General Description
The HV302 and HV312 Hotswap Controllers perform current limiting,  circuit breaker protection, over and under voltage detection power management functions during insertion of cards or modules into live backplanes and connectors. Theymaybe used in  systems where active control is implemented in the negative lead of supplies ranging from -10V to -90V or +10V to +90V.

FEATUREs
-10V to 90V or +10V to +90V Operation
Four PWRGD Flags with Programmable Delays
Integrated “normally-on” Gate Clamp eliminates components
UV/OV Lock Out & Power-On-Reset (POR) for Debouncing
Sense resistor programmed Circuit Breaker & Servo Limit
Programmable Circuit Breaker Delay
Inrush control using either: Servo or Feedback Capacitor
Feedback to RAMP pin saves gate protection components
100ms Start Up Timeout Protection for Output Overload
Programmable Inrush Current di/dt Control
Programmable Auto-Retry(tens of seconds if desired)
Auto-Retryor Latched Operation
Application solution for input voltage step (diode “ORing”)
Enable through Open Drain interface to UV or OV
LowPower, 0.6mA Active Mode, 0.4mA Sleep Mode
Small SOIC-14 Package

APPLICATIONs
-48V Telecom and Networking
-24V Cellular and Fixed Wireless Systems
-24V PBX Systems
Power Over LAN (IEEE802.3)
Distributed Power Systems
Power SupplyControl
+48V Servers and SANs
Hotswap Control of Diode ORed Multiple Power Sources
Cooling Fan Systems