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Product Detailed Parameters
- Description：MOSFET P-CH 20V 17A SO-8
- Series：*
- Mfr：Analog Power Inc.
- Package：Bulk
- FET Type：P-Channel
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：-
- Current - Continuous Drain (Id) @ 25°C：-
- Drive Voltage (Max Rds On, Min Rds On)：-
- Rds On (Max) @ Id, Vgs：-
- Vgs(th) (Max) @ Id：-
- Gate Charge (Qg) (Max) @ Vgs：-
- Vgs (Max)：-
- Input Capacitance (Ciss) (Max) @ Vds：-
- FET Feature：-
- Power Dissipation (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Supplier Device Package：-
- Package / Case：-
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Overview
The AM4421P is a P-Channel MOSFET manufactured by Analog Power Inc. It features a maximum drain-source voltage (VDS) of -20 V and a gate-source voltage (VGS) rating of ±20 V. The device supports a continuous drain current (ID) of 17 A at 25°C case temperature. Typical on-resistance (RDS(on)) is specified at 3.6 mΩ with a gate drive of 10 V, and 4.9 mΩ at 4.5 V gate drive. Total gate charge (QG) is typically 63 nC. The component is housed in an SO-8 surface-mount package with a power dissipation capability of 3.1 W.
Feature Summary
- Surface-mount construction for automated assembly
- Low on-resistance for efficient power switching
- Compatible with standard logic-level gate drives
Applications
- DC-DC converter output stages
- Power management integrated circuits
- Load switch applications
Procurement Notes
Verify the manufacturer designation as Analog Power Inc. when sourcing components. Confirm the specific datasheet version to ensure alignment with electrical characteristics such as RDS(on) thresholds and thermal resistance values. Ensure the SO-8 package footprint matches the design requirements before finalizing procurement orders.
Selection Notes
Select this component for low-voltage applications requiring high current handling within a compact surface-mount form factor. Evaluate the thermal performance based on the 3.1 W dissipation limit and the specific PCB copper area available for heat spreading. Consider the gate charge specifications when designing driver circuits for high-frequency switching operations.
Part Context
This part belongs to the Analog Power series of single P-channel MOSFETs designed for general-purpose power switching. The SO-8 package provides a balance between current capacity and board space efficiency compared to smaller SOT packages or larger through-hole options.
Replacement Considerations
Cross-reference with other P-Channel MOSFETs rated for -20 V and 17 A in SO-8 packages. Verify pinout compatibility and thermal characteristics before substituting.
