mlx90248 Melexis Company, mlx90248 Datasheet

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mlx90248

Manufacturer Part Number
mlx90248
Description
Micropower & Omnipolar Hall Switch
Manufacturer
Melexis Company
Datasheet

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Features and Benefits
Ordering Information
Part No.
MLX90248
MLX90248
1 Functional Diagram
3901090248
Rev 012
Micropower consumption ideal for battery-
powered applications
Omnipolar, easy to use as output switches
with both North and South pole
Ultra-Thin QFN package (0.43mm max) &
Thin SOT23 3L (both RoHS Compliant)
Very High Sensitivity Hall Sensor
Chopper stabilized amplifier stage
Operation down to 2.5V
Temperature Code
E (-40° C to 85° C)
E (-40° C to 85° C)
Page 1 of 11
Micropower & Omnipolar
Application Examples
2 General Description
The MLX90248 Omnipolar
is fabricated from mixed signal CMOS technology.
It incorporates advanced chopper-stabilization
techniques
magnetic switch points.
The circuit design provides an internally controlled
clocking mechanism to cycle power to the Hall
element and analog signal processing circuits.
This serves to place the high current-consuming
portions of the circuit into a “Sleep” mode.
Periodically the device is “Awakened” by this
internal logic and the magnetic flux from the Hall
element is evaluated against the predefined
thresholds. If the flux density is above or below the
Bop/Brp thresholds then the output transistor is
driven to change states accordingly. While in the
“Sleep” cycle the output transistor is latched in its
previous state. The design has been optimized for
service
operating lifetime in battery powered systems.
The output transistor of the 90248 will be latched
on (BOP) in the presence of a sufficiently strong
South or North magnetic field facing the marked
side of the package. The output will be latched off
(BRP) in the absence of a magnetic field.
Solid State Switch
Handheld Wireless Handset Awake Switch
Lid close sensor for battery-powered devices
Magnet proximity sensor for reed switch
replacement in low duty cycle applications
in
to
Package Code
SE (TSOT-3L)
LD (UTQFN-6L)
applications
provide
MLX90248
TM
accurate
™ ™ ™ ™
requiring
Hall effect sensor IC
Hall Switch
Data Sheet
Sept/06
and
extended
stable

Related parts for mlx90248

mlx90248 Summary of contents

Page 1

... Magnet proximity sensor for reed switch replacement in low duty cycle applications Temperature Code E (-40° 85° (-40° 85° General Description The MLX90248 Omnipolar is fabricated from mixed signal CMOS technology. It incorporates advanced chopper-stabilization techniques magnetic switch points. The circuit design provides an internally controlled clocking mechanism to cycle power to the Hall element and analog signal processing circuits ...

Page 2

... ESD Precautions ........................................................................................................... 8 15 Package Information..................................................................................................... 9 15.1 SE Package (TSOT-3L)...........................................................................................................................9 15.2 LD Package (UTQFN-6L) ......................................................................................................................10 16 Disclaimer.................................................................................................................... 11 3901090248 Rev 012 Micropower & Omnipolar .....................................................................................................................6 A ...................................................................................................................6 DD ....................................................................................................................6 A ..................................................................................................................6 DD ......................................................................................................................6 A ....................................................................................................................6 DD .............................................................................................................7 A Page MLX90248 Hall Switch ™ ™ ™ ™ Data Sheet Sept/06 ...

Page 3

... Table 2: Pin definitions and descriptions Note : Exposed Pad on LD package is connected to ground 3901090248 Rev 012 Micropower & Omnipolar Symbol Value Units ° ° Pin (SE) Pin (LD) Page MLX90248 Hall Switch ™ ™ ™ ™ Ω resistor into each pin. LD Package Data Sheet Sept/06 ...

Page 4

... Rev 012 Micropower & Omnipolar (unless otherwise specified) DD Test Conditions (unless otherwise specified) DD Min Typ Max Units OUT (SE) OUT (LD) Page MLX90248 Hall Switch ™ ™ ™ ™ Min Typ Max Units µ µ LD Package Data Sheet Sept/06 ...

Page 5

... To make a comparison, the MLX90248 consumes 100 times less power than the generic low voltage Melexis Hall sensor US3881. As well as Thin SOT package, the MLX90248 is now delivered in an ultra thin UTQFN package. This new leadless package only requires 3mm important in design where space-saving and miniaturisation are the critical factors ...

Page 6

... Consumption Period vs 100 80 Tawake(us) 60 Tsleep(ms 2.5 Page MLX90248 Hall Switch ™ ™ ™ ™ DD Bops Brps Bopn Brpn 3 VDD (Volts) DD Iawake(mA) Isleep(uA) Iaverage(mA) 3 VDD (Volts) DD Tawake(us) Tsleep(ms) 3 VDD (Volts) Data Sheet Sept/06 3.5 3.5 3.5 ...

Page 7

... Output Saturation Voltage vs Vout (Vdd=2.5V) Vout (Vdd=3V) 40 Vout (Vdd=3.5V -40 - (° Application Information 3901090248 Rev 012 Micropower & Omnipolar 11.8 Output Switching Characteristics MLX90248 Typical application Page MLX90248 Hall Switch ™ ™ ™ ™ Data Sheet Sept/06 ...

Page 8

... ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 3901090248 Rev 012 Micropower & Omnipolar Page MLX90248 Hall Switch ™ ™ ™ ™ Data Sheet Sept/06 ...

Page 9

... SE Package (TSOT-3L) see note 2 TOP VIEW see note 5 END VIEW TOP VIEW 3901090248 Rev 012 Micropower & Omnipolar SIDE VIEW SECTION B-B’ see note 6 Hall plate location END VIEW Page MLX90248 Hall Switch ™ ™ ™ ™ Data Sheet Sept/06 ...

Page 10

... LD Package (UTQFN-6L) 3901090248 Rev 012 Micropower & Omnipolar Page MLX90248 Hall Switch ™ ™ ™ ™ Data Sheet Sept/06 ...

Page 11

... Or for additional information contact Melexis Direct: Europe, Africa, Asia: Phone: +32 1367 0495 E-mail: sales_europe@melexis.com 3901090248 Rev 012 Micropower & Omnipolar www.melexis.com America: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com ISO/TS 16949 and ISO14001 Certified Page MLX90248 Hall Switch ™ ™ ™ ™ Data Sheet Sept/06 ...

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