AAT3681AIJS-4.2-T1

Overview

The AAT3681AIJS-4.2-T1 is a battery management integrated circuit manufactured by Skyworks Solutions, Inc., designed for USB port and AC adapter charging applications. It supports Lithium-ion and Lithium Polymer battery types with a fixed output voltage of 4.2 V. The device operates within a supply voltage range of 4 V to 7.5 V and features an SC70JW-8 surface-mount package. It functions reliably across an operating temperature range from -40 C to +85 C, with a quiescent current of 500 uA and power dissipation capability of 687 mW.

Feature Summary

• Supports charging via USB ports or AC adapters
• Compatible with Lithium-ion and Lithium Polymer batteries

Applications

• USB port powered devices
• AC adapter powered devices

Procurement Notes

This component is officially listed as End-of-Life (EOL) by the manufacturer. Availability is restricted, and Mouser does not currently sell this product in all regions. Verification of current stock status and alternative sourcing channels is required before procurement planning. Confirm compatibility with existing designs due to discontinuation status.

Selection Notes

Select this part only if the design specifically requires USB or AC adapter input charging for Li-ion or Li-Po batteries within the 4 V to 7.5 V input range. The SC70JW-8 package must fit the PCB layout constraints. Consider the EOL status when designing for long-term production viability.

Part Context

The AAT3681 belongs to the Skyworks PMIC family focused on charge management. It is categorized under Battery Management products. The specific suffix indicates the 4.2 V output variant packaged in SC70JW-8. This model is part of a broader portfolio of power management solutions for portable electronics.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the End-of-Life status, engineers should consult Skyworks Solutions directly for recommended replacements or evaluate other PMIC families.