WCS1301,1302,1303,1304 Hall Effect Base Current Switch Features: 8.3 mΩ internal conductor resistance Output “Low” when IP>= Iop Output “High” when IP < Irp Wide operating voltage range 2.6~18 V. Low operating current 2.0mA 10K Hz bandwidth Customized Spec. upon request Functional Description : 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 WCS1301~4 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 WCS1301~4 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. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/2/6 WCS1301,1302,1303,1304 Function Block: Electrical Characteristics: Characteristic (T=+25˚C, Vdd=5.0V ) Symbol Test Conditions Supply Voltage Vdd Supply Current Isupply 2.6 ─ 18 V IP =0 A ─ 2.0 5.0 mA IP> =Iop, Isink=10 mA Vdd=5V, IP < Irp ─ ─ 0.2 <0.1 0.6 10 V uA ─ 8.3 ─ mΩ － 10 － kHz － 1.0 10 us － 0.3 1.5 us Vout Saturation Voltage Output Leakage Current Ileakage Primary Conductor Resistance Rprimary IP= ± 5 A Bandwidth Vsat ─ BW Output Rise Time Tr Output Falling Time Tf Min Typ Max Units IP<Irp, RL=2KΩ CL=20pf IP>Iop, RL=2KΩ CL=20pf All output-voltage measurements are made with a voltmeter having an input impedance of at least 100kΩ Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/2/6 WCS1301,1302,1303,1304 Current Characteristics: Charactieristic Operating Point Release Point Hysteresis Current Symbol Iop Irp Ihys (T=+25˚C, Vdd=5.0V ) Part No Min. Typ. Max. WCS1301 0.6 0.8 1.0 WCS1302 1.0 1.5 2.0 WCS1303 2.0 2.5 3.0 WCS1304 3.0 3.5 4.0 WCS1301 0.2 WCS1302 0.5 WCS1303 1.5 WCS1304 2.2 A A 0.2 Application Circuit: Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/2/6 Unit 0.8 A WCS1301,1302,1303,1304 Package Information: Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/2/6