MAX5946 Overview
The device provides hotplug control for 12V, 3.3V, and 3.3V auxiliary supplies of two PCI express slots. The MAX5946’s logic inputs/outputs allow interfacing directly with the system hot-plug management controller or through an SMBus™ with an external I/O expander. An integrated debounced attention switch and present-detect signals are included to simplify system design.
MAX5946 Key Features
- PCI Express pliant
- Hot Swaps 12V, 3.3V, and 3.3V Auxiliary for 2 PCI-E Slots
- Integrated Power MOSFET for Auxiliary Supply Rails
- Controls dI/dt and dV/dt
- Active Current Limiting Protects Against Overcurrent/Short-Circuit Conditions
- Programmable Current-Limit Timeout
- PWRGD Signal Outputs with Programmable Power-On Reset (POR) (160ms Default)
- Latched FAULT Signal Output after Overcurrent or Overtemperature Fault
- Attention Switch Inputs/Outputs with 4ms Debounce
- Present-Detect Inputs