RT9218CPS

Overview

The RT9218CPS is a dual-output power management IC featuring one synchronous buck PWM controller and one linear regulator controller. Designed for generating logic-supply voltages in PC-based systems, it integrates a step-down topology with a switching frequency of 300kHz alongside a linear LDO stage. The device operates within a specified input voltage range to provide stable regulated outputs for system logic requirements.

Feature Summary

• Integrates a synchronous buck PWM controller for high-efficiency step-down conversion
• Includes a dedicated linear regulator controller for low-noise supply generation
• Dual-output architecture optimized for combined logic supply applications

Applications

• PC-based system logic supply generation
• Motherboard power distribution networks
• Embedded computing platforms requiring mixed regulation topologies

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels due to obsolete status. Confirm package integrity and pin alignment against the 14-SOP specification. Review RoHS compliance documentation and check for recent engineering change notices that may affect pinout or electrical characteristics before integration into new designs.

Selection Notes

Select this component when a single IC solution is required for both high-current buck conversion and precise linear regulation in PC logic circuits. Evaluate thermal performance under maximum load conditions as the device combines two distinct regulation stages. Ensure input voltage levels match the synchronous buck input range and verify output current demands do not exceed the linear regulator's capabilities.

Part Context

The RT9218 series belongs to Richtek's portfolio of multi-output PMICs designed for complex digital systems. It addresses the need for consolidated power management by combining switching and linear technologies. This approach reduces component count and board space compared to discrete solutions, targeting applications where efficiency and noise sensitivity coexist.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the product status is listed as obsolete, alternative sourcing requires direct consultation with the manufacturer or authorized channel partners for lifecycle management guidance.