RT6338BGQUF

Overview

The RT6338BGQUF is an 8A synchronous step-down converter with integrated 3.3V and 5V LDOs, manufactured by Richtek USA Inc. It operates within a 4.5V to 23V input voltage range and delivers up to 8A output current at a fixed 3.3V output. The device features a 500kHz switching frequency and a typical quiescent current of 95uA. Designed for surface mount installation in a UQFN-23 package, it supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Implements ACOT modified constant on-time control architecture for fast transient response and stable operation across varying input and load conditions.
• Integrates dual low-dropout regulators providing fixed 3.3V and 5V outputs alongside the primary buck converter channel.
• Supports selectable light-load efficiency modes including ultrasonic mode above 25kHz and diode emulation for optimized power management.

Applications

• Portable computers
• Tablets
• Network equipment
• Servers
• Video recorders

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to storage and assembly. Ensure proper handling procedures are followed to prevent electrostatic discharge damage during PCB placement.

Selection Notes

Select this component when high current delivery up to 8A is required within a compact footprint. The integrated LDOs simplify design by eliminating external linear regulator components. Consider the wide input voltage range suitable for battery-powered systems requiring efficient DC-DC conversion.

Part Context

This part belongs to the RT6338 series of synchronous buck converters designed for portable electronics and enterprise applications. It shares architectural similarities with other models in the family but is distinguished by its specific output configuration and current rating capabilities.

Replacement Considerations

Consult official cross-reference documentation for compatible substitutes. Verify pin compatibility and thermal performance before substituting with alternative part numbers from the same manufacturer series.