RT2568GQW

Overview

The RT2568GQW is a synchronous step-down DC/DC converter manufactured by Richtek. It integrates high-side and low-side power MOSFETs to deliver an output current of up to 3A. The device operates with an input voltage range from 2.7V to 6V and supports adjustable output voltages down to 0.6V. It features a fixed switching frequency of 1.5MHz, enabling the use of small external components. The IC includes comprehensive protection mechanisms such as over-current protection, thermal shutdown, and soft-start functionality.

Feature Summary

• Integrates high-efficiency synchronous rectification for improved power conversion.
• Supports wide input voltage ranges suitable for single-cell lithium battery applications.
• Includes built-in protection against over-current, over-temperature, and inrush current.

Applications

• Portable electronics powered by single-cell lithium batteries
• Consumer devices requiring efficient point-of-load regulation
• Industrial control systems with low-voltage power requirements

Procurement Notes

Verify the specific suffix (e.g., GQW) against the manufacturer's datasheet to confirm package type and temperature grade. Ensure compatibility with RoHS directives if required for your region. Check for moisture sensitivity levels before soldering to prevent damage during assembly processes.

Selection Notes

Select this component when a compact solution is needed for converting higher battery voltages to lower logic or peripheral supply rails. The 1.5MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the thermal performance of the WDFN package relative to the expected load current and ambient conditions.

Part Context

This part belongs to Richtek's family of synchronous buck converters designed for portable and battery-powered applications. It is engineered to provide stable power delivery while minimizing board space through integrated power switches and high-frequency operation.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement matches the pinout, voltage ratings, and current capabilities to maintain system integrity without redesigning the PCB layout.

FAQ

What is the typical efficiency of the RT2568GQW?

Efficiency depends on input/output voltage differentials and load current, but the synchronous design typically achieves high efficiency across the operating range.

Does the RT2568GQW include internal compensation?

Yes, the device typically features internal frequency compensation to simplify external component selection and ensure stability.