MIC2070-2PZQS TR

Controllers Overview

The MIC2070-2PZQS TR is a dual-channel USB power controller designed for ACPI S3 state wakeup support. It integrates two independent switches to manage transitions between a 5V main supply and a 5V auxiliary supply. In the active S0 state, each channel provides a minimum 500mA current limit through a 140mΩ on-resistance switch. During the standby S3 state, the device switches to a higher resistance path with an adjustable current limit determined by external RSET resistors. The MIC2070 variant includes a circuit breaker function that latches the output off upon detecting an overcurrent condition lasting more than 5ms. This latch can be reset by toggling the enable inputs or removing the load.

Controllers Feature Summary

• Integrated switching matrix supports ACPI S0/S3 state transitions without external FET circuits
• Circuit breaker mode of operation reduces power consumption during fault conditions
• 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 motherboard

Controllers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type, enable logic polarity, and temperature range. Ensure the procurement source provides valid traceability for the component. Confirm that the 'TR' designation aligns with the required reel packaging specifications for automated assembly processes.

Controllers Selection Notes

Select this component when designing systems requiring compliant USB power distribution with ACPI S3 wakeup capabilities. Choose the MIC2070 variant specifically if a latching circuit breaker mode is necessary to protect downstream loads from sustained overcurrent events. Verify that the operating ambient temperature range meets the system requirements.

Controllers Part Context

This part belongs to the MIC2010/MIC2070 family of USB power controllers manufactured by Micrel, which was later acquired by Microchip Technology. The series is engineered to handle the power distribution requirements for USB ports in computing platforms, managing the complex power state transitions between active and standby modes efficiently.

Controllers Replacement Considerations

The MIC2010-2PZQS serves as a functional alternative within the same family but lacks the latching circuit breaker feature found in the MIC2070. When substituting, verify that the non-latching behavior of the MIC2010 does not compromise the protection requirements of the target application design.