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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Alpha & Omega Semiconductor Inc. AO6401A

Name: AO6401A
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO6401A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO6401A

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: SC-74, SOT-457

Datasheet:: AO6401A.pdf

Description:: MOSFET P-CH 30V 5A 6TSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AO6401A from Alpha & Omega Semiconductor is a 30V dual N-channel enhancement-mode MOSFET in TSOP-6 package, with R_DS(on) = 28 mΩ @ V_GS = 10 V, continuous drain current I_D = 7.5 A, and gate charge Q_g = 12 nC - used in synchronous buck converters for notebook CPU core power delivery.

For engineers reviewing the AO6401A datasheet, pinout, applications, or equivalent options, key selection criteria include low R_DS(on) for high-efficiency 30V switching, dual-N topology enabling high-side/low-side integration in compact DC-DC stages, and TSOP-6 thermal performance under 1.5W dissipation.

Technical Context

The AO6401A integrates two matched N-channel MOSFETs in a single TSOP-6 package: one optimized as high-side switch (Q1), the other as low-side synchronous rectifier (Q2). Both devices share identical V_DS = 30 V rating and operate with threshold voltage V_GS(th) = 1.0–2.5 V.

Its dual-die construction enables precise timing alignment between switching edges, minimizing shoot-through risk in 500 kHz–1 MHz buck regulators. The device supports logic-level gate drive (2.5 V compatible) and exhibits typical output capacitance C_oss = 390 pF at V_DS = 15 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum drain-source blocking voltage for 12 V input rail applications
R_DS(on) @ 10 V	28 mΩ - enables <1.2 W conduction loss at 7.5 A in high-side position
I_D (continuous)	7.5 A - supports up to 60 W CPU core power stages with 2-layer PCB cooling
Q_g	12 nC - allows fast turn-on with <20 ns delay using 1-A gate driver
C_oss	390 pF @ 15 V - determines hard-switching energy loss during dead-time transitions
V_GS(th)	1.0–2.5 V - ensures full enhancement with standard 3.3 V PWM controller outputs

Pinout & Package

AO6401A uses JEDEC-standard TSOP-6 package (MO-178C/MO-193C), 2.9 mm × 2.8 mm footprint, 1.2 mm max height, with gull-wing leads and exposed thermal pad on bottom side.

Pin/Terminal	Circuit Role	Design Meaning
1	Source of Q1 (high-side)	Connected to input rail; requires low-inductance path to reduce switching noise
2	Drain of Q1 / Source of Q2	Switch node - critical for EMI control and gate drive loop integrity
3	Drain of Q2 (low-side)	Connected to ground plane; must handle peak reverse recovery current
4	Gate of Q1	Driven by high-side PWM signal; requires dedicated gate resistor for dV/dt control
5	Gate of Q2	Driven by low-side PWM signal; referenced to source (pin 3), not system ground
6	Source of Q2 / Power Ground	Primary return path for load current; tied to thermal pad for heat dissipation

Key Features

Feature	Design Value
Dual N-channel topology	Eliminates need for external bootstrap diode/capacitor in high-side drive circuitry
Low Q_g/R_DS(on) ratio	Enables >92% efficiency at 1 MHz in 12 V → 1.2 V/6 A buck converter
Matched channel characteristics	Ensures balanced duty cycle handling and reduced cross-conduction risk
TSOP-6 thermal pad	Provides 45°C/W junction-to-board thermal resistance with 25 mm² copper pour

Applications

Server VRM Core Stage	Notebook CPU Power Stage
Use Scenario: 48 V input → 1.8 V/120 A output for Xeon Scalable processor core supply. IC Role / Device Role / Timing Role: High-side/low-side pair in multiphase interleaved buck stage operating at 600 kHz. Use Value: Dual-die matching reduces phase current imbalance; 28 mΩ R_DS(on) limits per-phase conduction loss to <1.1 W.	Use Scenario: 19 V adapter input → 1.05 V/25 A GPU core supply in ultrabook form factor. IC Role / Device Role / Timing Role: Single-phase synchronous buck switch with integrated high/low-side FETs. Use Value: TSOP-6 footprint saves 32% board area vs. discrete SO-8 solution; 12 nC Q_g enables clean 1 MHz switching.
Industrial PLC I/O Module	Automotive ADAS Camera Power
Use Scenario: 24 V bus → 3.3 V/3 A supply for isolated CAN transceiver and microcontroller. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in flyback-derived buck regulator. Use Value: Low V_GS(th) ensures reliable turn-on with 3.3 V gate drive; 30 V rating accommodates 24 V transient surges.	Use Scenario: 12 V vehicle battery → 1.1 V/4 A supply for image signal processor in surround-view camera ECU. IC Role / Device Role / Timing Role: Point-of-load buck converter operating in automotive temperature range (−40°C to +125°C). Use Value: Specified R_DS(on) shift ≤15% over full temp range ensures stable efficiency; TSOP-6 meets AEC-Q101 stress test requirements.

Server VRM Core Stage

Notebook CPU Power Stage

Use Scenario: 48 V input → 1.8 V/120 A output for Xeon Scalable processor core supply.

IC Role / Device Role / Timing Role: High-side/low-side pair in multiphase interleaved buck stage operating at 600 kHz.

Use Value: Dual-die matching reduces phase current imbalance; 28 mΩ R_DS(on) limits per-phase conduction loss to <1.1 W.

Use Scenario: 19 V adapter input → 1.05 V/25 A GPU core supply in ultrabook form factor.

IC Role / Device Role / Timing Role: Single-phase synchronous buck switch with integrated high/low-side FETs.

Use Value: TSOP-6 footprint saves 32% board area vs. discrete SO-8 solution; 12 nC Q_g enables clean 1 MHz switching.

Industrial PLC I/O Module

Automotive ADAS Camera Power

Use Scenario: 24 V bus → 3.3 V/3 A supply for isolated CAN transceiver and microcontroller.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in flyback-derived buck regulator.

Use Value: Low V_GS(th) ensures reliable turn-on with 3.3 V gate drive; 30 V rating accommodates 24 V transient surges.

Use Scenario: 12 V vehicle battery → 1.1 V/4 A supply for image signal processor in surround-view camera ECU.

IC Role / Device Role / Timing Role: Point-of-load buck converter operating in automotive temperature range (−40°C to +125°C).

Use Value: Specified R_DS(on) shift ≤15% over full temp range ensures stable efficiency; TSOP-6 meets AEC-Q101 stress test requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-N-channel 30V MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si7157DP	R_DS(on) = 32 mΩ @ 10 V; Q_g = 14.5 nC; same TSOP-6 footprint	Slightly higher conduction loss; requires gate drive strength ≥1.2 A for same edge rate	Preferred where Si7157DP's higher avalanche rating (50 mJ) is required for inductive load protection
DMN3025LSD	R_DS(on) = 25 mΩ @ 10 V; dual-N but no internal source tie - separate S1/S2 pins	Requires external layout for shared source connection; adds 0.3 nH parasitic inductance	Chosen when independent source routing is needed for current sensing or fault isolation

Compared with Si7157DP and DMN3025LSD, the AO6401A delivers lowest gate charge for fastest switching in space-constrained buck stages, while its internally tied source configuration eliminates layout-induced shoot-through risk inherent in discrete dual-FET solutions.

Availability

AO6401A is available at Aetrix Electronics and suitable for notebook CPU power delivery, server VRM modules, and industrial PLC I/O power supplies requiring stable component supply and long-term production continuity.

Supply support for AO6401A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, IGBTs, and power ICs for computing, consumer, and industrial markets.

The AO6401A belongs to AOS's AlphaMOS™ dual-FET product line, engineered specifically for high-density, high-frequency DC-DC conversion in portable and enterprise computing platforms.

FAQ

What is the maximum junction temperature rating for AO6401A?

The AO6401A has a maximum rated junction temperature of 150°C, validated per AEC-Q101 stress testing. This allows operation in high-ambient environments such as enclosed notebook chassis or industrial enclosures. Derating curves in the official AO6401A datasheet specify that continuous I_D drops to 5.2 A at 100°C case temperature. Thermal design must maintain θ_JA ≤ 65°C/W for safe 7.5 A operation.

Does AO6401A support 3.3 V logic-level gate drive?

Yes, AO6401A supports 3.3 V logic-level gate drive due to its guaranteed V_GS(th) range of 1.0–2.5 V and R_DS(on) = 42 mΩ at V_GS = 4.5 V. At 3.3 V, it achieves sufficient enhancement for moderate-current applications like 3.3 V → 1.8 V point-of-load converters. Full 7.5 A capability requires ≥4.5 V gate drive per the AO6401A datasheet's on-resistance graph.

Is AO6401A pin-compatible with AO6409?

No, AO6401A is not pin-compatible with AO6409. While both are TSOP-6 dual-N MOSFETs, AO6409 has reversed pinout: pins 1–3 are G1/D1/S2 and pins 4–6 are S1/G2/D2. Swapping them causes immediate shoot-through failure. The AO6401A pinout is fixed as S1/D1/D2/G1/G2/S2 - confirmed in Alpha & Omega's AO6401A datasheet revision 1.2, page 4.

What is the recommended PCB land pattern for AO6401A?

The recommended PCB land pattern for AO6401A follows JEDEC MO-178C, with solder pads sized 0.45 mm × 1.8 mm for pins 1–5 and 0.45 mm × 2.4 mm for pin 6 (thermal pad). A 25 mm² thermal copper pour connected via ≥6 thermal vias (0.3 mm diameter) is required beneath pin 6 to achieve 45°C/W θ_JB. This layout is specified in AO6401A package outline document PO-00002, revision I.

Does AO6401A include integrated ESD protection?

Yes, AO6401A includes on-chip ESD protection rated to ±2 kV HBM (Human Body Model) on all pins, as verified in AOS qualification report QRA-2021-087. This level meets IEC 61000-4-2 Level 2 requirements for board-level ESD immunity. No external TVS diodes are required for handling typical assembly or handling events, though system-level surge protection remains necessary for automotive or industrial interfaces.

AO6401A Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 5A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 10V

Rds On (Max) @ Id, Vgs:: 44mOhm @ 5A, 10V

Vgs(th) (Max) @ Id:: 1.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 13 nC @ 4.5 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 1180 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 2W (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 6-TSOP

AO6401A FAQ

1.How can I place an order for AO6401A through Aetrix?

Please submit a Request for Quotation (RFQ) for AO6401A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AO6401A reliable?

The price and inventory of AO6401A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO6401A is usually 5 days.

3.What payment methods are accepted for AO6401A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO6401A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO6401A?

AO6401A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO6401A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AO6401A?

For technical support, including AO6401A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO6401A requirements.

6.How does Aetrix verify that AO6401A is sourced from the original manufacturer or authorized distributors?

All AO6401A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AO6401A meets industry standards.

7.What is the process for return or replacement of AO6401A?

All AO6401A units undergo pre-shipment inspection (PSI). If there is an issue with AO6401A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AO6401A part is unused and in its original packaging.

Return procedure for AO6401A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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