Supertex inc. FP0100 Fault Protection Switch with Current Fold-back Features General Description The Supertex FP0100 is a high voltage fault protection switch Up to 100V input voltage protection with current fold-back. It is designed to protect system output Low on resistance 4.0 typical power supplies against over-current or short circuit conditions. Fast switching speed In protection mode, the FP0100 limits the current to 300A. No external supplies needed The FP0100 can be considered as a normally closed switch with a typical switch resistance of 4.0. The peak current Applications allowed to pass through the switch can be set by an external Power supplies resistor across VOUT and RSEN. Once the voltage drop Fast resettable fuse across VIN and VOUT exceeds a nominal value of 3.0V, High side switches the input current will fold-back to 300A. In the off state, the FP0100 can withstand up to 100V. Higher input voltages Data acquisition 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 RSEN VIN + R FP0100 SEN V IN - VOUT LOAD Doc. DSFP-FP0100 Supertex inc. C070113 www.supertex.comFP0100 Pin Configuration Ordering Information Part Number Package Packing VOUT FP0100N8-G 3-Lead SOT-89 2000/Reel -G denotes a lead (Pb)-free / RoHS compliant package RSEN VOUT VIN TO-243AA (SOT-89) ESD Sensitive Device Product Marking Absolute Maximum Ratings Y = Code for year sealed Parameter Value F10YW W = Code for week sealed = Green Packaging V - V , differential input voltage range 0 to +110V IN OUT Package may or may not include the following marks: Si or Maximum junction temperature +125C TO-243AA (SOT-89) Storage temperature range -65 to +150C 1 Typical Thermal Resistance Power dissipation, T 25C 1.6W A Absolute Maximum Ratings are those values beyond which damage to the device may Package ja occur. Functional operation under these conditions is not implied. Continuous operation O of the device at the absolute rating level may affect device reliability. All voltages are 3-Lead SOT-89 133 C/W referenced to device ground. Note: 1. Mounted on FR4 board, 25mm x 25mm x 1.57mm. O Electrical Characteristics (T = 25 C unless otherwise specified) A Sym Parameter Min Typ Max Units Conditions V - V Differential input voltage range 0 - 100 V V = GND, I = 600A IN OUT OUT IN - 260 - mA R = 0 SEN I Peak current - 20 40 mA R = 50 PEAK SEN - 10 20 mA R = 100 SEN I Off current - 300 600 A V - V = 100V, See I-V curve OFF IN OUT R On resistance - 4.0 6.0 I = 20mA, R = 0 ON IN SEN R = 50, I = 90% of I SEN IN PEAK V V trip point to turn off - 3.0 - V TRIP IN - OUT See I-V curve V Switch turn off voltage - - 4.5 V I 600A OFF OFF T Operating junction temperature -40 - +125 C --- J Block Diagram RSEN VIN Switch I PEAK + VOUT Control Control Doc. DSFP-FP0100 Supertex inc. C070113 2 www.supertex.com