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MLX92231LSE-AAA-xxx-RE 데이터시트(PDF) 1 Page - Melexis Microelectronic Systems

부품명 MLX92231LSE-AAA-xxx-RE
상세설명  3-Wire Hall Effect Switch
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제조업체  MELEXIS [Melexis Microelectronic Systems]
홈페이지  http://www.melexis.com
Logo MELEXIS - Melexis Microelectronic Systems

MLX92231LSE-AAA-xxx-RE 데이터시트(HTML) 1 Page - Melexis Microelectronic Systems

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MLX92231-AAA-xxx
3-Wire Hall Effect Switch
390109223101 – REV 2
Page 1 of 12
Sept/14
Features and Benefits
 Wide operating voltage range: from 2.7V to 24V
 Accurate switching thresholds
 Reverse Supply Voltage Protection
 Output Current Limit with Auto-Shutoff
 Under-Voltage Lockout Protection
 Thermal Protection
 Traceability with integrated unique ID
 High ESD rating / Excellent EMC performance
 Thin SOT23 3L Green Compliant package
Application Examples
 Automotive, Consumer and Industrial
 Solid-state switch
 Brake sensor
 Clutch sensor
 Sunroof/Tailgate opener
 Steering Column Lock
 Open / Close detection
1 Functional Diagram
2 General Description
The Melexis MLX92231 is a Hall-effect unipolar
switch designed in mixed signal CMOS technology.
The device integrates a voltage regulator, Hall sensor
with advanced offset cancellation system, automotive
qualified EEPROM and an open-drain output driver,
all in a single package.
Based on the existing robust 922xx platform, the
magnetic core has been equipped with a non-volatile
memory that is used to accurately trim the switching
thresholds and define the needed output magnetic
characteristics
(TC,
Bop,
Brp,
Output
pole
functionality).
In addition to that an ID has been integrated on the IC
to have a complete traceability throughout the
process flow.
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.
In the 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 state is
therefore only updated based on a proper and
accurate magnetic measurement result.
The open drain output is fully protected against short-
circuit with a built-in current limit. An additional
automatic output shut-off is activated in case of a
prolonged short-circuit condition. A self-check is then
periodically performed to switch back to normal
operation if the short-circuit condition is released.
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.
VDD
GND
OUT
Open-Drain
Output
Control
Voltage Regulator
with Reverse Polarity
Protection
CDS
Amplifier
Switched
Hall
Plate
Current
Limit &
Auto-Shutoff
Under-
Voltage
Lockout
Thermal
Protection
Bop/Brp
reference
Temperature
Compensation
Ordering Information
Part No.
Temperature Code
Package Code
Comment
MLX92231LSE-AAA-xxx-RE
L (-40°C to 150°C)
SE (TSOT-3L)
RE (Reel)
MLX92231LUA-AAA-xxx-BU
L (-40°C to 150°C)
UA (TO-92)
BU (Bulk)


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