RT8862GQW

Overview

The RT8862GQW is a four-phase PWM controller manufactured by Richtek USA Inc., housed in a 48-pin WQFN package. It functions as a DC-DC switching controller designed for power management applications. The device supports an input voltage range of 4.75V to 13.2V and operates with a fixed switching frequency of 300kHz. Key internal features include synchronous rectification control, integrated enable logic, a good power signal indicator, and soft-start functionality to ensure stable startup sequences.

Feature Summary

• Four-phase PWM control architecture for high-current distribution
• Synchronous rectification technology implementation
• Integrated soft-start and enable control mechanisms
• Good power signal output for system monitoring

Applications

• Server and workstation power delivery systems
• Graphics processing unit (GPU) voltage regulation modules
• Central processing unit (CPU) core power supplies
• High-performance embedded computing platforms

Procurement Notes

Verify the current lifecycle status of the RT8862GQW before procurement, as sources indicate it may be obsolete. Confirm that the 48-WQFN package dimensions match your PCB footprint requirements. Ensure compatibility with the required 300kHz switching frequency and 4.75V–13.2V input range for your specific design. Request updated datasheets from Richtek USA Inc. to confirm pinout and electrical characteristics.

Selection Notes

Select this component when designing multi-phase power stages requiring precise current sharing and thermal management. The four-phase topology reduces input and output ripple currents compared to single-phase solutions. Consider the 300kHz switching frequency for balancing efficiency and passive component size. Verify that the 48-pin WQFN package allows adequate thermal dissipation for your expected load conditions.

Part Context

The RT8862GQW belongs to the RT8862 series of power management ICs from Richtek USA Inc. This series targets high-performance digital loads where multiple phases are necessary to deliver substantial current efficiently. The controller manages the timing and duty cycle for external MOSFETs to regulate output voltage accurately under varying load conditions.

Replacement Considerations

Check for official replacement part numbers from Richtek USA Inc. if the RT8862GQW is confirmed obsolete. Evaluate alternative four-phase controllers with compatible input voltage ranges and switching frequencies. Ensure any substitute maintains the same package outline or requires PCB redesign.