RT9045ZSP

Overview

The RT9045ZSP is a DDR bus termination regulator manufactured by Richtek USA Inc. It provides a sink/source current of 1.8 A with an input voltage range of 1 V to 5.5 V. The device operates within a temperature range of -40°C to +85°C and features a maximum output voltage of 20 mV. Quiescent input current is specified at 20 uA. It is housed in an SOP-8 package.

Feature Summary

• Provides bidirectional sink and source current capability for DDR bus termination applications
• Integrates thermal shutdown and overcurrent protection mechanisms
• Includes an enable pin for power management control

Applications

• DDR memory bus termination
• Server platform power management
• Consumer electronics memory interfaces

Procurement Notes

Verify the specific suffix ZSP against official datasheets to confirm package type and environmental compliance status. Confirm moisture sensitivity level requirements for surface mount assembly processes. Ensure compatibility with system input voltage ranges before integration.

Selection Notes

Select this component when a cost-effective solution for DDR bus termination is required. Consider the 1.8 A current capacity and wide input voltage range for flexible design options. Evaluate the SOP-8 package constraints against available board space and thermal dissipation needs.

Part Context

This part belongs to the Richtek PMIC portfolio, specifically designed as a specialized power management integrated circuit. It addresses the need for precise voltage regulation on data buses in computing and communication systems.

Replacement Considerations

RT9045GSP is listed as an alternative variant within the same product family.