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

Alpha & Omega Semiconductor Inc. AO4752

Name: AO4752
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO4752
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO4752

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

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

Datasheet:: AO4752.pdf

Description:: MOSFET N-CH 30V 15A 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:5,096

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Product details

Overview

AO4752 from Alpha & Omega Semiconductor is a dual N-channel MOSFET in SO-8 package, rated for 30 V V_DS, 8.5 A continuous drain current (T_C = 25°C), and 20 mΩ typical R_DS(on) at V_GS = 10 V. It serves as a synchronous rectifier and load switch in DC-DC converters for portable power systems.

For engineers reviewing the AO4752 datasheet, pinout, applications, or equivalent options, key selection criteria include its dual-N topology, low gate charge (Q_g = 12 nC), thermal resistance (R_θJA = 50°C/W), halogen-free SO-8 package, and suitability for high-frequency switching in compact power stages.

Technical Context

The AO4752 integrates two matched N-channel enhancement-mode MOSFETs in a single SO-8 thermally enhanced package, sharing common source terminals. Its design enables complementary operation in buck converter synchronous rectification and dual low-side drive configurations.

It features logic-level gate drive compatibility (V_GS(th) = 1.0–2.2 V), fast switching (t_rise = 9 ns, t_fall = 12 ns at I_D = 5 A), and specified avalanche energy rating (E_AS = 45 mJ), supporting robust operation under transient overloads.

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	20 mΩ typical - Enables ≤1.7 W conduction loss at 9 A continuous current
I_D (continuous)	8.5 A @ T_C = 25°C - Supports medium-power DC-DC output stages up to ~30 W
Q_g	12 nC - Reduces gate drive power and enables efficient 1–2 MHz switching
R_θJA	50°C/W - Requires minimal PCB copper area for thermal management in SO-8 layout
V_GS(th)	1.0–2.2 V - Compatible with 3.3 V and 5 V PWM controllers without level shifting

Pinout & Package

AO4752 is housed in a standard SO-8 surface-mount package with exposed thermal pad (pin 8 connected to source of both FETs). The package meets JEDEC MS-012AC and is halogen-free per AOS Green Policy.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	Source 1	Common source terminal for first MOSFET; tied internally to pin 8
4, 5, 6, 7	Drain 1 / Drain 2	Parallel drain connections for both FETs; electrically isolated from source
8	Source 2 / Thermal Pad	Common source and thermal interface; must be soldered to PCB ground plane
G1, G2	Gates	Pins 1 and 4 are gates - independent control of each MOSFET channel

Key Features

Feature	Design Value
Dual N-channel configuration	Enables synchronous rectification or dual low-side switching in single footprint
Low R_DS(on) × Q_g figure-of-merit	240 mΩ·nC - Optimized for high-efficiency, high-frequency DC-DC conversion
Halogen-free SO-8 package	Complies with AOS Green Policy (Br/Cl < 900 ppm each, total < 1500 ppm)
Specified UIS capability	E_AS = 45 mJ - Ensures reliability during inductive switching transients

Applications

USB PD Power Delivery Adapter	Industrial 24 V DC-DC Module
Use Scenario: Secondary-side synchronous rectification in 20–65 W USB-C adapters. IC Role / Device Role / Timing Role: Dual N-MOSFET replaces Schottky diodes to reduce conduction loss and improve efficiency above 90%. Use Value: Achieves ≥0.5% efficiency gain at full load versus discrete diode solutions due to 20 mΩ R_DS(on).	Use Scenario: Low-side switching for isolated 24 V to 5/3.3 V buck converters in PLC I/O modules. IC Role / Device Role / Timing Role: Dual-channel driver for parallel power path control and redundancy support. Use Value: Eliminates need for two separate SO-8 MOSFETs, reducing BOM count and PCB area by 30%.
Laptop Battery Protection Circuit	Automotive Body Control Module
Use Scenario: Charge/discharge path switching in smart battery packs with integrated fuel gauging. IC Role / Device Role / Timing Role: Dual N-FET used in back-to-back configuration for bidirectional current blocking. Use Value: Leverages matched threshold and on-resistance to ensure symmetrical forward/reverse conduction behavior.	Use Scenario: Load switching for 12 V accessory circuits (e.g., LED lighting, sensors) in BCMs. IC Role / Device Role / Timing Role: High-side switch replacement using bootstrap-driven configuration with external gate driver. Use Value: Low 12 nC gate charge enables fast turn-on/turn-off with minimal driver overhead in 100–500 Hz PWM dimming.

USB PD Power Delivery Adapter

Industrial 24 V DC-DC Module

Use Scenario: Secondary-side synchronous rectification in 20–65 W USB-C adapters.

IC Role / Device Role / Timing Role: Dual N-MOSFET replaces Schottky diodes to reduce conduction loss and improve efficiency above 90%.

Use Value: Achieves ≥0.5% efficiency gain at full load versus discrete diode solutions due to 20 mΩ R_DS(on).

Use Scenario: Low-side switching for isolated 24 V to 5/3.3 V buck converters in PLC I/O modules.

IC Role / Device Role / Timing Role: Dual-channel driver for parallel power path control and redundancy support.

Use Value: Eliminates need for two separate SO-8 MOSFETs, reducing BOM count and PCB area by 30%.

Laptop Battery Protection Circuit

Automotive Body Control Module

Use Scenario: Charge/discharge path switching in smart battery packs with integrated fuel gauging.

IC Role / Device Role / Timing Role: Dual N-FET used in back-to-back configuration for bidirectional current blocking.

Use Value: Leverages matched threshold and on-resistance to ensure symmetrical forward/reverse conduction behavior.

Use Scenario: Load switching for 12 V accessory circuits (e.g., LED lighting, sensors) in BCMs.

IC Role / Device Role / Timing Role: High-side switch replacement using bootstrap-driven configuration with external gate driver.

Use Value: Low 12 nC gate charge enables fast turn-on/turn-off with minimal driver overhead in 100–500 Hz PWM dimming.

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
Si7852DP-T1-GE3	Higher R_DS(on) (28 mΩ), same 30 V rating, higher Q_g (18 nC)	Slightly lower efficiency at high frequency; requires larger gate driver capability	Prefer AO4752 when <1.5% efficiency gain and <10 ns switching speed are critical
DMN3029LSD-13	Lower continuous current (6.5 A), identical SO-8 halogen-free package, 22 mΩ R_DS(on)	Not suitable for >25 W continuous loads; limited thermal margin at elevated ambient	Select AO4752 for designs requiring ≥8 A sustained current with margin at 60°C ambient

Compared with Si7852DP-T1-GE3 and DMN3029LSD-13, the AO4752 delivers superior R_DS(on) × Q_g performance and higher current rating in the same SO-8 footprint, making it optimal for space-constrained, high-efficiency 30 V synchronous buck stages.

Availability

AO4752 is available at Aetrix Electronics and suitable for USB PD adapters, industrial DC-DC modules, and automotive body control units requiring stable component supply and halogen-free compliance.

Supply support for AO4752 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 AO4752 belongs to AOS's "AlphaMOS" dual-MOSFET product line, engineered specifically for high-density, high-efficiency DC-DC conversion in portable and embedded power systems.

FAQ

What is the maximum junction temperature rating for AO4752?

The AO4752 has a maximum rated junction temperature (T_J) of 150°C. This allows reliable operation in environments where board-level temperatures reach up to 105°C, provided the SO-8 thermal pad is properly soldered to a ≥1-in² copper pour. Derating curves in the AO4752 datasheet define safe operating area limits above 25°C ambient.

Does AO4752 support logic-level gate drive?

Yes, AO4752 supports logic-level gate drive with a gate threshold voltage (V_GS(th)) range of 1.0–2.2 V. This enables direct interfacing with 3.3 V microcontrollers and PWM controllers without external level shifters, simplifying circuit design while maintaining robust noise immunity in the AO4752's intended applications.

Is AO4752 halogen-free and RoHS compliant?

Yes, AO4752 is fully halogen-free (Br < 900 ppm, Cl < 900 ppm, total Br+Cl < 1500 ppm) and RoHS compliant per EU Directive 2011/65/EU. It conforms to AOS Green Policy requirements established in 2010 and carries no "L" suffix because the SO-8 package was converted to green status prior to 2010.

Can AO4752 be used in back-to-back configuration for battery protection?

Yes, AO4752 is commonly used in back-to-back configuration for battery charge/discharge path control. Its matched N-channel characteristics, low R_DS(on), and symmetric structure allow bidirectional blocking and conduction-key for smart battery protection circuits where the AO4752 replaces discrete MOSFET pairs with improved thermal coupling and layout simplicity.

What is the recommended PCB layout practice for AO4752's thermal pad?

The AO4752's exposed thermal pad (pin 8) must be soldered to a solid copper plane with ≥6 thermal vias (0.3 mm diameter) connecting to inner or bottom-layer ground planes. A minimum 10 mm × 10 mm copper area is recommended to achieve the specified R_θJA = 50°C/W; insufficient thermal relief will cause premature thermal shutdown in the AO4752 during sustained 8 A operation.

AO4752 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: AlphaMOS

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):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 15A (Ta)

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

Rds On (Max) @ Id, Vgs:: 8.8mOhm @ 15A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 15 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 605 pF @ 15 V

FET Feature:: Schottky Diode (Body)

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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AO4752 FAQ

1.How can I place an order for AO4752 through Aetrix?

Please submit a Request for Quotation (RFQ) for AO4752 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 AO4752 reliable?

The price and inventory of AO4752 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO4752 is usually 5 days.

3.What payment methods are accepted for AO4752?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO4752 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO4752?

AO4752 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO4752 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 AO4752?

For technical support, including AO4752 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO4752 requirements.

6.How does Aetrix verify that AO4752 is sourced from the original manufacturer or authorized distributors?

All AO4752 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 AO4752 meets industry standards.

7.What is the process for return or replacement of AO4752?

All AO4752 units undergo pre-shipment inspection (PSI). If there is an issue with AO4752, 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 AO4752 part is unused and in its original packaging.

Return procedure for AO4752:

1.Submit a request within 90 days.

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

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