RT8205AGQW

Overview

The RT8205AGQW is a high-efficiency main power supply controller for notebook computers, manufactured by Richtek USA Inc. It features a wide input voltage range of 6V to 25V and provides two adjustable outputs from 2V to 5.5V, alongside fixed 3.3V and 5V linear regulators. The device operates within a temperature range of -40°C to 85°C and is housed in a 24-WQFN (4x4) package.

Feature Summary

• Dual step-down switch mode power supply controllers with adjustable output voltages
• Integrated fixed 3.3V and 5V linear regulators with automatic bootstrapping
• Constant on-time control architecture ensuring rapid load step response

Applications

• Notebook computer main power supplies
• Sub-notebook computer power systems
• 3-cell lithium-ion battery-powered devices
• 4-cell lithium-ion battery-powered devices

Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS compliance status and check for any product change notifications regarding the specific manufacturing lot. Ensure storage conditions meet moisture sensitivity level requirements before assembly.

Selection Notes

Select this controller for applications requiring dual adjustable rails and integrated LDOs from a single wide-input source. Consider the 24-WQFN package size for space-constrained designs. Evaluate thermal performance based on the specified quiescent power dissipation and operating temperature range.

Part Context

This component belongs to the RT8205 family of high-efficiency power supply controllers designed specifically for portable computing platforms. It integrates PWM controllers and linear regulators to simplify power tree design for battery-operated systems requiring multiple logic supply voltages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.