WSH130

Winson reserves the right to make changes to improve reliability or manufacturability.

©Winson, 2013/5/23

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

Functional Description :

WSH130 is designed to integrate Hall sensor with output driver together on the same

chip, it is suitable for speed measurement, revolution counting, positioning, and DC

brushless motors. 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. WSH130 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

Pin#

Description

Vdd

P

1

Positive Power Supply

Gnd

O

2

Ground

Vout

O

3

Output Pin

Absolute Maximum Rating (at Ta=25˚ C)

Supply Voltage

Vcc --------------------------

26V

Output breakdown Voltage

30V