RT9365GQW

Overview

The RT9365GQW is a white LED driver IC manufactured by Richtek USA Inc., designed for multi-channel applications. It utilizes a switched capacitor charge pump topology to regulate current, featuring five independent outputs capable of delivering up to 100mA per channel. The device operates within a supply voltage range of 2.8V and supports PWM dimming for brightness control. It is housed in a compact 16-WQFN (3x3) package with an exposed pad, suitable for surface mount installation. The component functions as a DC-DC regulator optimized for driving white LEDs in portable electronics.

Feature Summary

• Integrates a five-channel charge pump architecture for simultaneous white LED regulation
• Supports pulse-width modulation dimming for precise brightness adjustment
• Incorporates low dropout current sources to maintain consistent LED performance

Applications

• White LED backlighting systems
• Camera flash lighting circuits
• Portable electronic display illumination

Procurement Notes

Verify the specific suffix GQW against the manufacturer datasheet to confirm pinout and thermal pad configuration. Ensure compatibility with the target PCB footprint, specifically the 16-WQFN (3x3) dimensions. Confirm RoHS3 compliance status if required by regional regulations. Cross-reference the DigiKey part number 1028-1521-2 or Mouser listing for accurate sourcing channels. Validate that the intended application voltage aligns with the 2.8V minimum supply requirement.

Selection Notes

Select this component when a multi-channel solution for white LEDs is required without external inductors. The charge pump topology offers efficiency advantages over linear regulators in certain voltage headroom scenarios. Consider the 16-WQFN package size constraints during layout planning. Evaluate the 100mA output capability against total LED string requirements. Verify that the operating temperature range meets the environmental conditions of the final assembly.

Part Context

This integrated circuit belongs to Richtek's portfolio of power management devices focused on LED driving solutions. It is distinct from battery chargers like the RT9465 series or buck converters such as the RT2652. The device addresses the need for regulated current sources in mobile and consumer electronics where space and efficiency are critical design parameters.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official cross-reference list for verified alternatives.