DPA02257RGBR

Special Purpose Regulators Overview

The DPA02257RGBR is a synchronous step-down DC/DC converter manufactured by Texas Instruments, belonging to the TPS53317 series. It operates within an input voltage range of 1 V to 6 V and provides a single adjustable output from 600 mV to 5.5 V with a maximum output current of 6 A. The device utilizes a fixed switching frequency of 1 MHz and features integrated TG-FETs. It is housed in a 20-pin VQFN package with an exposed pad, designed for surface-mount installation.

Special Purpose Regulators Feature Summary

• Integrates high-side and low-side power FETs for compact solution size
• Supports external synchronization to an external clock signal
• Features internal soft-start circuitry for controlled ramp-up

Special Purpose Regulators Applications

• DDR memory power supply regulation
• Point-of-load conversion for embedded processors
• General-purpose step-down conversion in portable electronics

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'RGBR' against the manufacturer datasheet to confirm the reel packaging quantity and tape specifications. Ensure the component matches the required thermal performance characteristics for the intended PCB layout. Cross-reference the part number with official Texas Instruments documentation to validate authenticity and revision level before integration into production designs.

Special Purpose Regulators Selection Notes

Select this component when a high-current, single-output buck converter is required within a 6 V input limit. The 1 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal requirements of the VQFN-20 package and ensure adequate copper area for heat dissipation to maintain reliability under full load conditions.

Special Purpose Regulators Part Context

This part is functionally equivalent to the TPS53317RGBR, serving as a specific manufacturer designation within the same product family. It shares identical electrical characteristics and pinout configurations with the TPS53317 series, facilitating direct replacement in designs originally specifying the base model number while maintaining compatibility with existing evaluation modules like the TPS53317EVM-750.

Special Purpose Regulators Replacement Considerations

The TPS53317RGBR is a confirmed substitute part number for the DPA02257RGBR.