RT9278GQV

Overview

The RT9278GQV is a high-efficiency boost LDO converter and high-power white LED driver IC manufactured by Richtek. It features an internal switch capable of delivering 2A output current with a boost topology. The device operates within a supply voltage range of 1.1V to 5.5V and supports an output voltage up to 5.5V. Operating frequencies are specified at 600 kHz or 650 kHz depending on the source documentation. It includes overtemperature protection and functions as a DC-DC regulator for single-channel applications.

Feature Summary

• Integrates a high-efficiency boost converter with an internal power switch for compact design
• Provides dedicated drive capability for high-power white LEDs in lighting applications
• Includes built-in overtemperature protection to ensure operational safety under thermal stress

Applications

• Camera flash illumination systems
• High-power white LED driving circuits
• General LED lighting driver implementations

Procurement Notes

This component has reached end-of-life status, with official discontinuation dates cited around November 2026. Availability is limited to existing stock or surplus channels. Verify specific lot dates and storage conditions carefully due to moisture sensitivity level 3 requirements. Ensure compatibility with legacy designs before procurement, as new manufacturing is no longer supported by the manufacturer.

Selection Notes

Select this part for applications requiring a single-channel boost LED driver with integrated switching capabilities. Consider the 10-VDFN package constraints and thermal dissipation needs for 2A operation. Verify input voltage ranges align with the 1.1V minimum specification. Evaluate alternative components if long-term supply continuity is required, given the discontinued status.

Part Context

The RT9278 belongs to Richtek's LED lighting driver family, specifically designed for efficient power conversion in portable and fixed lighting. It combines boost regulation with LDO characteristics to manage LED current precisely. The GQV suffix denotes the specific package variant housed in a 10-VDFN (3x3 mm) footprint, suitable for surface-mount assembly in space-constrained electronic devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Designers should consult official replacement guides or contact the manufacturer for qualified alternatives compatible with the RT9278 series specifications.