MLX92292
3-wire µPower programmable ASIL B capable Hall Effect Latch/Switch
Datasheet
1
Features and Benefits
Wide operating voltage range: from 3.3V to 18V
Less than 10µA average supply current in µ-Power
Mode
Flexible magnetic thresholds and temperature
coefficient
Integrated self-diagnostic functions activating
dedicated Safe Mode
Reverse supply voltage protection
Under-Voltage Reset protection
Thermal protection
Optional IMC integration for lateral sensing
Customer end-of-line programming
Wide programmable magnetic Latch/Switch range
Developed according to ISO26262-10, 9 as safety
HW element out of context with ASIL-B level
2
Application Examples
Automotive, Consumer and Industrial
Brake light wake-up switch
Electronic Steering Column Lock
Door latch system
Seat positioning
Sunroof/Tailgate opener
Transmission applications
Electrical power steering
3
Ordering Information
Product Code
Temperature Code
Package Code
Option Code
Packing Form Code
MLX92292
MLX92292
MLX92292
MLX92292
MLX92291
MLX92291
MLX92291
Legend:
Temperature Code:
Package Code:
Option Code:
Packing Form:
Ordering example:
L
L
L
L
L
L
L
SE
UA
SE
SE
SE
SE
SE
AAA-000
AAA-000
AAA-200
AAA-001
AAA-200
AAA-201
AAA-202
RE
BU
RE
RE
RE
RE
RE
L (-40°C to 150°C)
SE = TSOT-23L
UA = UA (TO92-3L)
000 => 3 wire hall effect Switch/Latch
200 => IMC version
BU=Bulk | RE = Reel
MLX92292LSE-AAA-001-RE
# 390109229202
Rev.005
Page 1 of 20
Datasheet
Oct/2018
MLX92292
3-wire µPower programmable ASIL B capable Hall Effect Latch/Switch
Datasheet
4
Functional Diagram
VDD
SUPPORTING FUNCTIONS
(incl. Supply System, BGap, POR, RC OSC,
Current Bias, Protections and etc.)
HALL
SENSOR
DIAGNOSTIC
ANALOG
FRONT END
OPEN DRAIN
OUTPUT
OUT
CONTROL LOGIC
EEPROM
GND
# 390109229202
Rev.005
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Datasheet
Oct/2018
MLX92292
3-wire µPower programmable ASIL B capable Hall Effect Latch/Switch
Datasheet
5
General Description
Melexis has made a major advance in magnetic sensing technology that will have widespread implications for
modern automobile design the MLX92292 - effectively represents a whole new way of sensing. This device
delivers switch functions, but unlike existing products on the market it can determine the presence of
magnetic fields that are lateral, not just orthogonal, to it. The uniqueness of this offering is taken further by the
fact that the MLX92292 switch is supporting an ASIL B safety integrity level (in accordance with ISO 26262),
with an array of built-in diagnostic mechanisms available.
Flexibility is a key attribute of the MLX92292. OEM customers can chose straightforward pre-programmed
units, or alternatively they can benefit from the end-of-line (EoL) programming capacity. Through this each
device may be configured (via its output pin) during the OEM production process, so system optimization is
fully realized. The programming facility also enables setting of both magnetic operating points to small
increments across a range spanning -90mT to +90mT (-40mT to +40mT for lateral sensing versions).
The MLX92292 can be specified with standard orthogonal sensitivity or the lateral sensitivity option. The
upshot of lateral sensitivity being that there is potential to replace multiple devices with a single surface
mount unit, thereby saving valuable board space and lowering bill-of-materials costs. This stems directly from
Melexis’ proprietary Integrated Magnetic Concentrator (IMC™) technology, which enables substantial
heightening of signal-to-noise ratios in magnetic field measurement. In addition, the capacity of this
technology to sense laterally allows lower profile system implementations, as the magnet can move alongside
the device rather than having to be above it.
Safeguarding the MLX92292 are reverse supply voltage, thermal, electro-static discharge (ESD) and over-
voltage protections, plus Under-Voltage Reset features. With the capacity to deal with a 40V load dump, it
can be connected directly to the vehicle battery. In order to achieve ASIL B compliance, numerous
diagnostic/monitoring functions have been incorporated, including Hall sensor and analog frontend
diagnostics. The device comprises a full set of programmable reporting features, giving it compatibility with
any existing electronic control unit (ECU) interface. Only the normal application pins are required for this -
without need of additional diagnostic pins and thus simplifying the design concept considerably.
# 390109229202
Rev.005
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Datasheet
Oct/2018
MLX92292
3-wire µPower programmable ASIL B capable Hall Effect Latch/Switch
Datasheet
Table of Contents
1
Features and Benefits ......................................................................................................................... 1
2
Application Examples .......................................................................................................................... 1
3
Ordering Information .......................................................................................................................... 1
4
Functional Diagram ............................................................................................................................. 2
5
General Description ............................................................................................................................ 3
6
Absolute Maximum Ratings ................................................................................................................ 5
7
General Electrical Specifications ......................................................................................................... 6
8
Version specific parameters................................................................................................................ 8
8.1
MLX92292LSE-AAA-000-RE / MLX92292LUA-AAA-000-BU ........................................................... 8
8.2
MLX92292LSE-AAA-200-RE ............................................................................................................. 9
8.3
MLX92292LSE-AAA-001-RE ............................................................................................................. 9
8.4
MLX92291LSE-AAA-200-RE ........................................................................................................... 10
8.5
MLX92291LSE-AAA-201-RE ........................................................................................................... 10
8.6
MLX92291LSE-AAA-202-RE ........................................................................................................... 10
9
Magnetic Behaviour .......................................................................................................................... 12
9.1
Latch Sensor ................................................................................................................................... 12
9.2
Unipolar Switch Sensor .................................................................................................................. 13
10
Functional Safety Capability............................................................................................................ 14
10.1
Sensor Development ................................................................................................................... 14
10.2
Technical Safety Requirements ................................................................................................... 14
10.2.1
TS_RQT_Mission ................................................................................................................... 14
10.2.2
TS_RQT_Safe_Message ........................................................................................................ 15
11
Application Information .................................................................................................................. 16
11.1
Typical Automotive Application Circuit ...................................................................................... 16
11.2
Automotive and Harsh, Noisy Environments Application Circuit.............................................. 16
12
Package Information....................................................................................................................... 17
12.1
UA (TO92-3L) Package Information ............................................................................................ 17
12.2
SE (TSOT-3L) Package Information.............................................................................................. 18
13
Standard information regarding manufacturability of Melexis products with different soldering
processes ............................................................................................................................................. 19
14
ESD Precautions.............................................................................................................................. 19
15
Contact ........................................................................................................................................... 20
16
Disclaimer ....................................................................................................................................... 20
# 390109229202
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Datasheet
Oct/2018
MLX92292
3-wire µPower programmable ASIL B capable Hall Effect Latch/Switch
Datasheet
6
Absolute Maximum Ratings
Parameter
Supply voltage
(1, 2)
Supply voltage (Load Dump)
(1, 4)
Supply current
(
Supply current
(
1
,
2
, 3)
1
,
3
, 4)
Symbol
V
DD
V
DD
I
DD
I
DD
V
DDREV
V
DDREV
I
DDREV
I
DDREV
V
OUT
I
OUT
1
)
1
, 4)
Value
+28V
+ 45V
+20
+50
-24
-30
-20
-40
+28
+20
-0.5
-50
+165
8
1000
Units
V
V
mA
mA
V
V
mA
mA
V
mA
V
mA
°C
kV
V
Reverse supply voltage
(1, 2)
Reverse supply voltage
(
Reverse supply current
(
Reverse supply current
(
Output
1 2
voltage
( , )
1
,
2
, 5)
1
,
4
,
5
)
Output current
(1, 2, 5)
Reverse output voltage
(
Reverse output current
(
1
,
2
)
V
OUTREV
I
OUTREV
T
J
-
-
Maximum junction temperature
(6)
ESD sensitivity – HBM
(7)
ESD sensitivity – CDM
(8)
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
1
2
The maximum junction temperature should not be exceeded
For maximum 1 hour
3
Including current through protection device
4
For maximum 500ms
5
Through protection device
6
For 1000 hours.
7
Human Body Model according AEC-Q100-002 standard
8
Charged Device Model according AEC-Q100-011 standard
# 390109229202
Rev.005
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Datasheet
Oct/2018
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