RT6310CGQUF

Overview

The RT6310CGQUF is a synchronous step-down converter with an integrated LDO, manufactured by Richtek USA Inc. It operates within a 4.5V to 23V input voltage range and features a fixed 3.3V output at 10A for the buck converter. The device includes a secondary 3.3V LDO output capable of delivering 100mA. It utilizes a 500kHz switching frequency and is housed in a 23-UQFN(FC) package measuring 3x3 mm. The component supports operation across a junction temperature range of -40°C to 125°C.

Feature Summary

• Integrates a high-current synchronous buck converter with a dedicated low-dropout regulator on a single chip.
• Provides dual regulated outputs suitable for powering multiple system rails from a single input source.
• Features a compact footprint optimized for space-constrained surface-mount applications.

Applications

• Powering central processing units or field-programmable gate arrays requiring stable 3.3V supply
• Supplying power to memory modules and peripheral interfaces in embedded systems
• Providing auxiliary power rails for communication boards and industrial control equipment

Procurement Notes

Verify the specific suffix CGQUF against official datasheets to confirm the fixed 3.3V buck and 3.3V LDO configuration. Ensure compatibility with the required 23-UQFN(FC) 3x3mm package dimensions. Confirm that the 10A continuous current rating meets the peak load requirements of the target circuit design before finalizing procurement orders.

Selection Notes

Select this component when a combined solution for main logic power and auxiliary rail generation is required. The integrated topology reduces external component count compared to discrete designs. Consider the 23V maximum input capability for systems with varying supply voltages. Verify thermal performance under full 10A load conditions given the small package size.

Part Context

This part belongs to the RT6310 family of multi-output power management ICs. Variants such as the RT6310BGQUF offer adjustable buck outputs, while the RT6310AGQUF provides programmable voltage settings. The CGQUF variant specifically targets applications needing fixed voltage rails without external programming resistors for the primary converter stage.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other Richtek models like the RT6338 series only if single-output requirements suffice and higher current ratings are acceptable.