Uni- and Bipolar Hall IC Switches for Magnetic Field Applications
Description
Uni- and Bipolar Hall IC Switches for Magnetic Field Applications
TLE 4905 G; TLE 4935 G TLE 4935-2 G; TLE 4945-2 G
Bipolar IC Features • • • • • • Temperature compensated magnetic performance Digital output signal For unipolar and alternating magnetic fields Large temperature range Protection against reversed polarity Output protection against electrical disturbances SOT-89
Type TLE 4905 G TLE 4935 G TLE 4935-2 G TLE 4945-2 G
Marking 05 35 35 2 45 2
Ordering Code Q62705-K402 Q62705-K404 Q62705-K405 Q62705-K403
Package SOT-89 SOT-89 SOT-89 SOT-89
TLE 4905/35/35-2/45-2 (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
2000-07-01
TLE 4905 G; TLE 4935 G TLE 4935-2 G; TLE 4945-2 G
Pin Configuration (top view)
2.
25 ±0.
2
Center of sensitive area
1±0.
2
1
2
3
AEP02150
Figure 1
Pin Definitions and Funtions Pin No.
1 2 3 Symbol Function Supply voltage Ground Output
VS
GND Q
Data Sheet
2
2000-07-01
TLE 4905 G; TLE 4935 G TLE 4935-2 G; TLE 4945-2 G
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
VS
1 HallGenerator
3
Q
VS VRef
Amplifier
SchmittTrigger Output Stage
AEB01243
2 GND
Figure 2
Block Diagram
Data Sheet
3
2000-07-01
TLE 4905 G; TLE 4935 G TLE 4935-2 G; TLE 4945-2 G
Functional Description Unipolar Type T...
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