US5781LSE Melexis Inc, US5781LSE Datasheet - Page 2

• Manufacturer Part Number: US5781LSE
• Description: IC HALL EFFECT SWITCH TSOT-23
• Manufacturer: Melexis Inc
• Type: Unipolar Switchr

Specifications of US5781LSE

• Sensing Range: 15mT Trip, 3.5mT Release
• Voltage - Supply: 3.5 V ~ 24 V
• Current - Supply: 5mA
• Current - Output (max): 50mA
• Output Type: Digital, Open Drain
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SOT-23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: US5781LSETR

Introduction
Solid-state switches have been available for many years. In various applications, Hall- Effect Sensors (Hall ICs)
have replaced mechanical contact switches completely. In the mid 1980’s the ignition points in automobiles
were replaced by Hall ICs. The automotive market now consumes more than 40 million Hall ICs per year.
Melexis has been manufacturing high quality Hall-Effect Sensors and signal conditioning ASICs for nearly a
decade, and has pioneered the next generation of programmable sensors and sensor interfaces.
This section contains some fundamental information about Hall-Effect sensors, magnetics, and the added value
of programmable sensors and sensor interfaces. It is intended to be useful for the novice as well as the expert.
Design Kit Materials
This section refers to magnets and devices which are included in the Melexis Hall-Effect Sensor Design Kit or
the MLX90308 demo kit. Contents of these kits are listed below. These items can be ordered directly from the
factory by contacting Melexis at [phone].
Hall-Effect Sensor Design Kit
Square Neodymium, sample magnet “A” (approximately 200mT)
Cylindrical Neodymium, sample magnet “B” (approximately 380mT)
Gauss meter circuit diagram
MLX90215 linear Hall Effect sensor and calibration chart
Samples of various Melexis Hall ICs
Sensor Interface Demo Kit
MLX90308 demo board
Serial interface cable
MLX90308 programming software (31/2” Diskette)
Note: Kit requires IBM compatible PC with a free COM port
Melexis Reference Magnets
Melexis offers calibrated magnets for use as a reference magnetic field available in 3 ranges. These are for ref-
erence only, and are not calibrated from a traceable source nor are they intended for calibration of any type of
instrumentation. They are intended for programming MLX linear Hall ICs, and for general lab reference.
SDAP-RM-10
SDAP-RM-50
SDAP-RM-100
10mT calibrated reference magnet
50mT calibrated reference magnet
100mT calibrated reference magnet
Section 3 - Applications
3-1
Section 3 - Applications