RT6575CGQW(2)

Overview

The RT6575CGQW(2) is a dual-channel synchronous DC-DC step-down controller integrated with two low-dropout regulators. It features a 5V fixed LDO and a 3.3V fixed LDO, providing auxiliary power rails for system logic or peripherals. The switching controllers operate at adjustable frequencies of 300kHz and 355kHz, allowing optimization for efficiency and component size. Designed for input voltages between 5V and 25V, the device supports flexible output voltage configurations via external resistors. It is housed in a compact 20-WQFN package measuring 3x3 mm, suitable for space-constrained portable electronics.

Feature Summary

• Integrates two independent synchronous buck controllers with dedicated 5V and 3.3V LDO outputs
• Supports adjustable switching frequencies to balance transient response and efficiency requirements
• Provides comprehensive protection mechanisms including over-current, over-voltage, and thermal shutdown
• Utilizes a compact WQFN-20L package to minimize printed circuit board area

Applications

• Portable computing devices such as tablets and ultrabooks
• Consumer electronics requiring multiple regulated voltage rails
• Industrial control systems with mixed-signal power requirements
• Communication equipment needing stable auxiliary power supplies

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest datasheet to ensure correct pinout and electrical characteristics. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Cross-reference ordering information with authorized distributors to avoid counterfeit components. Ensure proper handling procedures are followed due to the fine-pitch QFN package type.

Selection Notes

Select this component when a design requires two isolated buck channels alongside fixed auxiliary LDOs. Evaluate the input voltage range against the system's primary power source. Consider the thermal performance of the 3x3mm package under maximum load conditions. Compare switching frequency options against inductor selection constraints and electromagnetic interference limits.

Part Context

This part belongs to the RT6575 family of power management integrated circuits from Richtek Technology Corporation. The series is designed for applications requiring high integration and efficient power conversion. Variants within the family may differ in LDO specifications or switching frequencies. The CGQW(2) designation indicates a specific configuration within the dual-channel controller lineup.

Replacement Considerations

RT6575BGQW is listed as a similar alternative within the same product family. Verify pin compatibility and electrical parameter alignment before substitution. Ensure that any replacement maintains the required LDO outputs and switching capabilities.