TLE4946K Datasheet, PDF (10/19 Pages) Infineon Technologies AG – High Precision Bipolar Hall-Effect Latch

TLE4946K
Electrical and Magnetic Parameters
5
Electrical and Magnetic Parameters
Table 5
Electrical Characteristics ¹⁾.
Parameter
Symbol
Limit Values Unit Conditions
min. typ. max.
Supply current
I_S
2
Reverse current I_SR
0
Output saturation V_QSAT –
voltage
4
6
mA V_S = 2.7 V ... 18 V
0.2 1
mA V_S = – 18 V
0.3 0.6 V
I_Q = 20 mA
Output leakage
current
I_QLEAK
–
0.05 10 µA for V_Q = 18 V
Output fall time
t_f
Output rise time
t_r
–
0.02 1
µs R_L = 1.2 kΩ; C_L = 50 pF
–
0.4 1
µs ^{see: Figure 3 “Timing}
Definition” on Page 9
Chopper frequency f_OSC
–
Switching
frequency
f_SW
0
Delay time ³⁾
t_d
–
Output jitter ⁴⁾
t_QJ
–
Power-on time ⁵⁾
t_PON
–
Thermal resistance R_thJA
–
6)
320 –
kHz
–
15 ²⁾ kHz
13 –
1
–
13 –
100 –
µs
µs_RMS Typical value for square
wave signal 1 kHz
µs V_S ≥ 2.7 V
K/W SC59
1) over operating range, unless otherwise specified. Typical values correspond to V_S =12 V and T_A = 25°C
2) 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 - 3 dB corner frequency of the low pass filter in the signal path.
3) Systematic delay between magnetic threshold reached and output switching
4) Jitter is the unpredictable deviation of the output switching delay
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
Calculation of the ambient temperature (SC59 example)
e.g. for V_S = 12.0 V, I_Styp = 4 mA, V_QSATtyp = 0.3 V and I_Q = 20 mA :
Power Dissipation: P_DIS = 54.0 mW.
In T_A = T_j – (R_thJA × P_DIS) = 175°C – (100 K / W × 0.054 W)
Resulting max. ambient temperature: T_A = 169.6°C
Note: Typical characteristics specify mean values expected over the production spread.
Data Sheet
7
Rev 1.0, 2007-09