AO4850L

Overview

The AO4850L is a dual N-channel logic-level MOSFET array manufactured by Alpha & Omega Semiconductor Inc. It features a 75V drain-source voltage (Vdss) and supports a continuous drain current of 2.3A at 25°C. The device is housed in an 8-SOIC surface-mount package with a maximum power dissipation of 1.1W. Key electrical characteristics include a gate threshold voltage (Vgs(th)) of 3V at 250µA, a maximum gate charge (Qg) of 7nC at 10V, and an input capacitance (Ciss) of 380pF at 30V. The on-resistance (Rds(on)) is specified as 130mΩ at 3.1A and 10V. Operating junction temperature ranges from -55°C to 150°C.

Feature Summary

• Dual N-channel configuration within a single compact package for space-efficient circuit design.
• Logic-level gate drive capability allowing direct interfacing with standard digital logic outputs.
• Surface-mount construction optimized for automated assembly processes.

Applications

• Battery protection circuits requiring dual switch functionality.
• Load switching applications in portable electronic devices.
• Power management modules in consumer electronics.

Procurement Notes

Verify component authenticity through authorized distribution channels due to the part's discontinued status. Confirm lot traceability and RoHS compliance documentation prior to integration. Ensure storage conditions adhere to moisture sensitivity level requirements to prevent package damage during soldering. Validate that the specific revision matches design specifications given end-of-life constraints.

Selection Notes

Select this component when a dual N-channel solution is required with moderate current handling capabilities. The 75V rating suits low-voltage DC systems. Consider thermal management carefully as the 1.1W power dissipation limit is relatively low for the 8-SOIC package. Compare against newer alternatives if long-term supply stability is critical for the product lifecycle.

Part Context

The AO4850L belongs to the AO485 series of dual MOSFET arrays from Alpha & Omega Semiconductor. This series targets cost-sensitive applications needing multiple switches in minimal board area. The 'L' suffix typically denotes logic-level gate thresholds. It serves as a discrete alternative to integrated power switches in simple control loops.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Designers should consult manufacturer obsolescence notices or technical support for qualified pin-compatible replacements suitable for the 8-SOIC footprint.