AO4801A

Overview

The AO4801A is a single P-channel enhancement mode MOSFET manufactured by Alpha & Omega Semiconductor Inc. It utilizes advanced trench technology to achieve low on-resistance and fast switching speeds within an SOIC-8 surface-mount package. The device supports a drain-source voltage of -30V and a continuous drain current of -5A at VGS=-10V. Key electrical parameters include a maximum RDS(ON) of 48mΩ at VGS=-10V, 57mΩ at VGS=-4.5V, and 80mΩ at VGS=-2.5V. Gate charge (Qg) is typically 7nC at 4.5V. Thermal characteristics specify a junction-to-ambient resistance of 90°C/W in still air.

Feature Summary

• Advanced trench MOSFET technology for extremely low on-resistance
• Suitable for load switch and PWM applications
• Logic level gate drive capability with low threshold voltage
• 100% UIS and Rg tested for reliability

Applications

• Load switching circuits
• PWM control applications
• General purpose power management

Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon ordering. Confirm that the component meets RoHS compliance requirements if applicable to your assembly process. Ensure the supplier provides traceability documentation consistent with Alpha & Omega Semiconductor standards. Check for any specific handling instructions regarding electrostatic discharge during storage and installation.

Selection Notes

Select this component when a single P-channel MOSFET with -30V rating and -5A continuous current capacity is required. Consider the SOIC-8 package constraints for thermal dissipation in still air environments. Evaluate the gate charge and threshold voltage against your driver capabilities to ensure efficient switching performance at the intended operating frequency.

Part Context

The AO4801A belongs to Alpha & Omega Semiconductor's line of P-channel MOSFETs designed for general-purpose power switching. It shares the SOIC-8 footprint common to many logic-level FETs but offers specific electrical characteristics tailored for low-voltage applications. This part serves as a discrete solution for replacing dual-channel arrays or larger packages where space and cost efficiency are prioritized.

Replacement Considerations

Direct pin-compatible replacements may include other -30V P-channel MOSFETs in SOIC-8 packages such as the AO4803A, though parameter differences like current rating and package type must be verified. Always cross-reference absolute maximum ratings and thermal resistance values before substitution.