MIC2341/2341R Dual-Slot PCI Express Hot-Plug Controller General Description Features The MIC2341 is a dual-slot power controller supporting the Supports two independent PCI Express slots power distribution requirements for Peripheral Component 12V, 3.3V, and 3.3VAUX supplies supported per Interconnect Express (PCI Express) Hot-Plug compliant PCI Express Specification v1.0a, v.2.0 systems. The MIC2341 provides complete power control Integrated Power MOSFETS for 3.3VAUX rails support for two PCI Express slots, including the 3.3VAUX Standby Operation for Wake-on-LAN defined by the PCI Express standards. Support for the applications with low backfeed on Main +12V 12V, 3.3V, and 3.3VAUX supplies includes programmable and +3.3V rails gate voltage slew-rate control, voltage supervision, programmable current limit, and circuit breaker functions. Electronic circuit breakers for each supply per slot These features provide comprehensive system protection - Programmable gate voltage slew-rate control and fault isolation. - Active current regulation controls inrush Data sheets and support documentation can be found on current Micrels web site at: www.micrel.com. 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 for each slot Global Systems Power-is-Good Output Both slots thermally isolated Internally Debounced Plug-in Card Retention Switch Inputs per slot. Applications PCI Express v1.0a, v2.0 hot-plug power control PCI Express is a registered trademark of the PCI SIG Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC2341/2341R Ordering Information Part Number 12V and 3V 3.3VAUX Nominal Package Fast-Trip Current Limit Latch Off Auto-Retry Thresholds MIC23412YTQ MIC2341R2YTQ 100mV 0.375A 48 Pin TQFP (1) (1) MIC23413YTQ MIC2341R3YTQ 150mV 0.375A 48 Pin TQFP (1) (1) MIC23415YTQ MIC2341R5YTQ Disabled 0.375A 48 Pin TQFP Note: 1. Contact factory for availability M9999-102507-A October 2007 2 (408) 944-0800