Positive High-Voltage, Hot-Swap Controller

The MAX5932 is a fully integrated hot-swap controller for +9V to +80V positive supply rails. The MAX5932 allows for the safe insertion and removal of circuit cards into a live backplane without causing glitches on the backplane power-supply rail. This device is pin and function compatible to LT1641-1. The MAX5932 features a programmable foldback-current limit. If the device remains in current limit for more than a programmable time, the external n-channel MOSFET latches off. Other features include a programmable undervoltage lockout and a programmable output-voltage slew rate through an external n-channel MOSFET.

The MAX5932 provides a power-good output (PWRGD) to indicate the status of the output voltage. For a variety of PWRGD/PWRGD-bar, latch/autoretry-fault management, autoretry duty-cycle options, refer to the MAX5933 and MAX5934 data sheets.

The MAX5932 operates in the -40°C to +85°C extended temperature range. This device is available in an 8-pin SO package.

Applications

* 24V/48V Industrial/Alarm Systems * Electronic Circuit Breakers * Hot Board Insertion * Industrial High-Side Switch/Circuit Breakers * Network Routers and Switches

* Pin and Function Compatible with LT1641-1

* Provides Safe Hot Swap for +9V to +80V Power Supplies

* Safe Board Insertion and Removal from Live Backplanes

* Active-High Power-Good Output (PWRGD)

* Programmable Foldback-Current Limiting

* High-Side Drive for an External n-Channel MOSFET

* Undervoltage Lockout (UVLO)

* Overvoltage Protection

* Latched Fault Management

* User-Programmable Supply Voltage Power-Up Rate