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

Alpha & Omega Semiconductor Inc. AON3419

Name: AON3419
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON3419
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON3419

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-SMD, Flat Leads

Datasheet:: AON3419.pdf

Description:: MOSFET P-CH 30V 10A 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:2,470

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Product details

Overview

AON3419 from Alpha & Omega Semiconductor is a 30 V, 7.5 A N-channel enhancement-mode MOSFET in a 3x3 mm DFN package with 2.8 mΩ R_DS(on) at V_GS = 10 V, optimized for high-efficiency DC-DC conversion and load switching in portable power management systems.

For engineers reviewing the AON3419 datasheet, pinout, applications, or equivalent options, key selection criteria include its low gate charge (Q_g = 9.5 nC), fast switching speed (t_on = 12 ns), thermally enhanced DFN package, and halogen-free compliance per AOS Green Policy.

Technical Context

The AON3419 employs a trench-gate process to achieve low on-resistance and high current density in a compact surface-mount package. Its logic-level gate threshold (V_GS(th) = 1.2–2.2 V) enables direct drive from 3.3 V microcontrollers without level-shifting circuitry.

Thermal performance is enhanced by an exposed drain pad soldered to PCB copper, delivering θ_JA = 50°C/W (1-in² 2-oz Cu) and supporting continuous I_D up to 7.5 A at T_A = 25°C with proper layout.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - supports input rails up to 24 V nominal with margin for transients in industrial and portable systems
R_DS(on) @ V_GS = 10 V	2.8 mΩ - minimizes conduction loss in high-current synchronous buck stages
Q_g	9.5 nC - enables efficient 1–2 MHz switching in compact DC-DC converters
V_GS(th)	1.2–2.2 V - ensures full enhancement with 3.3 V logic outputs, eliminating gate driver overhead
Package	3×3 mm DFN-8 - provides low thermal resistance and space savings versus SO-8 or TO-252
Halogen status	Halogen-free - compliant with AOS Green Policy effective 2010; no Br/Cl >900 ppm, total Br+Cl <1500 ppm

Pinout & Package

Package: 3×3 mm DFN-8 with exposed drain pad (pin 1–3: source; pin 4–6: gate; pin 7–8: drain; pin 8 also connects to exposed pad).

Pin/Terminal	Circuit Role	Design Meaning
1–3	Source	Low-side return path; internally tied to common source node for parallel operation
4–6	Gate	Control terminal; low Q_g reduces driver power and EMI during switching
7–8 + Exposed Pad	Drain	Main current path and thermal interface; requires solder mask opening and thermal via array to inner ground planes

Key Features

Feature	Design Value
Ultra-low R_DS(on)	2.8 mΩ at 10 V enables <1 W conduction loss at 7 A in 12 V input buck converters
Logic-level gate drive	V_GS(th) max 2.2 V allows direct interfacing with 3.3 V MCUs and PMICs without external level shifters
Trench MOSFET architecture	Delivers higher cell density and lower gate charge than planar equivalents of same die size
Halogen-free construction	Meets AOS Green Policy with Br/Cl <900 ppm each and total <1500 ppm - suitable for RoHS-compliant end equipment

Applications

Battery Protection Circuit	USB Power Delivery Switch
Use Scenario: Reverse polarity and overcurrent protection in single-cell Li-ion battery packs. IC Role / Device Role / Timing Role: Low-side N-channel switch controlled by protection IC to disconnect battery under fault conditions. Use Value: 2.8 mΩ R_DS(on) limits voltage drop to <21 mV at 7.5 A, preserving pack runtime and minimizing heat generation.	Use Scenario: In-line power path control for USB-C PD 3.0 applications requiring 3 A continuous current. IC Role / Device Role / Timing Role: Load switch enabling/disabling VBUS with fast turn-on (<15 ns) and minimal insertion loss. Use Value: Logic-level gate ensures compatibility with 3.3 V PD controller GPIOs; DFN package fits tight board space near connector.
Point-of-Load Converter High-Side Switch	LED Driver Current Sink
Use Scenario: High-efficiency 5 V → 3.3 V synchronous buck converter in FPGA I/O power supplies. IC Role / Device Role / Timing Role: Synchronous rectifier in low-side position, commutated at 1.5 MHz with 9.5 nC Q_g. Use Value: Low Q_g and R_DS(on) reduce switching and conduction losses, achieving >94% efficiency at 5 A output.	Use Scenario: Constant-current sink for RGB LED backlighting in portable displays. IC Role / Device Role / Timing Role: PWM-controlled current path with fast turn-off to maintain color fidelity across dimming ranges. Use Value: 12 ns t_on and 15 ns t_off support >20 kHz PWM without visible flicker; low R_DS(on) avoids droop at peak LED currents.

Battery Protection Circuit

USB Power Delivery Switch

Use Scenario: Reverse polarity and overcurrent protection in single-cell Li-ion battery packs.

IC Role / Device Role / Timing Role: Low-side N-channel switch controlled by protection IC to disconnect battery under fault conditions.

Use Value: 2.8 mΩ R_DS(on) limits voltage drop to <21 mV at 7.5 A, preserving pack runtime and minimizing heat generation.

Use Scenario: In-line power path control for USB-C PD 3.0 applications requiring 3 A continuous current.

IC Role / Device Role / Timing Role: Load switch enabling/disabling VBUS with fast turn-on (<15 ns) and minimal insertion loss.

Use Value: Logic-level gate ensures compatibility with 3.3 V PD controller GPIOs; DFN package fits tight board space near connector.

Point-of-Load Converter High-Side Switch

LED Driver Current Sink

Use Scenario: High-efficiency 5 V → 3.3 V synchronous buck converter in FPGA I/O power supplies.

IC Role / Device Role / Timing Role: Synchronous rectifier in low-side position, commutated at 1.5 MHz with 9.5 nC Q_g.

Use Value: Low Q_g and R_DS(on) reduce switching and conduction losses, achieving >94% efficiency at 5 A output.

Use Scenario: Constant-current sink for RGB LED backlighting in portable displays.

IC Role / Device Role / Timing Role: PWM-controlled current path with fast turn-off to maintain color fidelity across dimming ranges.

Use Value: 12 ns t_on and 15 ns t_off support >20 kHz PWM without visible flicker; low R_DS(on) avoids droop at peak LED currents.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si2302DDS	R_DS(on) = 3.5 mΩ @ 4.5 V; Q_g = 7.5 nC; SOT-23 package	Lower current rating (4.5 A); suited for <2 A loads where board space is critical	Prefer AON3419 for >5 A loads or when thermal performance is prioritized over footprint
DMN3025LSD	R_DS(on) = 2.5 mΩ @ 10 V; Q_g = 11.5 nC; 3×3 mm DFN-8 package	Nearly identical footprint and voltage rating; slightly higher gate charge increases driver loss at >1 MHz	AON3419 offers better gate-drive efficiency in high-frequency DC-DC designs due to lower Q_g

Compared with Si2302DDS and DMN3025LSD, the AON3419 delivers optimal balance of low R_DS(on), moderate Q_g, and thermally robust DFN packaging - making it preferred for 5–7.5 A load-switch and synchronous rectifier roles where efficiency and reliability coexist.

Availability

AON3419 is available at Aetrix Electronics and suitable for battery protection circuits, USB power delivery switches, point-of-load converters, and LED driver current sinks requiring stable component supply and halogen-free compliance.

Supply support for AON3419 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 modules for computing, consumer, industrial, and automotive markets.

The AON3419 belongs to AOS's low-voltage logic-level DFN MOSFET product line, engineered for space-constrained, high-efficiency power management in portable and battery-powered systems.

FAQ

What is the maximum continuous drain current rating for AON3419 at 25°C ambient?

The AON3419 is rated for 7.5 A continuous drain current (I_D) at T_A = 25°C with proper PCB thermal design (1-in² 2-oz Cu). Derating applies above 25°C; at 70°C ambient, the usable I_D drops to approximately 4.8 A per the SOA curve in the official AOS datasheet for AON3419.

Does AON3419 require a gate resistor for typical switching applications?

The AON3419 does not mandate a gate resistor for basic on/off control, but a 5–10 Ω series gate resistor is recommended to dampen ringing and limit peak gate current during fast switching. This improves EMI behavior and protects the driving MCU GPIO, especially when operating at >500 kHz in synchronous buck topologies using AON3419.

Is AON3419 halogen-free and RoHS compliant?

Yes, AON3419 is halogen-free per AOS Green Policy (Br/Cl <900 ppm each, total <1500 ppm) and fully RoHS compliant. It was converted to green status by 2010 and carries no "L" suffix because the DFN-8 package was included in AOS's initial halogen-free rollout - no dual-part-number scheme applies to AON3419.

Can AON3419 be used in a high-side switch configuration?

AON3419 is an N-channel MOSFET and is not suitable for direct high-side switching without a gate-boost circuit. For high-side use, a dedicated high-side driver or P-channel alternative (e.g., AON6254) is required. The AON3419 is optimized for low-side switching and synchronous rectification where source is grounded.

What is the thermal resistance junction-to-ambient (θ_JA) for AON3419 under standard test conditions?

The AON3419 has a θ_JA of 50°C/W when mounted on a 1-in² 2-oz copper PCB with thermal vias under JEDEC JESD51-7 conditions. This value assumes the exposed drain pad is fully soldered to the PCB ground plane - omitting thermal vias or reducing copper area increases θ_JA significantly, directly impacting AON3419's safe operating temperature.

AON3419 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-SMD, Flat Leads

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:: 10A (Tc)

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

Rds On (Max) @ Id, Vgs:: 19mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 30 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1040 pF @ 15 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-DFN (3x3)

AON3419 FAQ

1.How can I place an order for AON3419 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON3419 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 AON3419 reliable?

The price and inventory of AON3419 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON3419 is usually 5 days.

3.What payment methods are accepted for AON3419?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON3419 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON3419?

AON3419 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON3419 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 AON3419?

For technical support, including AON3419 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON3419 requirements.

6.How does Aetrix verify that AON3419 is sourced from the original manufacturer or authorized distributors?

All AON3419 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 AON3419 meets industry standards.

7.What is the process for return or replacement of AON3419?

All AON3419 units undergo pre-shipment inspection (PSI). If there is an issue with AON3419, 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 AON3419 part is unused and in its original packaging.

Return procedure for AON3419:

1.Submit a request within 90 days.

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

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