FP0100

Supertex inc. FP0100 Fault Protection Switch with Current Fold-back Features ►► Up to 100V input voltage protection ►► Low on resistance – 4.0Ω typical ►► Fast switching speed ►► No external supplies needed Applications ►► Power supplies ►► Fast resettable fuse ►► High side switches ►► Data acquisition General Description The Supertex FP0100 is a high voltage fault protection switch with current fold-back. It is designed to protect system output power supplies against over-current or short circuit conditions. In protection mode, the FP0100 limits the current to 300µA. The FP0100 can be considered as a normally closed switch with a typical switch resistance of 4.0Ω. The peak current allowed to pass through the switch can be set by an external resistor across VOUT and RSEN. Once the voltage drop across VIN and VOUT exceeds a nominal value of 3.0V, the input current will fold-back to 300µA. In the off state, the FP0100 can withstand up to 100V. Higher input voltages can be accommodated by using an external depletion-mode MOSFET. Please refer to Figure 4 for more details. The FP0100 is available in a SOT-89 package. Typical Application Circuit + VIN - VIN RSEN FP0100 VOUT RSEN LOAD Doc.# DSFP-FP0100 C070113 Supertex inc. www.supertex.com FP0100 Ordering Information Part Number Package Packing FP0100N8-G 3-Lead SOT-89 2000/Reel -G denotes a lead (Pb)-free / RoHS compliant package ESD Sensitive Device Pin Configuration VOUT RSEN VOUT VIN TO-243AA (SOT-89) Absolu...