RT6338BHGQUF

Overview

The RT6338BHGQUF is an 8A, 23V synchronous step-down converter with an integrated 3.3V/5V LDO. It operates from a 4.5V to 23V input supply and delivers up to 8A output current. The device features a fixed 500kHz switching frequency and supports adjustable output voltages from 0.6V to 5.5V for the buck section. It is housed in a 23-PowerUFQFN package (3x3mm) and functions within a junction temperature range of -40°C to 125°C.

Feature Summary

• Integrates a high-current synchronous buck converter with a dedicated low-dropout linear regulator
• Utilizes ACOT control architecture for fast transient response and stable operation with low-ESR capacitors
• Provides comprehensive protection including input undervoltage lockout, output overcurrent protection, and thermal shutdown

Applications

• Point-of-load regulation for industrial equipment
• Power distribution in telecommunications infrastructure
• Embedded systems requiring combined switching and linear power rails

Procurement Notes

Verify the specific suffix HGQUF against the manufacturer datasheet to confirm pinout and thermal pad configuration. Ensure the ordering code matches the exact package variant required for your PCB footprint. Cross-reference the RoHS status and MSL rating with your assembly process requirements before finalizing procurement orders.

Selection Notes

Select this component when both a high-current adjustable DC-DC rail and a fixed low-noise LDO are needed in a single package. The 23V maximum input voltage suits applications with higher bus voltages. Consider the 3x3mm UQFN package size for space-constrained designs requiring robust thermal performance and high current capability.

Part Context

This part belongs to the RT6338 series of PMICs from Richtek USA Inc., designed for compact power solutions. The series combines synchronous buck technology with LDO functionality to simplify board layout. It targets applications demanding high efficiency and minimal component count in small form factors.

Replacement Considerations

The RT6338AHGQUF is a documented alternative within the same family, offering similar specifications but potentially differing in specific output configurations or internal parameters. Verify electrical compatibility and pin-to-pin correspondence before substitution.