MIC2072-2PCQS

Controllers Overview

The MIC2072-2PCQS is a dual-channel USB power controller manufactured by Micrel, designed to manage power distribution for USB wakeup from the ACPI S3 state. It operates within a supply voltage range of 4.5V to 5.5V and supports an ambient temperature range of 0°C to +70°C. The device features two independent switches with make-before-break switching to ensure glitch-free transitions between S0 and S3 states. In the active S0 state, the current-limit threshold is set at a minimum of 500mA per channel, while in the standby S3 state, it reduces to 100mA per channel to preserve auxiliary supply regulation. The part number suffix '2' indicates active-low enable inputs.

Controllers Feature Summary

• Integrated switching matrix supporting ACPI S0/S3 state transitions without external FET circuits
• Latched output off upon detecting overcurrent conditions exceeding 5ms, functioning as a circuit breaker
• Thermally isolated channels preventing fault propagation between outputs
• Fault status outputs indicating overcurrent and thermal shutdown conditions

Controllers Applications

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

Controllers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required enable logic and package type. Ensure compliance with RoHS directives if applicable to your manufacturing requirements. Review the datasheet for handling precautions regarding electrostatic discharge sensitivity during assembly processes.

Controllers Selection Notes

Select this variant when active-low control signals are required for the enable pins. The latching behavior distinguishes it from non-latching counterparts, providing automatic reset upon load removal. Consider the 16-lead QSOP package constraints for PCB layout. Evaluate thermal dissipation requirements based on the expected load currents and ambient operating temperatures to ensure junction temperatures remain within safe limits.

Controllers Part Context

This component belongs to the MIC2012/MIC2072 family of USB power controllers. The MIC2072 series specifically introduces circuit breaker functionality compared to the standard MIC2012. The '-2' suffix denotes active-low enable inputs, while '-1' would indicate active-high. Both variants share identical electrical characteristics and pinouts, differing only in the logic level required to activate the switches.

Controllers Replacement Considerations

MIC2012-2PCQS serves as a functional alternative if latching behavior is not required. MIC2072-1PCQS offers the same latching feature but utilizes active-high enable logic instead of active-low. Verify compatibility with existing control signals before substituting these parts.