RT7300GS

Overview

The RT7300GS is a Critical Conduction Mode (CRM) Power Factor Correction controller manufactured by Richtek USA Inc. It operates with a switching frequency of 120kHz and supports an input voltage range of 12V to 25V. The device features a current startup threshold of 20 µA and is designed for operation within a temperature range of -40°C to 125°C. Packaged in an 8-SOIC format with a width of 3.90mm, it integrates essential control logic for efficient PFC applications without requiring external complex compensation networks.

Feature Summary

• Critical Conduction Mode Operation
• Integrated Power Factor Correction Control
• Wide Operating Temperature Range

Applications

• Power factor correction circuits
• AC-DC power supply designs
• Consumer electronics power adapters

Procurement Notes

Verify the specific suffix GS against the manufacturer's official datasheet to confirm pinout compatibility and thermal specifications. Ensure that the 8-SOIC package dimensions match the target PCB footprint requirements. Cross-reference the date code and marking information provided on the component surface with the production batch records to guarantee authenticity and traceability before integration into final assemblies.

Selection Notes

Select this component when designing systems requiring CRM-based PFC solutions with moderate switching frequencies. The 120kHz operation balances electromagnetic interference considerations with efficiency targets. Evaluate the 12V to 25V supply range against the system's auxiliary power availability. Consider the -40°C to 125°C operating window for environmental robustness in industrial or automotive adjacent applications where standard commercial grades may be insufficient.

Part Context

This part belongs to Richtek's portfolio of power management integrated circuits, specifically targeting AC-DC conversion stages. As a CRM PFC controller, it complements other Richtek components like the RT7304 LED driver by providing upstream power quality improvement. The family focuses on cost-effective, high-efficiency solutions for global energy standards compliance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternatives from other manufacturers, as CRM control algorithms and protection thresholds may differ significantly.