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PDF TLE4946H Data sheet ( Hoja de datos )
| Número de pieza | TLE4946H | |
| Descripción | High Precision Hall-Effect Switch | |
| Fabricantes | Infineon Technologies AG | |
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High Precision Hall-Effect Switch
Data Sheet Version 1.0
2003-11-20
TLE4946H
Features
• 2.7V to 24V 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. 1µs)
• High ESD performance (±6kV HBM)
• Digital output signal
• Bipolar version
• SMD package P-SC59-3-2 (SOT-23 compatible)
P-SC59-3-2
Type
TLE4946H
Ordering Code
Q62705K-697
Package
P-SC59-3-2
Functional Description
The TLE4906H is an integrated circuit Hall-effect sensor designed specifically for highly
accurate applications. Precise magnetic switching points and high temperature stability
are achieved by active compensation circuits and chopper techniques on chip.
1 page  
TLE4946H
AC/DC Characteristics
over operating range, unless otherwise specified. Typical values correspond to VS=12V
and TA=25°C.
Parameter
Symbol min. typ. max. Unit Conditions
Supply Current
Reverse Current
Output Saturation Voltage
Output Leakage Current
Output Fall Time
IS
ISR
VQSAT
IQLEAK
tf
2 4 6 mA VS = 2.7V .. 18V
0 0.2 1 mA VS= -18V
- 0.3 0.6 V IQ= 20mA
- 0.05 10 µA for VQ=18 V
- 0.02 1
µs RL= 1.2 kOhm ;CL=50pF;
Figure 3
Output Rise Time
tr - 0.4 1 µs RL= 1.2 kOhm ;CL=50pF;
Figure 3
Chopper Frequency
Switching Frequency
Delay Time2)
Output Jitter3)
fOSC - 320 - kHz
fSW 0 - 151) kHz
td - 13 - µs
tQJ - 1 - µsRMS Typ. Value for Square-Wave
Signal 1kHz
Repeatability of magnetic
thresholds4)
BREP
- 20 - µTRMS Typ. Value for
∆B/∆t>12mT/ms
Power-On Time5)
Thermal Resistance6)
tPON
RthJA
- 13 - µs VS >= 2.7V
- 100 - K/W
P-SC59-3-2
1) To operate the sensor at the max. switching frequency, the value of the magnetic signal
amplitude must be 1.4 times higher than for static fields. This is due to the -3dB corner frequency
of the low pass filter in the signal path.
2) Systematic delay between magnetic threshold reached and output switching.
3) Jitter is the unpredictable deviation of the output switching delay.
4)
5)
6)
BREP is equivalent to the noise constant.
Time from applying VS >= 2.7 V to the sensor
Thermal resistance from junction to ambient.
until
the
output
state
is
valid.
e.g.: VS=12.0 V, IS_typ=4 mA, VQSAT_typ=0.3 V and IQ=20 mA => Power Dissipation Pdis=54.0 mW.
In TA = Tj – (RthJA * Pdis) = 175 °C – (100 K/W * 0.054 W) => TA = 169.6 °C
Data Sheet
5/9
2003-11-20
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TLE4946H.PDF ] | |
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