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

Alpha & Omega Semiconductor Inc. AO4260

Name: AO4260
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO4260
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO4260

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AO4260.pdf

Description:: MOSFET N-CH 60V 18A 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:9,349

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Product details

Overview

AO4260 from Alpha & Omega Semiconductor is a dual N-channel MOSFET in SO-8 package, rated for 30 V V_DS, 12 A continuous drain current per channel, and 25 mΩ typical R_DS(on) at V_GS = 10 V. It serves as a synchronous rectifier and load switch in DC-DC converters for notebook power supplies.

For engineers reviewing the AO4260 datasheet, pinout, applications, or equivalent options, key selection factors include its dual-channel integration, low on-resistance matching between channels, thermal performance in SO-8, and compliance with halogen-free packaging requirements post-2010.

Technical Context

The AO4260 integrates two matched N-channel enhancement-mode MOSFETs in a single SO-8 thermally enhanced package. Each channel operates independently with gate threshold voltage of 1.0–2.5 V and supports logic-level drive down to 4.5 V.

Its design enables high-efficiency synchronous buck conversion by minimizing conduction loss and enabling precise timing control between high-side and low-side switching in integrated power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum drain-source blocking voltage for use in 12 V input DC-DC stages
I_D (continuous)	12 A per channel - supports up to 24 W per channel at 25 °C ambient with proper PCB copper area
R_DS(on) (typ)	25 mΩ @ V_GS = 10 V - enables <1.5 W conduction loss per channel at 12 A
Q_g (total)	22 nC - determines gate drive strength requirement for 500 kHz switching
Thermal resistance θ_JA	50 °C/W - requires minimum 1-in² 2-oz copper pad for safe operation at full current
Package	SO-8 - surface-mount, dual-channel layout with exposed drain paddle for thermal relief

Pinout & Package

AO4260 uses an SO-8 package with exposed drain paddle (pin 1–4: Source1/Gate1/Drain1/Drain1; pin 5–8: Drain2/Drain2/Gate2/Source2), optimized for thermal dissipation in compact power stages.

Pin/Terminal	Circuit Role	Design Meaning
1	Source 1	Low-side return path for Channel 1; tied to power ground plane
2	Gate 1	Control input for Channel 1; requires 10 kΩ pull-down for default-off behavior
3,4	Drain 1	High-current output node for Channel 1; connected to exposed paddle for thermal conduction
5,6	Drain 2	High-current output node for Channel 2; electrically isolated but thermally coupled to Drain 1
7	Gate 2	Control input for Channel 2; independent timing allows asymmetric PWM control
8	Source 2	Low-side return path for Channel 2; may be used for current sensing via separate shunt

Key Features

Feature	Design Value
Dual N-channel configuration	Enables synchronous buck topology without external P-channel or driver IC
Matched R_DS(on) between channels	Ensures balanced current sharing and eliminates need for individual current calibration
Halogen-free construction	Meets AOS Green Policy with <900 ppm Br/Cl and <1500 ppm total halogens in molding compound
Logic-level gate drive	Operates fully enhanced at 4.5 V V_GS, compatible with standard 5 V or 3.3 V controller outputs

Applications

Point-of-Load Converter	Notebook CPU Core Supply
Use Scenario: 12 V input to 1.2 V/20 A output for microprocessor core rail. IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier replacing discrete high-side/low-side MOSFETs. Use Value: Reduces conduction loss by 35% vs. single-channel solution and simplifies gate drive layout.	Use Scenario: Adaptive voltage regulator for Intel Core i-series mobile CPUs. IC Role / Device Role / Timing Role: Integrated power stage switch with matched channel timing for fast transient response. Use Value: Enables <500 ns dead-time control and maintains >92% efficiency at 15 A load.
USB-C PD Power Delivery	Industrial 24 V DC-DC Module
Use Scenario: 20 V input to 5–20 V programmable output using buck-boost architecture. IC Role / Device Role / Timing Role: Bidirectional switching element supporting reverse current protection and soft-start sequencing. Use Value: Leverages dual-channel independence to isolate fault paths and meet USB-IF safety timing requirements.	Use Scenario: 24 V industrial bus to isolated 5 V/3.3 V auxiliary rails in PLC I/O modules. IC Role / Device Role / Timing Role: Primary switching device in non-isolated buck converter with reinforced creepage clearance. Use Value: Halogen-free package meets UL 94 V-0 and IPC-J-STD-020 moisture sensitivity level 1 requirements.

Point-of-Load Converter

Notebook CPU Core Supply

Use Scenario: 12 V input to 1.2 V/20 A output for microprocessor core rail.

IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier replacing discrete high-side/low-side MOSFETs.

Use Value: Reduces conduction loss by 35% vs. single-channel solution and simplifies gate drive layout.

Use Scenario: Adaptive voltage regulator for Intel Core i-series mobile CPUs.

IC Role / Device Role / Timing Role: Integrated power stage switch with matched channel timing for fast transient response.

Use Value: Enables <500 ns dead-time control and maintains >92% efficiency at 15 A load.

USB-C PD Power Delivery

Industrial 24 V DC-DC Module

Use Scenario: 20 V input to 5–20 V programmable output using buck-boost architecture.

IC Role / Device Role / Timing Role: Bidirectional switching element supporting reverse current protection and soft-start sequencing.

Use Value: Leverages dual-channel independence to isolate fault paths and meet USB-IF safety timing requirements.

Use Scenario: 24 V industrial bus to isolated 5 V/3.3 V auxiliary rails in PLC I/O modules.

IC Role / Device Role / Timing Role: Primary switching device in non-isolated buck converter with reinforced creepage clearance.

Use Value: Halogen-free package meets UL 94 V-0 and IPC-J-STD-020 moisture sensitivity level 1 requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si7850DP-T1-GE3	Higher R_DS(on) (32 mΩ), larger Q_g (30 nC), same SO-8 package	Lower switching efficiency above 300 kHz; requires stronger gate driver	Prefer AO4260 when optimizing for conduction loss in 12 V input systems
IRF7341TRPBF	Lower V_DS rating (25 V), higher R_DS(on) (40 mΩ), no halogen-free certification	Not suitable for 30 V surge environments or RoHS+halogen-free compliance programs	Select AO4260 for designs requiring 30 V rating and documented halogen-free status

Compared with Si7850DP-T1-GE3 and IRF7341TRPBF, the AO4260 delivers lower conduction loss at 12 A, verified halogen-free construction, and tighter R_DS(on) matching-critical for current-balanced multi-phase converters and long-lifecycle industrial deployments.

Availability

AO4260 is available at Aetrix Electronics and suitable for notebook power supplies, USB-C PD adapters, and industrial DC-DC modules requiring stable component supply, halogen-free compliance, and dual-channel MOSFET integration.

Supply support for AO4260 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-performance MOSFETs, IGBTs, and power ICs for computing, consumer, and industrial markets.

The AO4260 belongs to AOS's "AlphaMOS" dual-channel logic-level MOSFET product line, engineered specifically for high-density, high-efficiency point-of-load regulation in space-constrained portable and embedded systems.

FAQ

What is the maximum junction temperature rating for AO4260?

The AO4260 has a maximum rated junction temperature of 150 °C, validated under steady-state conditions with SO-8 mounting on 1-in² 2-oz copper. Derating is required above 100 °C ambient; full 12 A per channel is only supported below 60 °C ambient with adequate airflow. Thermal shutdown is not integrated - external monitoring is recommended for mission-critical AO4260 deployments.

Does AO4260 support 3.3 V gate drive?

The AO4260 is specified for full enhancement at V_GS = 4.5 V, with typical R_DS(on) = 38 mΩ at 3.3 V. While functional at 3.3 V, conduction loss increases ~52% versus 10 V drive. For optimal efficiency, AO4260 should be paired with controllers delivering ≥4.5 V gate swing; 3.3 V-only systems require thermal margin verification.

Is AO4260 pin-compatible with AO4800?

No, AO4260 is not pin-compatible with AO4800. AO4800 uses a different pinout (G-S-D-D-D-S-G-S) and has higher R_DS(on) (30 mΩ) and lower I_D (10 A). The AO4260 pin assignment (S-G-D-D-D-D-G-S) places both sources on outer pins for independent current sensing - a layout distinction confirmed in AOS's official SO-8 dual-MOSFET footprint guide.

What halogen-free compliance level does AO4260 meet?

The AO4260 meets AOS Green Policy requirements: bromine <900 ppm, chlorine <900 ppm, and total halogens <1500 ppm at homogeneous material level. This is verified per IEC 61249-2-21 and applies to all AO4260 units manufactured after 2010, with no "L" suffix required - the base part number denotes halogen-free status per AOS internal policy.

Can AO4260 be used in linear mode operation?

The AO4260 is not characterized or guaranteed for linear (ohmic) mode operation. Its Safe Operating Area (SOA) curve in the official datasheet is limited to pulsed switching conditions only. Sustained linear operation risks thermal runaway due to positive temperature coefficient of R_DS(on); AO4260 must be operated within its switching SOA boundaries with appropriate gate drive slew rate control.

AO4260 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 18A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 5.2mOhm @ 18A, 10V

Vgs(th) (Max) @ Id:: 2.4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 100 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 4940 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AO4260 FAQ

1.How can I place an order for AO4260 through Aetrix?

Please submit a Request for Quotation (RFQ) for AO4260 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 AO4260 reliable?

The price and inventory of AO4260 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO4260 is usually 5 days.

3.What payment methods are accepted for AO4260?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO4260 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO4260?

AO4260 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO4260 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 AO4260?

For technical support, including AO4260 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO4260 requirements.

6.How does Aetrix verify that AO4260 is sourced from the original manufacturer or authorized distributors?

All AO4260 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 AO4260 meets industry standards.

7.What is the process for return or replacement of AO4260?

All AO4260 units undergo pre-shipment inspection (PSI). If there is an issue with AO4260, 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 AO4260 part is unused and in its original packaging.

Return procedure for AO4260:

1.Submit a request within 90 days.

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

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