RT8207LZQW

Overview

The RT8207LZQW is a complete power supply controller for DDR memory systems, integrating a synchronous PWM buck controller and a 1.5A sink/source tracking linear regulator with a buffered low-noise reference. It supports DDRII, DDRIII, Low-Power DDRIII, and DDRIV standards. The device features a 4.5V to 26V input range, adjustable output voltage from 0.75V to 3.3V, and 1% VDDQ accuracy. It operates within a temperature range of -40°C to +85°C in a WQFN-20 package.

Feature Summary

• Integrates a synchronous PWM buck controller with a 1.5A sink/source tracking linear regulator and buffered low-noise reference
• Provides quick load step response within 100ns and 1% VDDQ accuracy over line and load conditions
• Supports high-Z state in S3 sleep mode and soft-off functionality in S4/S5 states

Applications

• DDR memory power supplies
• Notebook computers
• SSTL18, SSTL15, and HSTL bus termination

Procurement Notes

Verify the specific suffix 'L' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the WQFN-20 package matches your PCB footprint design. Confirm RoHS compliance status if required by your manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when designing power architectures for DDR memory modules requiring integrated VDDQ and VTT regulation. It is suitable for applications needing fast transient response and precise voltage tracking. Consider the 4.5V to 26V input range for battery-powered or multi-rail systems.

Part Context

This part belongs to Richtek's family of memory power supply controllers designed for portable computing. It addresses the need for compact, high-efficiency solutions for DDR memory interfaces. The integration of buck and LDO stages reduces component count compared to discrete designs.

FAQ

Does the RT8207LZQW support DDRIV memory standards?

Yes, the device provides a complete power supply solution for DDRIV memory systems, supporting an adjustable output range suitable for 1.2V operation.

What is the maximum current capability of the integrated LDO?

The integrated linear regulator (VTT) is capable of sourcing and sinking up to 1.5A.