RT8115AZQW

Overview

The RT8115AZQW is a high-efficiency single synchronous buck PWM controller manufactured by Richtek USA Inc. It operates with a fixed switching frequency of 300 kHz and supports an adjustable output voltage range from 0.6 V to 5.5 V. The device features a wide input voltage range, enabling compatibility with various power supply rails. It is housed in a compact 10-WDFN package, designed for surface-mount installation. The controller integrates essential protection mechanisms including over-current protection and thermal shutdown to ensure reliable operation under varying load conditions.

Feature Summary

• Single-phase synchronous buck topology for efficient step-down conversion
• Integrated high-side and low-side gate drivers for external MOSFETs
• Fixed 300 kHz switching frequency for optimized component size
• Built-in over-current and thermal protection circuits

Applications

• Point-of-load (POL) converters for computing modules
• Power supplies for communication infrastructure equipment
• Industrial control system power distribution
• Consumer electronics requiring stable DC-DC regulation

Procurement Notes

Verify the specific suffix AZQW against the manufacturer's latest datasheet to confirm pinout and electrical specifications. Ensure the supplier provides original packaging documentation to validate authenticity. Check for RoHS compliance status as required by your assembly standards. Confirm availability of the 10-WDFN package variant before finalizing procurement orders.

Selection Notes

Select this controller when a fixed 300 kHz frequency suits the design constraints. It is suitable for applications requiring a single output channel with external power stages. Consider the WDFN package size if board space is limited. Evaluate the input voltage range requirements against the controller's specified limits to ensure proper operation across all operating conditions.

Part Context

This component belongs to Richtek's family of synchronous buck controllers, targeting high-density power management solutions. It complements other models in the series by offering a balance between efficiency and simplicity. The device is part of the broader PMIC portfolio used in industrial and consumer sectors. Its design focuses on reducing external component count while maintaining robust performance characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing designs by comparing pin configurations and electrical parameters with alternative controllers from the same manufacturer or other vendors.