NOT RECOMMENDED FOR NEW DESIGN
USE AH1806
AH180N
MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Description
Pin Assignments
( Top View )
The AH180N is a high sensitivity, micro power Omnipolar Hall Effect
switch IC designed for portable and battery powered equipment such
3. OUTPUT
as cellular phones, PDA’ s and portable PC’ s. Based on two sensitive
Hall Effect plates and a chopper stabilized architecture the AH180N
GND 2.
provides a reliable solution over the whole operating range. To
1. VDD
support portable and battery powered equipment the design has been
optimized to operate over the supply range of 2.5V to 5.5V and
SC59 and TSOT23
consumes only 24µA with a supply of 3V.
( Top View )
The single open drain output can switched on with either a North or
NC
1
is larger than operate point (Bop) the output is switched on (pulled
GND
2
low). The output is turned off when B becomes lower than the release
NC
3
5
OUTPUT
4
VDD
South pole of sufficient strength. When the magnetic flux density (B)
point (Brp). The output will remain off when there is no magnetic field.
SOT553
Features
Applications
Omnipolar (North or South pole) Operation
Cover Switch in Clam-Shell or Slide Type Cellular Phones
High Sensitivity
Display Switch for Portable PCs
Single Open Drain Output
On/Off Switch for PDAs and Digital Cameras
Micropower Operation
Contact-Less Switch in Consumer Products
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 +85°C Operating Temperature
ESD (HBM) > 6KV
SC59 (SOT23), TSOT23, and SOT553 Low Profile Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ 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
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