MIC2012BM-TR

Controllers Overview

The MIC2012BM-TR is a dual-channel USB power switch designed for ACPI S3 state support. It switches between a 5V main supply and a 5V auxiliary supply based on the S3# input level. In the active S0 state, it provides a minimum current limit of 500mA per channel with an on-resistance of 140mΩ maximum. In the standby S3 state, the current limit reduces to 100mA minimum with an on-resistance of 700mΩ maximum. The device operates within a voltage range of 4.5V to 5.5V and supports an ambient temperature range of 0°C to +70°C. It features make-before-break switching and thermally isolated channels.

Controllers Feature Summary

• Integrated switching matrix supports ACPI S0/S3 state transitions without external FET circuits
• Bi-level current-limit preserves auxiliary supply voltage regulation in standby mode
• Thermally isolated channels prevent faults in one channel from affecting the other
• Make-before-break switching ensures glitch-free transitions between states

Controllers Applications

• Desktop PCs
• Notebook PCs
• Notebook Docking stations
• LAN Servers
• PC Motherboards

Controllers Procurement Notes

Verify that the ordering suffix 'TR' corresponds to tape-and-reel packaging as indicated by standard industry conventions for this manufacturer, though the provided datasheet does not explicitly define the 'TR' suffix. Confirm the component is sourced from authorized distributors to ensure authenticity. Check for RoHS compliance status if required by specific manufacturing standards.

Controllers Selection Notes

Select this component when designing systems requiring ACPI S3 wakeup support for USB ports. Ensure the design accommodates the 0°C to +70°C operating temperature range. Verify that the 8-lead SOIC package fits the PCB layout constraints. Consider the open-drain fault output configuration for integration with system monitoring logic.

Controllers Part Context

This part belongs to the MIC2012/MIC2072 family of USB power controllers manufactured by Micrel (now Microchip Technology). The MIC2012 variant differs from the MIC2072 by lacking the latching circuit breaker feature; the MIC2012 automatically resets upon thermal cooldown. The BM suffix indicates a specific enable/fault pinout configuration within the 8-lead SOIC package family.

Controllers Replacement Considerations

The MIC2012YM is a direct equivalent offering the same functionality in the 8-lead SOIC package. For designs requiring latching circuit breaker protection, the MIC2072 series serves as a functional alternative. Other dual-channel USB switches may require significant schematic redesign due to differences in control logic and pinouts.