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AH1802
(Rev.:2007)

MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH

Diodes Incorporated. 

Features

AH1802

MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR

HALL-EFFECT SENSOR SWITCH

General Description

• Micropower operation

• Operation with magnetic field of either north or south

pole (omnipolar)

• 2.5V to 5.5V battery operation

• Chopper stabilized

• Superior temperature stability

• Extremely Low Switch-Point Drift

• Insensitive to Physical Stress

• Good RF noise immunity

• -40°C to 85°C operating temperature

• SC59/Low profile DFN2020-6 package

• ESD (HBM) ＞ 5KV for DFN2020-6

＞ 6KV for SC59

• SC59 (commonly known as SOT23 in Asia) and

DFN2020-6: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

AH1802 is comprised of two Hall effect plates and an open-drain

output driver, mainly designed for battery-operation, hand-held

equipment (such as Cellular and Cordless Phone, PDA). The

total power consumption in normal operation is typically 24 W

with a 3V power source.

Either north or south pole of sufficient strength will turn the output

on. The output will be turned off under no magnetic field. While

the magnetic flux density (B) is larger than operating point (Bop),

the output will be turned on (low), the output is held until B is

lower than release point (Brp), then turned off.

Applications

• Cover switch in clam-shell cellular phones

• Cover switch in Notebook PC/PDA

• Contact-less switch in consumer products

Ordering Information

AH1802-X X X

Package

W : SC59

SN : DFN2020-6

Lead Free

G : Green

Packing

-7 : Taping

Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Device

AH1802-W

AH1802-SN

Package

Code

W

SN

Packaging

(Note 2)

SC59

DFN2020-6

7” Tape and Reel

Quantity

Part Number Suffix

3000/Tape & Reel

-7

3000/Tape & Reel

-7

Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

AH1802 Rev. 2

1 of 7

www.diodes.com

JULY 2007

© Diodes Incorporated

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