I
NTEGRATED
C
IRCUITS
D
IVISION
DS-MX887D-R01 www.ixysic.com 1
Features
• Power Operation (15 W typical at 25°C)
• Omnipolar (switches with N or S pole)
• 2.5V to 5.5V Operation
• Simple Digital Open-Drain Output
• Ultra Low Offset Canceling Amplifiers Provide
Sensitive, Accurate, Stable Switching Points and
Immunity to Mechanical Stress
• Solid State Reliability
• Operating Temperature Range: -40°C to +85°C
• RoHS Compliant TSOT23 3-Lead Package
Applications
• Handheld Portable Devices
• White Goods
• Automotive - Body Systems
• Security Systems
• High Reliability Reed Switch Replacement
Description
The MX887D integrated Hall-Effect switch targets the
requirements of low-power portable devices with
battery operating voltages from 2.5V to 5.5V. On-chip
power management circuitry reduces the effective
average current to just 5A at V
SUPPLY
= 3V
DC
.
The switch output will turn “on” when either a north or
south magnetic pole is applied. The absence of a
magnetic field will set the switch into the
high-impedance “off” state. Emulating the behavior of
a traditional reed switch, together with the advantages
of high integration and solid state reliability, makes the
MX887D an ideal replacement in low-power portable
device applications.
Ordering Information
Figure 1. Functional Block Diagram
Part Description
MX887DHTTR TSOT23 3L Tape & Reel (3000/Reel)
Hall
Sensor
Offset Cancellation
Output
Latch
V
SUPPLY
Output
Switch
Power Management Logic
1
2
3
MX887D
Power Hall-Effect Switch