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MLX92242 Datasheet Preview

MLX92242 Datasheet

2-Wire EoL programmable Hall Effect Latch/Switch

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MLX92242
2-Wire EoL programmable Hall Effect Latch/Switch
1. Features and Benefits
Wide operating voltage range: from
2.7V to 24V
Maximum application flexibility by re-
programming of all sensor functions
Customer End-of-Line programming via
VDD pin in the application module for
system design optimization
Lateral sensing by IMC technology
Wide programmable magnetic
Latch/Switch range
Programmable magnetic hysteresis,
active pole, output polarity
Programmable permanent magnet
Temperature Coefficient compensation -
from 0 to -2000ppm/oC
Integrated self-diagnostic functions
activating dedicated Safe Mode
Reverse supply voltage protection
Under-Voltage Lockout protection
Thermal protection
Integrated capacitor for PCB less designs
HW component Qualified according to
ISO26262-8:13 for use in safety critical
systems
2. Application Examples
Automotive, Consumer and Industrial
Wiper motor
Brake light switch
Window lifter
Door lock
Seatbelt buckle
Seat positioning
Sunroof/Tailgate opener
Transmission applications
Electrical power steering
Speed sensing (motorcycles)
3. Ordering Information
Product Code
MLX92242
MLX92242
Temperature Code
L
L
Package Code
UA
SE
Option Code
AAA-x00
AAA-x00
Packing Form
Code
BU
RE
Table 1: Ordering information
Legend:
Temperature Code:
L(-40°C to 150°C)
Package Code:
UA = TO92-3L | SE = TSOT-3L
Option Code:
000 => 2 wire Hall effect Latch/Switch
100 => 2 wire Hall effect Latch/Switch with Integrated capacitor (UA only)
300 => 2 wire Hall effect Latch/Switch with Integrated capacitor and IMC (UA
only)
Packing Form:
BU = Bulk | RE = Reel | CA=Papertape in Ammopack | CR=Papertape on Reel
Ordering example:
MLX92242LUA-AAA-x00-BU
REVISION 5 SEPTEMBER 28, 2018
3901092242
Page 1 of 20




Melexie

MLX92242 Datasheet Preview

MLX92242 Datasheet

2-Wire EoL programmable Hall Effect Latch/Switch

No Preview Available !

MLX92242
2-Wire EoL programmable Hall Effect Latch/Switch
4. 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
GND
EEPROM
5. General Description
The Melexis MLX92242 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. Lateral sensing option is available by
using the Melexis IMC technology.
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.
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.
REVISION 5 SEPTEMBER 28, 2018
3901092242
Page 2 of 20


Part Number MLX92242
Description 2-Wire EoL programmable Hall Effect Latch/Switch
Maker Melexie
Total Page 20 Pages
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