RT8248AGQW

Overview

The RT8248AGQW is a complete DDR memory power supply controller by Richtek USA Inc., designed for DDR2, DDR3, DDR3L, LPDDR3, DDR4, and LPDDR4 systems. It integrates a synchronous PWM Buck controller with a 1.5A output current capability and supports multiple voltage outputs up to 3.3V. The device operates within an input voltage range of 4.5V to 26V and features an operating temperature range of -40°C to +85°C. Housed in a 20-WQFN (3x3) package with an exposed pad, it offers quick load-step response within 100ns and low quiescent supply current.

Feature Summary

• Integrates synchronous PWM Buck controller for complete DDR memory power supply solutions
• Features adjustable current limit with low-side RDS(ON) sensing for enhanced protection
• Delivers quick load-step response within 100ns for stable dynamic performance
• Maintains low quiescent supply current to improve system efficiency

Applications

• DDR2 memory system power supplies
• DDR3 and DDR3L memory power supplies
• LPDDR3 memory power supplies
• DDR4 memory power supplies
• LPDDR4 memory power supplies

Procurement Notes

Verify the component marking '5E' on the top surface to confirm authenticity against the official datasheet specifications. Ensure the package matches the 20-WFQFN Exposed Pad configuration. Confirm the manufacturer is Richtek Technology Corporation or Richtek USA Inc. Check for active status and lead time requirements prior to ordering.

Selection Notes

Select this component when designing power stages for various DDR memory generations requiring integrated control. Consider the 1.5A output current limit and 4.5V-26V input range compatibility with your system rails. Evaluate the thermal performance needs given the WQFN package and exposed pad design for heat dissipation.

Part Context

This part belongs to Richtek's Special Purpose Regulators family, specifically tailored for memory applications. It serves as a dedicated solution for powering complex memory subsystems, replacing discrete controller and driver combinations. The RT8248A series provides a compact alternative to multi-component designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility and electrical specifications before considering any alternative components from other manufacturers.