TPS2398

TPS2398, TPS2399 -48 V Hot Swap Controller for Redundant Supply Systems The TPS2398 and TPS2399 integrated circuits are hot swap power managers optimized for use in nominal −48 V systems. They incorporate an improved circuit breaker response that provides rapid protection from short circuits, while still enabling plug−ins to tolerate large transients that can be generated by the sudden switchover to a higher voltage supply. 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. Features Wide Input Supply: −36 V to −80 V Transient Rating to −100 V Improved Transient Response Εnable Input (EN) Programmable Current Limit Programmable Current Slew Rate Fault Timer to Eliminate Nuisance Trips Open−Drain Power Good Output (PG) MSOP−8 Package These are Pb−Free Devices Typical Applications −48 V Distributed Power Systems Redundant Negative Voltage Supplies Central Office Switching Systems www.onsemi.com MSOP−8 Z SUFFIX CASE 846AD PIN CONNECTIONS AND MARKING DIAGRAM 1 PG EN FLTTIME IRAMP 239x AYWG G RTN GATE ISENS −VIN (Top View) 239x A Y W G = Specific Device Code x = 8 or 9 = Assembly Location = Year ...