MIC2072-1PCQS-TR

Controllers Overview

The MIC2072-1PCQS-TR is a dual-channel USB power controller manufactured by Microchip Technology, originally developed by Micrel. 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 integrates two independent switches controlled by the S3# input, switching between a MAIN supply (100mΩ on-resistance, 500mA current limit) and an AUX supply (500mΩ on-resistance, 100mA current limit). It features make-before-break switching for glitch-free transitions and includes thermal shutdown protection with latching circuit breaker functionality upon overcurrent conditions exceeding 5ms.

Controllers Feature Summary

• Dual independent channels with integrated switching matrix supporting ACPI S0/S3 state transitions without external FETs
• Circuit breaker mode that latches outputs off during overcurrent events lasting more than 5ms
• Make-before-break switching ensures glitch-free transitions between standby and active states

Controllers Applications

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

Controllers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity as the unit utilizes a 16-lead QSOP housing. Ensure handling precautions are observed due to ESD sensitivity ratings. Validate RoHS compliance status prior to integration into final assemblies.

Controllers Selection Notes

Select this variant when latched fault protection is required for USB power distribution. The -1 suffix indicates active-high enable inputs suitable for standard logic control. Verify compatibility with 5V ATX-style auxiliary supplies and ensure PCB layout accommodates the specified thermal resistance characteristics for reliable operation.

Controllers Part Context

This component belongs to the MIC2012/MIC2072 family of USB power controllers designed for ACPI-compliant systems. It serves as a direct replacement for legacy power switch ICs in motherboard designs requiring robust fault management. The specific ordering suffix denotes the active-high enable configuration and lead-free packaging compliant with environmental standards.

Controllers Replacement Considerations

MIC2012-1PCQS offers similar functionality but lacks the latching circuit breaker feature found in the MIC2072 series.