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AH180

MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR

SWITCH

AH180

Document number: DS31023 Rev. 17 - 2

1 of 13

www.diodes.com

July 2010

Description

AH180 is a micro-power Omnipolar Hall-Effect switch

designed for portable and battery powered equipment such

cellular phones, PDAs and portable PCs. Based on two Hall-

Effect plates and a chopper stabilized architecture the AH180

provides a reliable solution over the whole operating range.

To support portable and battery powered equipment the

design has been optimized to operate over the supply range

of 2.5V to 5.5V and consumes only 24uW with a supply of 3V.

The single open-drain output switches on with either a north

or south pole of sufficient strength.

When the magnetic flux density (B) is larger than operate

point (Bop), output is switched on (Output pin is pulled low).

The output is turned off when B becomes lower than the

release point (Brp). The output will remain off when there is

no magnetic field.

The AH180 is available in SIP-3L, SC59, DFN2020-3, and

DFN2020-6 packages.

Features

• Omnipolar (north or south pole) operation

• Micropower operation

• Single open drain output

• 2.5V to 5.5V operating voltage

• Chopper stabilized design provides

• Superior temperature stability

• Minimal switch-point drift

• Enhanced immunity to stress

• Good RF noise immunity

• -40°C to 85°C operating temperature

• ESD (HBM) ＞ 5KV for DFN2020-6, DFN2020-3

＞ 6KV for SIP-3L and SC59

• SIP-3L, SC59 (commonly known as SOT23 in Asia)

DFN2020-6, DFN2020-3 packages

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

Pin Assignments

(Top View)

Vdd

GND

Output

(SIP-3L)

1.Vdd

GND 2.

Output

(Top View)

SC59

1. Vdd 2. NC 3. Output

4. NC6. NC

5. GND

(Top View)

DFN2020-6

1. Vdd

3. Output

3. GND

( Top View )

DFN2020-3

Applications

• Cover switch in clam-shell cellular phones

• Cover switch in Notebook PC/PDA

• Contact-less switch in consumer products

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.

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Résumé du contenu

Page 1 - 3. Output

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Page 2 - Cancelling

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Page 4

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Page 5 - Power Dissipation Curve

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Page 6 - L : Lead Free

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Page 7 - ( Top View )

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Page 8 - July 2010

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Page 11 - Sensor location

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