AO4803L

Overview

The AO4803L is a dual P-channel enhancement mode MOSFET manufactured by Alpha & Omega Semiconductor Inc. It features a 30V drain-source voltage rating and a continuous drain current of 5A at 25°C. The device is housed in an 8-SOIC surface-mount package with a maximum power dissipation of 2W. Key electrical parameters include a gate charge of 11nC at 10V, input capacitance of 520pF at 15V, and a threshold voltage of 2.5V at 250µA. The on-resistance is specified at 46mΩ at 5A and 10V. It operates within a junction temperature range of -55°C to 150°C.

Feature Summary

• Dual P-channel configuration for efficient bridge or half-bridge driver applications
• Logic-level gate drive capability supporting low-voltage control signals
• Surface-mount 8-SOIC packaging optimized for automated assembly processes

Applications

• Motor control circuits requiring dual P-channel switching
• Power management systems utilizing half-bridge topologies
• General-purpose low-side or high-side load switching applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm compliance with environmental standards such as RoHS. Confirm that the component status aligns with design requirements, noting that related variants may have different availability statuses. Ensure all electrical specifications match the target application constraints before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a compact dual P-channel solution with moderate current handling capabilities. The 8-SOIC package offers a balance between thermal performance and board space efficiency. Consider the 46mΩ on-resistance for power loss calculations in continuous operation scenarios. Verify compatibility with available gate drive voltages given the logic-level threshold specification.

Part Context

The AO4803L belongs to the AO4803 family of dual P-channel MOSFETs from Alpha & Omega Semiconductor. It shares identical electrical characteristics with the standard AO4803 variant but is designated as a Green Product option, indicating adherence to specific environmental manufacturing guidelines. The part serves as a direct functional replacement for the base model in existing designs requiring compliant sourcing.

Replacement Considerations

The AO4803A is electrically equivalent to the AO4803L and serves as a confirmed substitute. Both parts share identical pinouts, voltage ratings, and current capabilities. Designers can interchange these models without modifying circuit schematics or PCB layouts, provided the specific ordering suffix requirements are met.