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AH1809

Document number: DS35523 Rev. 3 - 2

1 of 13

www.diodes.com

February 2014

H1809

LOW SENSITIVITY MICROPOWER

OMNIPLOAR HALL-EFFECT SWITCH

Description

The AH1809 is a low sensitivity micro power Omnipolar Hall Effect

switch IC designed for battery powered consumer to home appliance

and industrial equipment such smart e-meters. Based on two Hall

Effect plates and a chopper stabilized architecture the AH1809

provides a reliable solution over the whole operating range. To

support battery and low power applications the design has been

optimized to operate over the supply range of 2.5V to 5.5V and

consumes only 24µW with a supply of 3V.

The single open drain output can be switched on with either a North

or South pole of sufficient strength. When the magnetic flux density

perpendicular to the package (B) is larger than operate point (Bop)

the output is switched on (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 AH1809 is available in SC59, SOT553 and SIP-3L.

Features

• Omnipolar (North or South pole) Operation

• Low Sensitivity

• Single Open Drain Output

• Micropower Operation

• 2.5V to 5.5V Operating Range

• Chopper Stabilized Design Provides

 Superior Temperature Stability

 Minimal Switch Point Drift

 Enhanced Immunity to Stress

• Good RF Noise Immunity

• -40°C to +125°C Operating Temperature

• High ESD

• Small Low Profile SOT553 and Industry Standard SC59 and

SIP-3L Packages

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

TOP View)

SC59

(TOP View)

SOT553

(TOP View)

GND

OUTPUT

SIP-3L

Applications

• Smart E-Meters

• Tamper Protection Switch

• Door, Lids and Tray Position Switch

• Proximity and Position Switches

• Level Detects

• On/Off Switch Digital Contact-Less Switch in Industrial and

Consumer Products

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

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Indice de contenidos

Pagina 1 - OMNIPLOAR HALL-EFFECT SWITCH

AH1809 Document number: DS35523 Rev. 3 - 2 1 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809LOW SENSITIVITY MICROPOWER OMNIPLOAR HA

Pagina 2

AH1809 Document number: DS35523 Rev. 3 - 2 10 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Package Outline Dimensions (cont.) (A

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Pagina 4

AH1809 Document number: DS35523 Rev. 3 - 2 12 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Suggested Pad Layout Please see AP020

Pagina 5 - = +25°C

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AH1809 Document number: DS35523 Rev. 3 - 2 2 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809Typical Applications Circuit Note:

Pagina 7 - XX Y W X

AH1809 Document number: DS35523 Rev. 3 - 2 3 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Absolute Maximum Ratings (Note 6) (@TA

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AH1809 Document number: DS35523 Rev. 3 - 2 4 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Magnetic Characteristics (Note 9 &

Pagina 9 - 0.45/0.67

AH1809 Document number: DS35523 Rev. 3 - 2 5 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Typical Operating Characteristics

AH1809 Document number: DS35523 Rev. 3 - 2 6 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Thermal Performance Characteristics (

Pagina 11

AH1809 Document number: DS35523 Rev. 3 - 2 7 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Marking Information (1) Package Type:

Pagina 12

AH1809 Document number: DS35523 Rev. 3 - 2 8 of 13 www.diodes.com February 2014© Diodes Incorporated AH1809 Package Outline Dimensions (All dimens

Pagina 13

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