TLE4946H datasheet(5/9 Pages) INFINEON

5 / 9 page

TLE4946H

Data Sheet

5/9

2003-11-20

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

VS = 2.7V .. 18V

Reverse Current

ISR

0.2

VS= -18V

Output Saturation Voltage

VQSAT

0.3

0.6

IQ= 20mA

Output Leakage Current

IQLEAK

0.05

µA

for VQ=18 V

Output Fall Time

0.02

µs

RL= 1.2 kOhm ;CL=50pF;

Figure 3

Output Rise Time

0.4

µs

RL= 1.2 kOhm ;CL=50pF;

Figure 3

Chopper Frequency

fOSC

320

kHz

Switching Frequency

fSW

kHz

Delay Time

µs

Output Jitter

tQJ

µsRMS Typ. Value for Square-Wave

Signal 1kHz

Repeatability of magnetic

thresholds

BREP

µTRMS Typ. Value for

∆B/∆t>12mT/ms

Power-On Time

tPON

µs

VS >= 2.7V

Thermal Resistance

P-SC59-3-2

RthJA

100

K/W

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) B

REP is equivalent to the noise constant.

5) Time from applying V

S >= 2.7 V to the sensor until the output state is valid.

6) Thermal resistance from junction to ambient.

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

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