WCS1304 Hall Effect Base Current Switch

The WCS1304 consists of a precise, low-temperature drift hall switch IC with temperature compensation circuit and a current path with typical 8.3 mΩ internal conductor resistance

Winson’s WCS1301,1302,1303 and 1304 provides cheap and convenient solution for current detection in industrial and commercial electronic systems. Typical applications include short circuit detection, load detection and over-current fault detection etc…

The WCS1304 consists of a precise, low-temperature drift hall switch IC with temperature compensation circuit and a current path with typical 8.3 mΩ internal conductor resistance. This extremely low resistance can effectively reduce power loss, operating temperature and increase the reliability greatly. Measured current IP flowing through this conduction path generates a magnetic field which is sensed by the integrated Hall switch IC and output “Low” when IP>=Iop and output “High” when IP<Irp. The terminals of the conductive path are electrically isolated from the sensor leads. This allow the WCS1304 current switch to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques and make system more competitive in cost.

Features of WCS1304

• 8.3 mΩ internal conductor resistance

• Output “Low” when IP>= Iop

• Output “High” when IP < Irp

• Wide operating voltage range 2.6~1 8 V.

• Low operating current 2.0mA

• 10K Hz bandwidth

• Operating Point Iop: Min 3.0Amp; Max 4.0Amp

• Release Point Irp: Min 2.2Amp