Datasheet LF2117XTMR (Littelfuse)

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ϭϲϬŶWƵƐŚWƵů ^ĞŶƐŽƌ TMR Omnipolar Switch 160nA Push Pull Sensor
W ĞƐĐƌŝƉƚŝŽŶ
>&ϮϭϭϳydDZŝƐĂĚŝŐŝƚĂůŽŵŶŝƉŽůĂƌŵĂŐŶĞƚŝĐƐǁŝƚĐŚƚŚĂƚŝŶƚĞŐƌĂƚĞƐdDZĂŶĚ
Description Z
DK^ƚĞĐŚŶŽůŽŐLJŝŶŽƌĚĞƌƚŽƉƌŽǀŝĚĞŚŝŐŚƉƌĞĐŝƐŝŽŶ͕ůŽǁƉŽǁĞƌĐŽŶƐƵŵƉƚŝŽŶ LF ĂŶ 211 Ě 7 Śŝ XTŐŚ M ƐĞ R i ŶƐŝƚŝ s a d ǀiŝgƚitLJa͘l omnipolar magnetic switch that integrates TMR and CMOS technology in order to provide high precision, low power consumption and high sensitivity. It c /ƚ onĐtŽ aiŶƚ n ĂŝŶƐ s a voĂltǀ a Žůƚ g Ă e g Ő e Ğ n Ő erĞŶ at Ğ orƌĂƚŽƌ , a co͕Ă m Đ p Ž ar ŵ at Ɖ orĂƌĂƚ , a dŽƌ igi͕tĂ a ĚŝŐ l log ŝƚ i Ăů c cůoŽŐ nt ŝĐ ro Đ l ŽŶƚƌŽůŵŽĚƵůĞ͕ mo Ă d ƚ ulŚƌ e ĞƐŚ , a t Ž hr ůĚ es ƚ hƌŝ o ŵ l ŵ d triŝŶŐ m ŵ min ŽĚƵ g m ůĞ o Ă du ŶĚ l Ă e anDK d a C ^Ž MOƵƚƉƵ S ou ƚtĐ p ŝ u ƌĐƵŝ t cir ƚ c͘>&Ϯϭϭϳ uit. ydDZŚĂƐĂ LF ǁŝ 211ĚĞ 7XǁŽ TM ƌŬŝŶŐ R ha ǀŽůƚ s a w ĂŐ id ĞĂ e w Ŷ o Ě r kiƚĞ n ŵƉĞ g voltƌĂƚ ag ƵƌĞ e a ƌ n ĂŶ d teŐĞ m ͘d pe Śŝ ratƐ u ƐĞ r ƌ e rŝĞ a Ɛ ngŝƐ e Ă . ǀĂŝůĂďůĞŝŶĂ Thi ǀĂ s sƌŝĞƚ erieLJŽĨ s i ŵ s av ĂaŐilŶ a Ğ bl ƚŝĐ e i ĨŝĞůĚ n a v ƚ ariŚeƌtĞƐŚŽůĚ y of m Ɛ a gƚŽ n Ɛ etiƵŝƚ c f ǀ ie Ăƌ l ŝ d tŽhƵƐ re Ă s ƉƉ hol ůdŝĐĂƚ s t ŝ o ŽŶƐ͘ suit various applications. LF2117XTMR can provide omnipolar magnetic response with a low
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>&ϮϭϭϳydDZĐĂŶƉƌŽǀŝĚĞŽŵŶŝƉŽůĂƌŵĂŐŶĞƚŝĐƌĞƐƉŽŶƐĞǁŝƚŚĂůŽǁĐƵƌƌĞŶƚ current consumption of 160nA. It detects the magnetic field par ĐŽŶ al e Ɛ l tƵŵ o t Ɖ h ƚŝŽŶ e surŽ faĨϭϲϬŶ ce of t h ͘/ƚ e c ĚĞƚ hi ĞĐ p pa ƚ c Ɛ k ƚ a Ś g Ğŵ e an ĂŐŶ d opĞeƚrŝĐ at Ĩ eŝĞůĚ s wƉ it Ă hi ƌĂůůĞů n a ƚŽƚŚĞƐƵƌĨĂĐĞŽĨ supƚŚĞ pl ĐŚŝ y voltƉ a ƉĂ g Đ e r Ŭ a ĂŐ ng ĞĂ e fr Ŷ o ĚŽƉ m 1. Ğƌ 8 Ă V tƚĞƐ o 5.ǁŝ 5 ƚŚŝ V a Ŷ n Ă d i ƐƵƉƉ s avai ůlLJ a ǀ bl Žů e iƚĂŐ n a ĞƌĂŶ n LG Ő A Ğ 4 ĨƌŽŵϭ͘ϴsƚŽ
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pacϱ͘ϱsĂŶ kage. ĚŝƐĂǀĂŝůĂďůĞŝŶĂŶ>'ϰƉĂĐŬĂŐĞ͘
D Features & Benefits Additional Information
■ T
&ĞĂƚƵ
unneling
ƌĞƐĂŶĚ
Magnetoresist
ĞŶ
ance ■ 1.8V to 5.5V Operating Range technology (TMR)
ĞĨŝƚƐ &ƵŶĐƚŝŽŶĂůůŽĐŬŝĂŐƌĂŵ
■ High Tolerance to External ■ Low power consumption at Magnetic Field Interference 1 d 60nA ƵŶŶĞůŝŶŐDĂŐŶĞƚŽƌĞƐŝƐƚĂŶĐĞ ■ Low S ■ witc ϭ͘ϴs hing P ƚŽϱ͘ϱs oints f KƉĞƌĂ or High ƚŝŶŐZĂŶŐĞ ■ ;dDZͿdĞĐŚŶŽůŽŐ X axis sensing directionLJ Sensitivity ■ ,ŝŐŚdŽůĞƌĂŶĐĞƚŽdžƚĞƌŶĂů ■ Lo■ > w F ŽǁƉŽǁĞƌĐŽŶƐƵ requency at 50Hz ŵƉƚŝŽŶĂƚ ■ Excellent Thermal Stability
/
DĂŐŶĞƚŝĐ&ŝĞůĚ/ŶƚĞƌĨĞƌĞŶĐĞ
Resources Accessories Samples
■ ϭϲϬŶ Operation with North and South Pole ■ >Žǁ^ǁŝƚĐŚŝŶŐWŽŝŶƚƐĨŽƌ ■ yĂdžŝƐƐĞŶƐŝŶŐĚŝƌĞĐƚŝŽŶ ,ŝŐŚ^ĞŶƐŝƚŝǀŝƚLJ
E Functional Block Diagram
■ >Žǁ&ƌĞƋƵĞŶĐLJĂƚϱϬ,nj ■ džĐĞůůĞŶƚdŚĞƌŵĂů^ƚĂďŝůŝƚLJ
Applications
VDD ■ KƉĞƌĂƚŝŽŶǁŝƚŚEŽƌƚŚĂŶĚ ■ Pro ^Ž ximitƵƚŚ y S WŽůĞ witc hes ■ IoT Devices
Reference
■ Medical Devices ■ Low power applications
power supply Clock control module
■ Fluid Level Sensing/Detection
dDZ^ǁŝƚĐŚ TMR dLJƉŝĐĂůƉƉůŝĐĂƚŝŽŶƐŝƌĐƵŝƚ
V ■ bridge
Filter Healthcare: Output module
Output vep
module Threshold selection
V ■ Continuous Glucose Meter ref
module
GND
Z
vrp ■ A
ƉƉůŝĐĂƚŝ
uto-injectors or dr
ŽŶƐ
ug delivery pens ■
Industr
WƌŽdž
ial:
ŝŵŝƚLJ^ǁŝƚĐŚĞƐ ■ /ŽdĞǀŝĐĞƐ ■ Automation
TMR Switch Typical Applications Circuit
■ DĞĚŝĐĂůĞǀŝĐĞƐ ■ >ŽǁƉŽǁĞƌĂƉƉůŝĐĂƚŝŽŶƐ ■ Robotic
z
■ &ůƵŝĚ>ĞǀĞů^ĞŶƐŝŶŐͬĞƚĞĐƚŝŽŶ
Consumer electronics:
■ Robotic and portable devices VDD C
Transportation:
N ■ Off-Highway Vehicles 100nF GND
LF2117XTMR
■ E-Bikes, Two-/Three-Wheelers
Building Automation:
■ Smart gas and eater meter
EŽƚĞ͗
/ƚ ŝƐ ƐƚƌŽŶŐůLJ ƌĞĐŽŵŵĞŶĚĞĚ ƚŚĂƚ ĂŶ ĞdžƚĞƌŶĂů ďLJƉĂƐƐ ĐĂƉĂĐŝƚŽƌ ďĞ ĐŽŶŶĞĐƚĞĚ ŝŶͲĐůŽƐĞͲ ƉƌŽdžŝŵŝƚLJ ƚŽ ƚŚĞs ■ Door and windows position detection ƉŝŶ͘ Output
Notes: 1.
It is strongly recommended that an external bypass capacitor be connected in-close-proximity to the VCC pin. © 2025 Littelfuse, Inc.
1
Specifications are subject to change without notice. VL 10/28/25 ΞϮϬϮϱ>ŝƚƚĞůĨƵƐĞ͕
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/ŶĐ͘ ^ƉĞĐŝĨŝĐĂƚŝŽŶƐĂƌĞƐƵďũĞĐƚƚŽĐŚĂŶŐĞǁŝƚŚŽƵƚ ŶŽƚŝĐĞ͘ ZĞǀŝƐĞĚ͗'͘ ϬϲͬϬϲͬϮϱ