AH1801

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT

SWITCH

AH1801 Rev. 7

1 of 10

FEBRUARY 2009

www.diodes.com

•

Micropower operation

•

Operation with North or South Pole

•

2.5V to 5.5V battery operation

•

Inverted Output-on without Magnet present

•

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

•

Low profile 3 pin SC59 (commonly known as SOT23 in

Asia) and DFN2020-3, DFN2020-6 package

•

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

＞ 6KV for SC59

•

SC59, DFN2020-3 and DFN2020-6: Available in

“Green” Molding Compound (No Br, Sb)

•

Lead Free Finish / RoHS Compliant (Note 1)

AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which

is with two Hall effect plates and a output driver, mainly designed

for battery–operation, hand-held equipment (such as Cellular and

Cordless Phone, PDA). The total operation power is down to

24uW in the 3V supply.

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

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

While the magnetic flux density (B) is larger than operate point

(Bop), the output will be turned off, the output is held until B is

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

Applications

•

Cellular phone

•

PDA

•

Cordless phone

Ordering Information

AH1801 - XX G - 7

Packing

7 : Tape & Reel

Package

Green

W : SC59

SN : DFN2020-6

G : Green

FJ : DFN2020-3

Device

Package

Code

Packaging

(Note 2)

7” Tape and Reel

Quantity

Part Number Suffix

AH1801-WG-7

W

SC59

3000/Tape & Reel

-7

AH1801-FJG-7

FJ

DFN2020-3

3000/Tape & Reel

-7

AH1801-SNG-7

SN

DFN2020-6

3000/Tape & Reel

-7

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.

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.

Features

General Description