TLE4966V-1K_15 Datasheet, PDF (12/24 Pages) Infineon Technologies AG – In Plane Sensing with Vertical Dual Hall Effect Latch for Automotive Applications

TLE4966V-1K
Functional Description
2.4
Start-up Behavior
The magnetic threshold exhibit a hysteresis Bhys = Bop - Brp. In case of a power-on with a magnetic field B within
hysteresis (B_rp < B < B_op) the output of the sensor is set to the pull up voltage level “V_q” per default. After the first
crossing of B_op or B_rp of the magnetic field the internal decision logic is set to the corresponding magnetic input
value.
V_DDA is the internal supply voltage which is following the external supply voltage V_DD.
This means for B > B_op the output is switching for B > B_rp and B_op > B > Brp the output stays at V_Q
VDDA
tPon
3.5V
Power on ramp
V_Q
Magnetic field above threshold
B > B_OP
VQ
Magnetic field below threshold
B < BRP
V_Q
Magnetic field in hysteresis
B_OP > B > B_RP
The device always applies
V_Q level at start -up
t
independent from the
applied magnetic field !
t
t
t
Figure 2-5 Start-up behavior of the at different magnetic start conditions
Data Sheet
12
Revision 1.0, 2014-05-13