FEATURES
D Wide Input Supply Range: −36 V to −80 V D Transient Rating to −100 V D Programmable Current Limit D Programmable Current Slew Rate D Enable Input (EN) D Fault Timer to Eliminate Nuisance Trips D Open-Drain Fault Output (FAULT) D Requires Few External Components D 8-Pin MSOP Package ⋅APPLICATIONS
D −48-V Distributed Power Systems D Central Office Switching D Wireless Base Station DESCRIPTION
The TPS2390 and TPS2391 integrated circuits are hot swap power managers optimized for use in nominal −48-V systems. They are designed for supply voltage ranges up to −80 V, and are rated to withstand spikes to −100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live insertion of plug-in cards and modules in powered systems. Both devices provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single-external capacitor. They also provide single-line fault reporting, electrical isolation of faulty cards, and protection against nuisance overcurrent trips.
Texas Instruments
