MIC2591B-2BTQ

Hot Swap Controllers Overview

The MIC2591B-2BTQ is a dual-slot PCI Express hot-plug controller manufactured by Microchip Technology. It supports two independent PCI Express slots and includes an SMBus interface for slot power control and status ADC. The device features two general-purpose input pins suitable for application interfacing and complies with PCI Express v1.0a hot-plug power control standards. It operates within a supply voltage range of 11 V to 13 V, with a typical operating current of 2.5 mA. The component is available in a 48-pin TQFP package and is rated for commercial temperature ranges.

Hot Swap Controllers Feature Summary

• Supports two independent PCI Express slots for dual-slot configurations
• Integrates an SMBus interface for precise slot power control and status monitoring
• Includes two general-purpose input pins for flexible application interfacing
• Complies with PCI Express v1.0a hot-plug power control specifications

Hot Swap Controllers Applications

• Dual-slot PCI Express motherboard designs
• PCI Express expansion chassis controllers
• Hot-plug capable server backplanes
• Industrial PC systems requiring PCIe slot management

Hot Swap Controllers Procurement Notes

Verify the specific suffix '2BTQ' against official Microchip documentation to confirm fast-trip threshold settings and auxiliary current limits. Ensure compatibility with the target PCB footprint for the 48-pin TQFP package. Confirm that the design environment meets the specified operating temperature range and supply voltage requirements before finalizing procurement.

Hot Swap Controllers Selection Notes

Select this component when designing systems requiring dedicated hardware management for two PCI Express slots. The integrated SMBus interface simplifies system integration compared to discrete solutions. Consider the 48-pin TQFP package size for board space constraints. Verify that the required hot-plug timing and power sequencing align with the device's internal control logic and external component capabilities.

Hot Swap Controllers Part Context

The MIC2591B series belongs to Microchip's portfolio of hot-plug controllers designed for PCI Express applications. This family provides robust power management and fault detection for high-speed serial interfaces. The device addresses the need for reliable slot initialization and protection in complex multi-slot systems, ensuring compliance with industry standards for hot-swappable peripherals.

Hot Swap Controllers Replacement Considerations

Check Microchip datasheets for direct pin-compatible or functionally equivalent successors within the MIC2591 family. Verify if newer revisions offer updated thermal performance or additional features while maintaining electrical compatibility with existing designs.