RT6575BGQW

Overview

The RT6575BGQW is a dual-channel synchronous DC-DC step-down controller with integrated 5V and 3.3V LDOs, manufactured by Richtek USA Inc. It operates within an input voltage range of 5V to 25V and features two adjustable buck outputs supporting voltages from 2V to 5.5V and 2V to 4V respectively. The device utilizes switching frequencies of 300kHz and 355kHz for the buck channels. It is housed in a compact 20-WQFN (3x3) package with exposed pad, designed for surface mount installation.

Feature Summary

• Integrates two synchronous buck controllers and two fixed-output low-dropout regulators in a single package
• Includes built-in sequencing control for coordinated power-up and power-down management
• Supports wide input voltage ranges suitable for various system power rails

Applications

• Portable electronic devices requiring multiple regulated voltage rails
• Embedded systems needing synchronized power sequencing
• Industrial control modules with mixed analog and digital power requirements

Procurement Notes

Verify the specific suffix GQW corresponds to the required 20-WQFN 3x3 package configuration. Confirm that the fixed LDO outputs meet your system's voltage needs as they are not adjustable. Ensure compatibility with the specified switching frequencies during PCB layout planning.

Selection Notes

Select this component when a compact solution combining two adjustable buck converters with fixed auxiliary LDOs is required. It is suitable for designs prioritizing board space efficiency and integrated power sequencing capabilities over fully programmable output configurations.

Part Context

This part belongs to the RT6575 family of power management ICs from Richtek. The BGQW variant specifically denotes the WQFN-20 package type. It serves as a specialized PMIC for applications needing both high-efficiency switching regulation and stable linear regulation in a minimal footprint.

Replacement Considerations

RT6575DGQW(2) is listed as a substitute part number for this component.