WSH133

WSH133
Bipolar Hall Effect Switch IC with built-in pull high resistor
Features:
z Operates from 2.4V to 24V supply voltage
z Operates with magnetic fields from DC to 15kHz
z On-chip Hall Sensor and 25kΩ pull-high resistor
z On-chip temperature compensation circuitry minimizes shifts in on and off points
and hysteresis over temperature and supply voltage
z Ideal sensor for speed measurement, revolution counting, positioning, DC
Brushless motor.
Functional Description :
WSH133 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 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. WSH133 are rated for operation
over temperature range from –40˚ C to 125 ˚C and voltage ranges from 2.4V to 24V.
Pin Descriptions:
Name
P/I/O
Vdd
P
Gnd
O
Vout
O
Pin#
1
2
3
Description
Positive Power Supply
Ground
Output Pin
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23
WSH133
Absolute Maximum Rating (at Ta=25˚ C)
Supply Voltage
Vcc -------------------------Output breakdown Voltage
Vout(breakdown) ---------------Magnetic flux density
B -------------------------Output ON Current (continuous) Ic --------------------------
26V
26V
Unlimited
20 mA
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
(-40˚C to +125˚C)
(-65˚C to +150˚C)
500mw
Ta -------------------------Ts -------------------------Pd --------------------------
Electrical Characteristics:
(T=+25˚C, Vcc=2.4V to 24V)
Characteristic
Symbol Test Conditions
Min
Typ Max Units
Supply Voltage
Vcc
2.4
24
V
─
─
Output Saturation
Voltage
Output Leakage
Current
Supply Current
Vout Vcc=12V,Ic=10mA
(sat) B = 0 Guass
Ileakage Vcc=12V, B＜ Brp
─
0.2
0.6
V
─
<0.1
10
uA
Isupply Vcc=12V, B＞ Bop
─
2.4
4
mA
Function Block:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23
WSH133
Magnetic Characteristics:
Characteristic
Symbol
Grade
Min.
Operating Point
Bop
1
Release Point
Brp
1
Hysteresis Window
Bhys
Typ.
Max.
Unit
+5
+ 90
Gauss
-90
-5
Gauss
140
Gauss
100
*+ mean South magnetic field, 1mT=10 Gauss
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23
WSH133
Package Information:
TO-92S:
SOT23:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2013/5/23