BAA-1xx => 2 wire hall effect Switch with integrated capacitor
BAA-0xx => 2 wire hall effect Switch
BU=Bulk | RE = Reel | CA = Ammopack delivery
MLX92241LUA-BAA-1xx-BU
Temperature Code Package Code
L
L
UA
SE
Option Code
BAA-1xx
BAA-0xx
Packing Form
Code
BU
RE
Packing Form:
Ordering example:
REVISION 8 – JANUARY 12, 2017
Page 1 of 19
MLX92241-BAA
2-Wire Hall Effect Switch
5. Functional Diagram
VDD
TEST
Voltage Regulator
with Reverse Polarity
Protection
Temperature
Compensation
Bop/Brp
reference
Under-
Voltage
Lockout
Thermal
Protection
Switched
Hall
Plate
CDS
Amplifier
Output
Current Sink
VDD EoL
programming
Control
EEPROM
GND
6. General Description
The Melexis MLX92241 is based on the Melexis Hall-effect switch latest platform, designed in mixed
signal submicron CMOS technology.
The device integrates a voltage regulator, Hall sensor with advanced offset cancellation system and a
current sink-configured output driver and integrated capacitor all in a single package.
Based on the proven in use platform, the magnetic core is using an improved offset cancellation system
allowing faster and more accurate processing while being temperature insensitive and stress
independent. In addition a pre-programmable temperature coefficient is implemented to compensate the
natural behavior of certain types of magnets becoming weaker with rise in temperature.
The included voltage regulator operates from 2.7 to 24V, hence covering a wide range of applications.
With the built-in reverse voltage protection, a serial resistor or diode on the supply line is not required so
that even remote sensors can be specified for low voltage operation down to 2.7V while being reverse
voltage tolerant.
REVISION 8 – JANUARY 12, 2017
Page 2 of 19
MLX92241-BAA
2-Wire Hall Effect Switch
In an event of a drop below the minimum supply voltage during operation, the under-voltage lock-out
protection will automatically freeze the device, preventing the electrical perturbation to affect the
magnetic measurement circuitry. The output current state is therefore only updated based on a proper
and accurate magnetic measurement result.
The two-wire interface not only saves one wire, but also allows implementation of diagnostic functions as
reverse polarity connection and malfunction detection.
The on-chip thermal protection also switches off the output if the junction temperature increases above
an abnormally high threshold. It will automatically recover once the temperature decreases below a safe
value.
The MLX92241 is delivered in a Green and RoHS compliant Plastic Single-in-Line (TO-92 flat) for through-
hole mount, or PCB-less design with integrated capacitor or in 3-pin Thin Small Outline Transistor (TSOT)
for surface mount process.
REVISION 8 – JANUARY 12, 2017
Page 3 of 19
MLX92241-BAA
2-Wire Hall Effect Switch
Contents
1. Features and Benefits ............................................................................................................................ 1
3. Ordering Information ............................................................................................................................. 1
6. General Description ............................................................................................................................... 2
7. Glossary of Terms .................................................................................................................................. 6
8. Absolute Maximum Ratings ................................................................................................................... 6
9. General Electrical Specifications ............................................................................................................ 7
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Embedded System
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