RT6575AGQW

Overview

The RT6575AGQW 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 alongside fixed LDO outputs. The device supports switching frequencies of 300kHz and 355kHz, ensuring efficient power conversion for compact designs. Packaged in a 20-WQFN (3x3) format, it is designed for surface-mount installation and functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates dual synchronous buck controllers with dedicated 5V and 3.3V low-dropout regulators for comprehensive power management.
• Supports flexible switching frequency selection between 300kHz and 355kHz to optimize external component size and efficiency.
• Features built-in sequencing control to manage startup and shutdown timing of multiple output rails safely.

Applications

• Portable electronic devices requiring multi-rail power distribution
• Industrial control systems needing stable 5V and 3.3V logic supplies
• Embedded computing platforms utilizing synchronous step-down regulation

Procurement Notes

Verify the specific suffix 'AGQW' against the manufacturer's latest datasheet to confirm pinout compatibility and thermal pad configuration. Ensure that the required switching frequency matches the selected variant, as internal oscillator settings may differ between sub-models. Confirm RoHS compliance status and moisture sensitivity level requirements before finalizing procurement orders.

Selection Notes

Select this component when a single IC solution is needed for both high-current buck regulation and clean analog/digital LDO supplies. The choice depends on the requirement for integrated sequencing and the constraint of using a small 3x3mm package. Evaluate the input voltage stability to ensure it remains within the 5V to 25V operational window for reliable performance.

Part Context

This part belongs to the RT6575 family of PMICs from Richtek, which are designed for applications requiring multiple regulated outputs from a single controller. The AGQW designation specifies the particular electrical characteristics and packaging type within this series, distinguishing it from other variants like the BGQW or DGQW which may have different output configurations or fixed voltage options.

Replacement Considerations

RT6575DGQW(2) is listed as a substitute option by distributors. Verify functional equivalence regarding output topology and sequencing capabilities before substitution.

FAQ

What is the maximum input voltage for the RT6575AGQW?

The maximum supported input voltage is 25V.

Does the RT6575AGQW include hardware sequencing?

Yes, the device includes built-in sequencing control for managing the startup and shutdown of its outputs.