario

Pagina 1 - 4.2V ~28V

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 1 of 9 www.diodes.com July 2010 © Diodes Incorporated Description

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 2 of 9 www.diodes.com July 2010 © Diodes Incorporated Pin Descripti

Pagina 3 - Marking side

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 3 of 9 www.diodes.com July 2010 © Diodes Incorporated Electrical Ch

Pagina 4 - Power Dissipation Curve

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 4 of 9 www.diodes.com July 2010 © Diodes Incorporated Performance C

Pagina 5

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 5 of 9 www.diodes.com July 2010 © Diodes Incorporated Ordering Info

Pagina 6 - (Top View)

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 6 of 9 www.diodes.com July 2010 © Diodes Incorporated Marking Infor

Pagina 7 - July 2010

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 7 of 9 www.diodes.com July 2010 © Diodes Incorporated Package Outli

Pagina 8

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 8 of 9 www.diodes.com July 2010 © Diodes Incorporated Package Outli

Pagina 9

AH337SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 9 of 9 www.diodes.com July 2010 © Diodes Incorporated IMPORTAN

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