MAX5923EUP+ (MAXIM INTEGRATED PRODUCTS)

The MAX5923EUP+ from Maxim Integrated Products is a +60V simple swapper hot-swap switch in 20 pin TSSOP package. The MAX5923 is a fully integrated Simple Swapper™ hot-swap switch for positive supply rails. The device allows the safe insertion and removal of circuit cards into live backplanes or ports without causing glitches on the power-supply rail. The device also monitors various circuit parameters and disconnects the load if a fault condition occurs, alerting the host with a logic level FAULT(active-low) output. During start-up, an integrated 0.45ohm power MOSFET regulates current and voltage between the backplane power source and the load. After start-up, the MOSFET is fully enhanced to reduce its on-resistance. To ensure robust operation, the MAX5923 contains built-in safety features that monitor fault conditions and prevent damage to the internal MOSFET. The MAX5923 monitors 3 parameters for fault conditions such as zero current, overcurrent and thermal overload.