AON6998

Overview

The AON6998 is an obsolete dual N-channel MOSFET array manufactured by Alpha & Omega Semiconductor Inc. It features a 30V drain-source voltage (Vdss) and asymmetrical continuous drain current ratings of 19A and 26A at 25°C. The device utilizes an 8-DFN (5x6mm) surface-mount package with a maximum power dissipation of 3.1W. Key electrical parameters include a gate threshold voltage (Vgs(th)) of 2.2V @ 250µA, a maximum on-resistance (Rds(on)) of 5.2mΩ @ 20A/10V, a gate charge (Qg) of 13nC @ 10V, and input capacitance (Ciss) of 820pF @ 15V. Operating temperature ranges from -55°C to 150°C.

Feature Summary

• Dual N-channel configuration in an asymmetrical arrangement for efficient circuit design
• Logic-level gate drive capability enabling direct interface with standard logic outputs
• Low on-resistance optimized for high-current applications within thermal constraints

Applications

• DC-DC converter synchronous rectification stages
• Load switching circuits requiring low insertion loss
• Power management modules in portable electronic devices

Procurement Notes

This component is officially classified as obsolete and no longer manufactured by Alpha & Omega Semiconductor Inc. Verification of availability requires checking distributor inventories for remaining stock or identifying approved substitute part numbers. Ensure that any sourced units match the original datasheet specifications precisely, as obsolescence notices may affect long-term supply continuity.

Selection Notes

When selecting this component, verify compatibility with the required 30V system voltage and confirm that the thermal management solution supports the 3.1W power dissipation limit. The asymmetrical current ratings necessitate careful consideration of which channel handles higher loads. Check for available substitutes if new production designs are required due to the obsolete status.

Part Context

The AON6998 belongs to the AON699 family of dual N-channel MOSFET arrays from Alpha & Omega Semiconductor Inc. This series is designed for space-constrained applications requiring multiple switching elements in a single package. The specific model provides distinct current handling capabilities for each channel within the shared thermal environment of the 8-DFN footprint.

Replacement Considerations

The manufacturer recommends the AONY36354 as a substitute part number. Verify pinout compatibility and electrical parameter alignment before implementation.