RT9218BPS

Overview

The RT9218BPS is a dual-output power management IC from Richtek USA Inc., integrating one synchronous buck PWM controller and one linear regulator (LDO). It operates with an input voltage range up to 5.5V, delivering a maximum output current of 3A for the buck converter. The device features a fixed switching frequency of 300kHz and includes protection functions such as overcurrent and thermal shutdown. It is housed in a 14-SOP package and supports an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates a synchronous buck converter and a linear regulator in a single package
• Provides independent logic supply generation capabilities
• Includes built-in overcurrent and thermal protection mechanisms

Applications

• Generating logic supplies in portable electronic devices
• Power management systems requiring combined switching and linear regulation
• Consumer electronics with space-constrained designs

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notifications, as this part may be obsolete. Ensure packaging specifications match system requirements before procurement.

Selection Notes

Select this component when a design requires both efficient step-down conversion and low-noise linear regulation within a compact footprint. Evaluate thermal performance under maximum load conditions and ensure input voltage constraints align with system power rails.

Part Context

This device belongs to Richtek's portfolio of integrated power management solutions designed for high-density applications. It combines switching efficiency with linear regulator simplicity, targeting markets where board space is limited and multiple voltage rails are needed from a single source.

Replacement Considerations

Check for pin-compatible alternatives from the same manufacturer family. Verify electrical parameters such as output current capability and switching frequency against original design requirements before substitution.