RT8802AGQV

Overview

The RT8802AGQV is a synchronous buck controller designed for high-density power supplies, specifically supporting 2/3-phase configurations. It operates with a 5V power supply and features an 8-bit VID interface compatible with Intel VRD11/VRD10.x and AMD K8 processors. The device utilizes time-sharing DCR current sensing for phase balance and overcurrent protection. It offers adjustable frequency, typically 300kHz per phase, and includes programmable soft-start and overvoltage protection. Packaged in a compact 40-lead VQFN (6x6mm) with an exposed pad, it supports surface mount installation.

Feature Summary

• Supports 2/3-phase power conversion with automatic phase selection
• Integrates an 8-bit VID interface for direct microprocessor voltage identification
• Employs innovative time-sharing DCR current sensing for thermal balance and load line setting
• Provides precision core voltage regulation with overvoltage and overcurrent protection

Applications

• Intel next-generation microprocessor power delivery
• AMD K8 and K8_M2 CPU power stages
• Desktop PC motherboard DC/DC converters
• Low output voltage, high power density applications

Procurement Notes

Verify the specific suffix 'GQV' against the manufacturer's official datasheet to confirm package type and lead-free compliance. Ensure compatibility with target processor VID codes before integration. Request RoHS certification documents to verify environmental compliance standards. Confirm that the 40-lead VQFN footprint matches the PCB design requirements. Validate input voltage range specifications against system power rails.

Selection Notes

Select this component for designs requiring precise multi-phase control for Intel or AMD CPUs. The integrated VID decoder simplifies voltage regulation compared to external DAC solutions. Consider the DCR sensing capability if minimizing external components is critical. The 40-lead VQFN package suits space-constrained motherboards. Evaluate thermal performance based on the exposed pad design for efficient heat dissipation during high-load operations.

Part Context

The RT8802A series comprises PWM controllers for high-density power supplies. Variants like RT8802APQV support 2/3 phases, while the base RT8802A supports up to 5 phases. The AGQV variant specifically denotes the 2/3-phase configuration within the 40-lead VQFN package family. These devices are part of Richtek's portfolio for desktop and server processor power management.

Replacement Considerations

RT8802APQV serves as a functional substitute within the same package family. RT8802A offers expanded phase support but requires pinout verification. Cross-reference VID table compatibility with target processors when substituting. Ensure thermal characteristics of the VQFN package remain consistent across variants.