RT6258BGQUF

Overview

The RT6258BGQUF is an 8A synchronous step-down converter with a 3.3V fixed LDO, manufactured by Richtek USA Inc. It operates within a 4.5V to 23V input range and delivers up to 8A output current at a 500kHz switching frequency. The device features a UQFN-HL-12 package, supports SMD/SMT installation, and functions between -40°C and +125°C. It includes integrated protections and complies with RoHS standards.

Feature Summary

• Integrates an 8A synchronous buck converter with a dedicated 3.3V/5V LDO for auxiliary power.
• Utilizes ACOT control architecture for fast transient response and stable operation with low ESR capacitors.
• Incorporates comprehensive protection mechanisms including over-current, over-voltage, and thermal shutdown.

Applications

• Point-of-load regulation in industrial equipment
• Power distribution units for embedded systems
• Telecommunications infrastructure power supplies

Procurement Notes

Verify the exact suffix HGQUF against official datasheets to confirm pinout and thermal pad configuration. Ensure compatibility with moisture sensitivity level requirements during assembly. Cross-reference manufacturer part numbers to avoid substitution errors with similar family members.

Selection Notes

Select this component when high current density and integrated LDO functionality are required in a compact footprint. Compare switching frequencies and output voltage options against alternative models like the RT6258CGQUF or RT6278BHGQUF based on specific efficiency and transient response needs.

Part Context

This device belongs to the RT6258 series of high-efficiency synchronous buck converters. It shares the UQFN-HL-12 package form factor with other variants in the lineup, offering a standardized solution for space-constrained power management designs requiring robust performance.

Replacement Considerations

RT6258BHFN-B is listed as an alias for this part number. Verify electrical equivalence before substitution.