WSH41F

WSH41F is designed to integrate Hall sensor with complementary output drivers and frequency generator together on the same chip, WSH41F is suitable for speed measurement, revolution counting, positioning. The WSH41F includes a temperature compensated voltage regulator, a differential amplifier, a Hysteresis controller, two open-collector output drivers capable of sinking 400mA current load and an open-collector frequency generator capable of sinking 10mA current load. An on-chip protection diode 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 open collector output switches to the appropriate state.

WSH41F are rated for operation over temperature range from 20 to 125 and voltage ranges from 2.8V to 18V.

In SOT-25 package, the built-in FG function can save fan system a lot of cost. The WSH41F is a very economical solution when fan system need FG signal