TLE4946-2K Datasheet, PDF (5/12 Pages) Infineon Technologies AG – High Precision Hall Effect Latch

High Precision Hall Effekt Latch
TLE4946-2K
1
Product Description
1.1
Overview
The TLE4946-2K is a high precision Hall effect latch
with highly accurate switching thresholds for operating
temperatures up to 150°C.
1.2
Features
• 2.7 V to 24 V supply voltage operation
• Operation from unregulated power supply
• High sensitivity and high stability of the magnetic switching points
• High resistance to mechanical stress by active error compensation
• Reverse battery protection (– 18V)
• Superior temperature stability
• Peak temperatures up to 195°C without damage
• Low jitter (typ. 1 µs)
• High ESD performance (± 4kV HBM)
• Digital output signal
• SMD package SC59
1.3
Target Applications
The TLE4946-2K is an integrated circuit Hall-effect sensor with low switching thresholds and low hysteresis which
make it ideally suited to detect the rotor position in a BLDC motor commutation application.
2
Functional Description
2.1
General
Precise magnetic switching thresholds and high temperature stability are achieved by active compensation circuits
and chopper techniques on chip. Offset voltages, generated by temperature induced stress or overmolding are
canceled and high accuracy is achieved. The IC has an open collector output stage with 20mA current sink
capability. A wide operating voltage range form 2.7V to 18V with reverse polarity protection up to -18V makes the
device suitable for a wide range of applications. A magnetic south pole with field strength above B_op turns the
output on and a magnetic north pole exceeding B_rp turns it off.
Product Name
Hall Effect Latch
FinalDatasheet
Product Type
TLE4946-2K
Ordering Code
SP000472424
5
Package
SC59
Rev.1.0, 2008-09-18