MLX92211 Datasheet, PDF (1/13 Pages) Melexis Microelectronic Systems – 3-Wire Hall Effect Latch

MLX92211-AxA
3-Wire Hall Effect Latch
Features and Benefits
 Wide operating voltage range : from 2.7V to 24V
 Chopper-stabilized amplifier stage
 Built-in negative temperature coefficient
 Reverse Supply Voltage Protection
 Output Current Limit with Auto-Shutoff
 Under-Voltage Lockout Protection
 Thermal Protection
 High ESD rating / Excellent EMC performance
Application Examples
 Automotive, Consumer and Industrial
 Solid-state switch
 3-phase BLDC motor commutation
 Wiper motor
 Window lifter
 Sunroof/Tailgate opener
 Seat motor adjuster
 Electrical power steering
Part No.
MLX92211LUA-AAA-000-BU
MLX92211LUA-ADA-000-BU
MLX92211LSE-AAA-000-RE
MLX92211LSE-ACA-000-RE
MLX92211LSE-ADA-000-RE
Ordering Information
Temperature Code
Package Code
L (-40°C to 150°C)
UA (TO92-3L)
L (-40°C to 150°C)
UA (TO92-3L)
L (-40°C to 150°C)
SE (TSOT-23)
L (-40°C to 150°C)
SE (TSOT-23)
L (-40°C to 150°C)
SE (TSOT-23)
Comment
B_OP/B_RP= ± 3mT, TC = -1100 ppm/°C
B_OP/B_RP= ± 14mT, TC = -2000 ppm/°C
B_OP/B_RP= ± 3mT, TC = -1100 ppm/°C
B_OP/B_RP= ± 3mT, TC = -2000 ppm/°C
B_OP/B_RP= ± 14mT, TC = -2000 ppm/°C
1 Functional Diagram
VDD
Voltage Regulator
with Reverse Polarity
Protection
Temperature
Compensation
Bop/Brp
reference
Under-
Voltage
Lockout
Thermal
Protection
Switched
Hall
Plate
CDS
Amplifier
Open-Drain
Output
OUT
Control
Current
Limit &
Auto-Shutoff
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.
GND
2 General Description
The Melexis MLX92211 is the second generation Hall-
effect latch designed in mixed signal CMOS technology.
The device integrates a voltage regulator, Hall sensor with
advanced offset cancellation system and an open-drain
output driver, all in a single package. Based on a brand
new 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 is implemented a
negative temperature coefficient to compensate the
natural behaviour of magnets becoming weaker with rise
in temperature.
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.
With latching magnetic characteristics, the output is
turned low or high respectively with a sufficiently strong
South or North pole facing the package top side. When
removing the magnetic field, the device keeps its previous
state.
390109221101
Rev. 007
Page 1 of 13
www.melexis.com
Datasheet
Jan/15