RT6256BGQUF

Overview

The RT6256BGQUF is a synchronous step-down converter with an integrated LDO, manufactured by Richtek USA Inc. It operates within an input voltage range of 4.5 V to 23 V and delivers up to 6 A output current. The device features a fixed 3.3 V output for the main buck converter and a separate 5 V or 3.3 V LDO option. It utilizes a UQFN-HL-12 package and supports a switching frequency of 500 kHz. The component functions reliably across a temperature range of -40°C to +125°C TJ.

Feature Summary

• Integrates a high-efficiency synchronous buck converter with an auxiliary low-dropout linear regulator on a single chip.
• Employs advanced constant on-time control architecture to ensure rapid transient response under varying load conditions.
• Designed for compatibility with all MLCC output capacitors, simplifying board layout and reducing component count.

Applications

• Point-of-load regulation in industrial equipment
• Power supply stages for embedded computing systems
• Voltage regulation for communication infrastructure modules

Procurement Notes

Verify the specific suffix code against the manufacturer datasheet to confirm pinout and thermal pad configuration. Ensure the ordering quantity aligns with standard reel sizes. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly planning.

Selection Notes

Select this component when a combined solution for high-current DC-DC conversion and clean analog power is required. The integrated design reduces footprint compared to discrete solutions. Evaluate thermal performance based on the UQFN-HL-12 package capabilities and expected ambient operating temperatures.

Part Context

This part belongs to the RT6256 family of PMICs from Richtek Technology. It is designed for applications requiring compact power management solutions. The family typically includes variants with different output voltages or current ratings, sharing similar control architectures and package dimensions for design flexibility.

Replacement Considerations

Check for direct cross-reference parts such as RT6256BFN-A if available. Verify that any substitute matches the 23V input limit, 6A current capacity, and UQFN-HL-12 package outline to ensure mechanical and electrical compatibility.