Hot swap controller with integrated FET — 5.5 A continuous
The TPS2590RSAT is a single-channel hot swap controller from Texas Instruments, integrating the power FET on-chip. It handles a 3 V to 20 V supply rail and delivers up to 5.5 A continuous output current.
What the programmable fault features mean for your design
The controller gives you five programmable fault responses — auto retry, circuit breaker, current limit, fault timeout, and latched fault — all set with external resistors or capacitor timing. That means you can tailor the inrush profile and the overcurrent reaction to the load capacitance without adding a glue-logic sequencer. For a card that must restart after a transient overload, set auto retry; for a mission-critical slot that needs a hard lockout, choose latched fault. The package is a 16-VQFN with exposed pad (4x4 mm), surface-mount.
For a production BOM, this part is a low-risk selection — no imminent obsolescence to drive a redesign or a lifetime-buy calculation.