MIC2341R

MIC2341/2341R Dual-Slot PCI Express Hot-Plug Controller General Description The MIC2341 is a dual-slot power controller supporting the power distribution requirements for Peripheral Component Interconnect Express (PCI Express) Hot-Plug compliant systems. The MIC2341 provides complete power control support for two PCI Express slots, including the 3.3VAUX defined by the PCI Express standards. Support for the 12V, 3.3V, and 3.3VAUX supplies includes programmable gate voltage slew-rate control, voltage supervision, programmable current limit, and circuit breaker functions. These features provide comprehensive system protection and fault isolation. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features Supports two independent PCI Express slots 12V, 3.3V, and 3.3VAUX supplies supported per PCI Express Specification v1.0a, v.2.0 Integrated Power MOSFETS for 3.3VAUX rails Standby Operation for Wake-on-LAN applications with low backfeed on Main +12V and +3.3V rails Electronic circuit breakers for each supply per slot - Programmable gate voltage slew-rate control - Active current regulation controls inrush current High accuracy Primary and Secondary Circuit Breaker Current-limit Thresholds Dual-level, dual-speed fault detection for fast response without nuisance tripping User-programmable Primary Overcurrent Detector /PWRGD and Delayed /PWRGD (164 ms) signal outputs per slot Separate /FAULT output signals for MAIN and AUX rails f...