WSH130NL
Unipolar Hall Effect Switch IC
Features:
Operates from 2.4V to 26V supply voltage with reverse voltage protection
Operates with magnetic fields from DC to 15kHz
On-chip Hall Sensor
On-chip temperature compensation circuitry minimizes shifts in on and off points
and hysteresis over temperature and supply voltage
Ideal sensor for speed measurement, revolution counting, positioning, and DC
brushless motors
On (L) with magnetic
South
pole and Off(H) without magnetic field or with
magnetic
North
pole
Functional Description :
WSH130NL is designed to integrate Hall sensor with output driver together on the
same chip, it is suitable for speed measurement, revolution counting, positioning. It
includes a temperature compensated voltage regulator, a differential amplifier, a
Hysteresis controller and a open-collector output driver capable of sinking up to
20mA current load. An on-chip protection resistor is implemented to prevent reverse
power fault.
The temperature-dependent bias increases the supply voltage of the hall plates and
adjusts the switching points to the decreasing induction of magnets at higher
temperatures. Subsequently, the output can keep switching on/off on more precise
switch point regardless to the ambient temperature. WSH130NL are rated for
operation over temperature range from –40˚ C to 125
˚C
and voltage ranges from
2.4V to 26V.
Pin Descriptions:
Name
P/I/O
Vdd
P
Gnd
O
Vout
O
Pin#
1
2
3
Description
Positive Power Supply
Ground
Output Pin
Absolute Maximum Rating (at Ta=25˚ C)
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23
WSH130NL
Supply Voltage
Magnetic flux density
Reverse Protection Voltage
Output ON Current (continuous)
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
Vcc
B
Vr
Ic
--------------------------
--------------------------
--------------------------
--------------------------
26V
Unlimited
26V
25mA
(-40˚C to +125˚C)
(-65˚C to +150˚C)
500mw
Ta --------------------------
Ts --------------------------
Pd --------------------------
Electrical Characteristics:
(T=+25˚C, Vcc=2.4V to 26V)
Characteristic
Symbol Test Conditions
Min
Typ Max Units
Supply Voltage
Vcc
2.4
26
V
─
─
Output Saturation
Vout Vcc=12V,Ic=10mA
─
0.2
0.6
V
Voltage
(sat) B > Bop
Output Leakage
Ileakage Vcc=12V, B<Brp
uA
─
<0.1 10
Current
Supply Current
Isupply Vcc=12V,Output
2.0
5
mA
─
Open
Output Rise Time
Tr
Vcc=12V,RL=2K
1.0
10
─
μs
Ω
CL=20Pf
Output Falling Time
Tf
Vcc=12V,RL=2K
0.3
1.5
─
μs
Ω
CL=20Pf
Function Block:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23
WSH130NL
Magnetic Characteristics:
Characteristic
Operating Point
Symbol
Bop
Grade
A
B
C
Release Point
Brp
A
B
C
Hysteresis Window
Bhys
*+
mean South magnetic field, 1mT=10 Gauss
Min.
Typ.
Max.
+ 50
+70
+150
Unit
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
+10
+10
+10
10
30
Gauss
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23
stm32/stm8
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