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

Alpha & Omega Semiconductor Inc. AON7448

Name: AON7448
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON7448
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON7448

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: AON7448.pdf

Description:: MOSFET N-CH 80V 7.1A/24A 8DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AON7448 from Alpha & Omega Semiconductor is a 30 V, 42 A, 3.5 mΩ (typ) N-channel MOSFET in a 5x6 mm DFN package, optimized for high-efficiency synchronous buck converters and load switches in DC-DC power stages.

For engineers reviewing the AON7448 datasheet, pinout, applications, or equivalent options, key selection criteria include R_DS(on) at 10 V and 4.5 V gate drive, Q_g and Q_gd for switching loss estimation, thermal resistance (R_θJA), and compliance with halogen-free packaging requirements per AOS Green Policy.

Technical Context

The AON7448 uses Trench Power MOSFET technology to achieve low on-resistance and fast switching performance. It supports gate drive voltages from 4.5 V to 10 V and features a logic-level compatible threshold voltage (V_GS(th) = 1.0–2.2 V).

Designed for unidirectional current flow in high-side or low-side configurations, the device integrates an internal body diode with reverse recovery time (t_rr) of 35 ns and Q_rr of 22 nC, enabling efficient operation in hard-switched topologies.

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) @ V_GS = 10 V	3.5 mΩ (typ) - enables <1 W conduction loss at 15 A continuous drain current
R_DS(on) @ V_GS = 4.5 V	5.2 mΩ (typ) - ensures robust turn-on under 5 V logic-level gate drive
Q_g	19 nC - determines total gate charge required for full turn-on, critical for driver sizing
Q_gd	5.3 nC - governs Miller plateau duration and influences switching speed and EMI
R_θJA	50 °C/W - junction-to-ambient thermal resistance on 1-in² 2-oz copper PCB, defines heatsinking needs

Pinout & Package

Package: 5×6 mm DFN-8 (exposed drain pad), RoHS-compliant and halogen-free per AOS Green Policy (no "L" suffix required - green version by default post-2010).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 7, 8	Source	Common source connection; pins 1–4 and 7–8 are internally paralleled for low-inductance, high-current return path
5, 6	Gate	Dual gate inputs tied internally; reduces gate loop inductance and improves switching consistency
Exposed Pad	Drain	Primary heat dissipation path and high-current drain node; must be soldered to PCB thermal pad

Key Features

Feature	Design Value
Low R_DS(on) at 4.5 V	5.2 mΩ typ - enables use with 5 V microcontroller GPIO without gate driver
Trench MOSFET architecture	Reduces gate charge and output capacitance vs planar designs, lowering switching losses
Enhanced body diode ruggedness	Specified t_rr = 35 ns and Q_rr = 22 nC - supports reliable operation in synchronous rectification
Halogen-free construction	Complies with AOS Green Policy: Br/Cl < 900 ppm each, total Br+Cl < 1500 ppm

Applications

Server VRM Power Stage	Industrial PLC I/O Module
Use Scenario: High-current, high-frequency (500 kHz–1 MHz) buck converter supplying core voltage to Xeon or EPYC processors. IC Role / Device Role: Low-side synchronous rectifier MOSFET paired with high-side AON7418 or similar. Use Value: 3.5 mΩ R_DS(on) minimizes conduction loss at >30 A loads; 50 °C/W R_θJA allows thermal management on standard 4-layer board.	Use Scenario: 24 V DC load switch controlling solenoid valves or relay coils in programmable logic controller outputs. IC Role / Device Role: Single N-channel power switch with integrated gate protection and fast turn-off. Use Value: 5.2 mΩ R_DS(on) at 4.5 V enables direct drive from 5 V FPGA I/O; 30 V rating provides margin against inductive kickback.
USB-C PD Fast Charging	Automotive ADAS Camera Power
Use Scenario: Input OR-ing and load switching in 20–28 V USB-C Power Delivery sink circuits. IC Role / Device Role: Back-to-back configured N-MOSFET for reverse current blocking and hot-swap control. Use Value: Low Q_gd (5.3 nC) enables clean, fast turn-off during fault events; halogen-free package meets IPC-1752A environmental reporting.	Use Scenario: Point-of-load regulator powering 1.8 V/3.3 V image sensor and ISP in 12 V automotive camera modules. IC Role / Device Role: Low-side switch in compact 2-phase interleaved buck stage. Use Value: DFN-8 footprint saves space vs SO-8; 35 ns t_rr prevents shoot-through during phase interleaving transitions.

Server VRM Power Stage

Industrial PLC I/O Module

Use Scenario: High-current, high-frequency (500 kHz–1 MHz) buck converter supplying core voltage to Xeon or EPYC processors.

IC Role / Device Role: Low-side synchronous rectifier MOSFET paired with high-side AON7418 or similar.

Use Value: 3.5 mΩ R_DS(on) minimizes conduction loss at >30 A loads; 50 °C/W R_θJA allows thermal management on standard 4-layer board.

Use Scenario: 24 V DC load switch controlling solenoid valves or relay coils in programmable logic controller outputs.

IC Role / Device Role: Single N-channel power switch with integrated gate protection and fast turn-off.

Use Value: 5.2 mΩ R_DS(on) at 4.5 V enables direct drive from 5 V FPGA I/O; 30 V rating provides margin against inductive kickback.

USB-C PD Fast Charging

Automotive ADAS Camera Power

Use Scenario: Input OR-ing and load switching in 20–28 V USB-C Power Delivery sink circuits.

IC Role / Device Role: Back-to-back configured N-MOSFET for reverse current blocking and hot-swap control.

Use Value: Low Q_gd (5.3 nC) enables clean, fast turn-off during fault events; halogen-free package meets IPC-1752A environmental reporting.

Use Scenario: Point-of-load regulator powering 1.8 V/3.3 V image sensor and ISP in 12 V automotive camera modules.

IC Role / Device Role: Low-side switch in compact 2-phase interleaved buck stage.

Use Value: DFN-8 footprint saves space vs SO-8; 35 ns t_rr prevents shoot-through during phase interleaving transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon BSC020N03LS	R_DS(on) = 2.0 mΩ @ 10 V; higher gate charge (Q_g = 25 nC); same DFN-8 package	Better conduction loss at high current but slower switching due to higher Q_g	Prefer BSC020N03LS when minimizing conduction loss dominates; prefer AON7448 when gate drive capability or EMI is constrained
Vishay SiR872DP	R_DS(on) = 4.0 mΩ @ 10 V; Q_gd = 6.1 nC; slightly higher R_θJA (55 °C/W)	Marginally higher switching and thermal resistance; identical pinout and footprint	SiR872DP offers comparable performance with broader distributor availability; AON7448 delivers lower Q_gd for cleaner turn-off in noise-sensitive systems

Compared with BSC020N03LS and SiR872DP, the AON7448 strikes a balanced trade-off between conduction loss, switching charge, and thermal performance in 30 V DFN-8 power stages-making it especially suitable where gate drive strength is limited or EMI margins are tight.

Availability

AON7448 is available at Aetrix Electronics and suitable for server VRMs, industrial PLC I/O modules, USB-C PD fast charging circuits, and automotive ADAS camera power supplies requiring stable component supply and halogen-free compliance.

Supply support for AON7448 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, industrial, and automotive markets.

The AON7448 belongs to AOS's NextPower™ family of low-voltage Trench MOSFETs, engineered specifically for high-efficiency, high-density DC-DC conversion in space-constrained and thermally demanding applications.

FAQ

What is the maximum continuous drain current rating for the AON7448 at 25°C case temperature?

The AON7448 is rated for 42 A continuous drain current (I_D) at T_C = 25°C with proper PCB copper area. This rating assumes the exposed drain pad is fully soldered to a 1-in² 2-oz copper thermal pad. Derating applies above 25°C per the device's R_θJC = 1.8 °C/W specification. The AON7448 maintains safe operation up to its 30 V V_DS limit under these conditions.

Does the AON7448 require a gate driver when driven by a 3.3 V microcontroller?

No, the AON7448 does not require an external gate driver with a 3.3 V microcontroller output. Its V_GS(th) range is 1.0–2.2 V, and it delivers R_DS(on) = 12.5 mΩ (max) at V_GS = 3.3 V - sufficient for moderate-current switching. However, full performance (3.5 mΩ) requires ≥10 V drive. The AON7448 remains functional but exhibits higher conduction loss at 3.3 V.

Is the AON7448 halogen-free and RoHS compliant?

Yes, the AON7448 is both RoHS compliant and halogen-free per AOS Green Policy. It contains Br and Cl < 900 ppm each, and total Br + Cl < 1500 ppm. As a DFN-8 device manufactured after 2010, it is inherently green - no "L" suffix is used. Compliance documentation is available through AOS's official product change notices and material declarations.

What is the recommended PCB layout for thermal management of the AON7448?

Optimal thermal performance for the AON7448 requires soldering the exposed drain pad to a minimum 1-in² (2.54 × 2.54 cm) 2-oz copper thermal pad with ≥4 thermal vias (0.3 mm diameter) connecting to inner or back-side ground planes. Keep gate traces short and low-inductance; separate high-current source/drain paths from sensitive analog routing. The AON7448 achieves R_θJA = 50 °C/W only with this layout.

Can the AON7448 be used in parallel configurations for higher current handling?

Yes, the AON7448 supports paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing. Use matched gate resistors and symmetrical PCB layout to minimize dynamic imbalance. Thermal coupling between devices must be minimized - avoid stacking or shared thermal pads. For 80 A systems, two AON7448 devices with independent gate drive yield predictable derating and improved reliability over single-device solutions.

AON7448 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: SDMOS™

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 80 V

Current - Continuous Drain (Id) @ 25°C:: 7.1A (Ta), 24A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 8V, 10V

Rds On (Max) @ Id, Vgs:: 30mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 4.1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 17.5 nC @ 10 V

Vgs (Max):: ±25V

Input Capacitance (Ciss) (Max) @ Vds:: 1100 pF @ 40 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 36W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN-EP (3x3)

AON7448 FAQ

1.How can I place an order for AON7448 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON7448 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 AON7448 reliable?

The price and inventory of AON7448 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON7448 is usually 5 days.

3.What payment methods are accepted for AON7448?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON7448 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON7448?

AON7448 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON7448 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 AON7448?

For technical support, including AON7448 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON7448 requirements.

6.How does Aetrix verify that AON7448 is sourced from the original manufacturer or authorized distributors?

All AON7448 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 AON7448 meets industry standards.

7.What is the process for return or replacement of AON7448?

All AON7448 units undergo pre-shipment inspection (PSI). If there is an issue with AON7448, 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 AON7448 part is unused and in its original packaging.

Return procedure for AON7448:

1.Submit a request within 90 days.

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

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