US5881LSE-AAA-000-RE Melexis, US5881LSE-AAA-000-RE Datasheet - Page 7

• Manufacturer Part Number: US5881LSE-AAA-000-RE
• Description: US5881 Series 3.5 to 24 V SMT Unipolar Hall Switch - Low Sensitivity - SOT-23-3
• Manufacturer: Melexis

12 Application Informatio
12.1 Typical Three-Wire Applica
12.3 Automotive and Harsh, No
13 Application Comments
For proper operation, a 100nF bypass
the V
For reverse voltage protection, it is rec
When using a resistor, three points are
When using a diode, a reverse current
Therefore, a 100 /0.25W resistor for 5V
Both solutions provide the required rev
When a weak power supply is used or
recommended that figure 13.3 from the
The low-pass filter formed by R1 and C
occurring on the device supply voltage
3901005881
Rev 008
DD
Three-Wire Circuit
and ground pin.
- the resistor has to limit the re
- the resulting device supply v
- the resistor has to withstand
age V
nd the power dissipated in reverse voltage condition (P
ent cannot flow and the voltage drop is almost constant
the Application Information section is used.
on
ts
or when the device is intended to be used in noisy envi
lication Circuit
Noisy Environments
s capacitor should be placed as close as possible to t
voltage V
commended to connect a resistor or a diode in series
everse current to 50mA maximum (V
e important:
5V application and a diode for higher supply voltage
verse voltage protection.
C1 and the zener diode Z1 bypass the disturbances
DD
. The diode D1 provides additional reverse volta
DD
Page 7 of 11
has to be higher than V
Unipolar Hall Switch – Lo
12.2 Two-Wire
Note:
With this circuit, p
currents can be de
two connecting wi
The resistors RL a
to bias the input c
part specifications
B
B
DD
RP
OP
CC
min (V
:
: I
/ R1 ≤ 50mA)
I
OFF
ON
DD
= I
= I
= V
be detected using only
OFF
R
ons for limiting values.
tant (≈0.7V).
Low Sensitivity
re Circuit
+ I
+ I
CC
es with the V
e are recommended.
precise ON and OFF
+ I
+ I
current. Refer to the
P
tage protection.
C
and Rb can be used
vironment, it is
ires.
the device between
)
or voltage spikes
D
US5881
DD
– R1.I
OUT
= V
= V
= I
CC
Data Sheet
Mar/12
DD
DD
OFF
2
/R
)
/ R1)
+ V
DD
b
+ I
pin.
DD
DD
/R
L