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Data Sheet, V1.5, Nov. 2007
Uni- and Bipolar Hall IC Switches for
Magnetic Field Applications
TLE4905L, TLE4935L,
TLE4945L, TLE4945-2L
Sensors
N e v e r
s t o p
t h i n k i n g .
Edition 2007-11
published by Infineon Technologies AG,
Am Campeon 1-12,
81726 München, Germany
©
Infineon Technologies AG 2007.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits,
descriptions and charts stated herein.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon
Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in question
please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of
Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support
device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended
to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is
reasonable to assume that the health of the user or other persons may be endangered.
Uni- and Bipolar Hall IC Switches for
Magnetic Field Applications
TLE4905L, TLE4935L,
TLE4945L, TLE4945-2L
Features
•
•
•
•
•
•
Digital output signal
For unipolar and alternating magnetic fields
Large temperature range
Temperature compensated magnetic performance
Protection against reversed polarity
Output protection against electrical disturbances
PG-SSO-3-2
P-SSO-3-2
Type
TLE4905L
TLE4935L
TLE4935-2L
TLE4945L
Marking
05 L
35 L
35 2
45 L
Package
PG-SSO-3-2
PG-SSO-3-2
PG-SSO-3-2
PG-SSO-3-2
TLE4945-2L
45 2
PG-SSO-3-2
TLE4905/35/45/45-2 L (Unipolar/Bipolar Magnetic Field Switches) have been designed
specifically for automotive and industrial applications. Reverse polarity protection is included on-
chip as is output protection against negative voltage transients.
Typical applications are position/proximity indicators, brushless DC motor commutation,
rotational indexing etc.
Data Sheet
1
2007-05
TLE4905L, TLE4935L, TLE4945L, TLE4945-2L
Pin Configuration
(view on branded side of component)
Center of
sensitive area
2.08
±0.1
1.35
±0.1
1
2
3
V
S
GND
Q
AEP01364
Figure 1
Pin Definitions and Functions
Pin No.
1
2
3
Symbol
Function
Supply voltage
Ground
Output
V
S
GND
Q
Data Sheet
2
V1.5, 2007-11
TLE4905L, TLE4935L, TLE4945L, TLE4945-2L
Circuit Description
The circuit includes Hall generator, amplifier and Schmitt-Trigger on one chip. The internal
reference provides the supply voltage for the components. A magnetic field perpendicular to the
chip surface induces a voltage at the hall probe. This voltage is amplified and switches a Schmitt-
trigger with open-collector output. A protection diode against reverse power supply is integrated.
The output is protected against electrical disturbances.
Threshold
Generator
V
S
1
Hall-
Generator
V
S
V
Ref
3
Q
Amplifier
Schmitt-
Trigger
Output
Stage
AEB01243
2
GND
Figure 2
Block Diagram
Data Sheet
3
V1.5, 2007-11

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