RT7290AGQUF

Overview

The RT7290AGQUF is a synchronous Buck converter featuring Advanced Constant On-Time (ACOT) mode control, manufactured by Richtek USA Inc. It integrates a high-efficiency step-down converter and a dedicated LDO for system power. The device supports an input voltage range up to 23V and delivers a continuous output current of 6A. Operating at a fixed switching frequency of 500kHz, it provides two outputs: one adjustable buck channel and one fixed 3.3V LDO. The component is housed in a compact 16-PowerUFQFN package designed for surface mount applications.

Feature Summary

• Integrates Advanced Constant On-Time (ACOT) mode control for stable operation with low-ESR ceramic capacitors
• Combines a high-current synchronous buck converter with a dedicated low-dropout regulator for system bias
• Supports wide input voltage ranges suitable for various industrial and consumer power architectures

Applications

• Industrial equipment requiring dual-rail power distribution
• Consumer electronics utilizing ACOT-controlled power stages
• System-on-chip power supplies needing integrated LDO regulation

Procurement Notes

Verify the complete part number including suffixes such as 'G' and 'QUF' against official Richtek documentation to ensure correct pinout and thermal characteristics. Confirm that the specific revision matches the required ACOT control specifications and output configurations before procurement.

Selection Notes

Select this component when a design requires both a high-current adjustable output and a separate regulated rail from a single IC footprint. The ACOT topology simplifies compensation and allows for smaller external passive components compared to traditional voltage mode controllers.

Part Context

This device belongs to the RT7290A family of mixed-signal power management ICs. It combines switching regulation with linear regulation to reduce board space and component count. The integration targets applications where efficiency and layout simplicity are critical constraints.

Replacement Considerations

Consult official substitution guides for compatible parts within the RT7290 series or equivalent ACOT synchronous buck converters with integrated LDOs from other manufacturers.