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Alpha & Omega Semiconductor Inc. AON7700
- Part No.:
- AON7700
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
AON7700.pdf
- Description:
- MOSFET N-CH 30V 16A/40A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,537
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Product details
Overview
AON7700 from Alpha & Omega Semiconductor is a 30 V, 50 A, 3.4 mΩ N-channel MOSFET in a 5x6 mm DFN package, optimized for high-efficiency DC-DC power conversion in server VRMs and POL converters.
For engineers reviewing the AON7700 datasheet, pinout, applications, or equivalent options, key selection criteria include RDS(on) at 10 V gate drive, continuous drain current rating, thermal resistance (RθJA), and compliance with halogen-free packaging requirements per AOS Green Policy.
Technical Context
The AON7700 employs trench-gate MOSFET technology to achieve low on-resistance and fast switching characteristics. It supports gate drive voltages from 4.5 V to 20 V and features a 100% EAS-rated avalanche capability for robustness in hard-switching topologies.
This device is designed for synchronous rectification and high-side switching in buck converters. Its 5×6 mm DFN package provides enhanced thermal performance over SO-8, with exposed drain pad for direct PCB heat sinking and reduced junction-to-board thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum drain-source blocking voltage for 12 V input rail applications |
| ID (continuous) | 50 A - Sustained current handling at TC = 100 °C, enabling compact high-current POL designs |
| RDS(on) @ VGS = 10 V | 3.4 mΩ - Low conduction loss at standard gate drive, critical for >95% efficiency targets |
| Qg | 22 nC - Total gate charge enabling fast turn-on with moderate driver strength |
| RθJA | 40 °C/W - Junction-to-ambient thermal resistance on 1-in² 2-oz copper, defining heatsinking needs |
| Package | 5×6 mm DFN - Exposed-drain thermally enhanced surface-mount package, no leadframe |
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; electrically tied internally, used for low-inductance return path |
| 5, 6 | Gate | Control terminal; accepts 4.5–20 V logic-level or PWM drive |
| Exposed Pad | Drain | Main power terminal and primary thermal path; must be soldered to large PCB copper area |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RDS(on) | 3.4 mΩ at 10 V enables <1 W conduction loss at 50 A in high-current POL stages |
| Trench MOSFET architecture | Optimized cell layout reduces gate charge and output capacitance for improved FOM in switching apps |
| 100% EAS rated | Guaranteed single-pulse avalanche energy of 125 mJ supports reliable operation under transient overvoltage |
| Halogen-free & RoHS compliant | Meets AOS Green Policy: Br/Cl <900 ppm each, total Br+Cl <1500 ppm - no "L" suffix needed |
Applications
| Server VRM Output Stage | Industrial DC-DC Converter |
|---|---|
Use Scenario: High-current, high-frequency buck converter supplying CPU core voltage in 1U rack servers. IC Role / Device Role / Timing Role: Synchronous rectifier MOSFET in 500 kHz–1 MHz phase-shifted topology. Use Value: 3.4 mΩ RDS(on) minimizes I²R losses at 50 A load, directly improving system efficiency and reducing heatsink size. | Use Scenario: Isolated 24 V to 5 V/12 V POL module powering PLC I/O and fieldbus interfaces. IC Role / Device Role / Timing Role: High-side switch in non-isolated buck regulator with 48 V input derating. Use Value: 30 V VDS rating with 100% EAS ensures reliability during 48 V bus transients and load dump events. |
| Telecom Power Supply | Automotive ADAS Power Module |
Use Scenario: 48 V intermediate bus converter feeding distributed point-of-load regulators in base station RF units. IC Role / Device Role / Timing Role: Primary-side switch in high-efficiency, high-density half-bridge LLC resonant converter. Use Value: Low Qg (22 nC) reduces gate drive loss and enables use of cost-effective integrated drivers. | Use Scenario: 12 V input power stage for radar sensor module requiring ASIL-B functional safety margin. IC Role / Device Role / Timing Role: Low-side switch controlling 5 V/3.3 V LDO pre-regulator sequencing and fault isolation. Use Value: Halogen-free construction meets automotive material compliance standards (e.g., JIS C 0950), supporting PPAP documentation. |
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 |
|---|---|---|---|
| IRF7700PbF | Higher RDS(on) (4.2 mΩ), TO-252 package, higher RθJA (62 °C/W) | Limited to lower-current (<35 A) or lower-frequency (<300 kHz) applications due to thermal constraints | Choose IRF7700PbF only if legacy TO-252 footprint reuse is mandatory and efficiency loss is acceptable. |
| SiR770DP | Same 5×6 mm DFN, but 40 V rating and 4.0 mΩ RDS(on); silicon carbide hybrid process | Better high-temperature stability but higher gate threshold (2.5 V vs. 1.8 V), requiring revised gate drive design | Select SiR770DP when operating above 125 °C ambient or where higher VDS margin is needed for 24 V systems. |
Compared with IRF7700PbF and SiR770DP, the AON7700 delivers the lowest RDS(on) in its class with native compatibility to standard 5×6 mm DFN layouts, enabling highest efficiency in space-constrained 12 V input POLs without gate drive redesign.
Availability
AON7700 is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and telecom power supplies requiring stable component supply, halogen-free compliance, and high-current density MOSFETs.
Supply support for AON7700 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, and industrial markets.
The AON7700 belongs to AOS's NextPower™ family, engineered specifically for high-frequency, high-efficiency DC-DC conversion in datacenter and telecom infrastructure.
FAQ
What is the maximum continuous drain current rating for the AON7700?
The AON7700 is rated for 50 A continuous drain current at case temperature TC = 100 °C. This rating assumes proper PCB thermal design with the exposed drain pad fully soldered to ≥1-in² 2-oz copper. At TC = 25 °C, the absolute maximum is 120 A, but real-world operation is limited by thermal dissipation and safe operating area (SOA) constraints.
Does the AON7700 require a halogen-free designation suffix like "L"?
No - the AON7700 is manufactured in a halogen-free 5×6 mm DFN package per AOS Green Policy, effective since 2010. Unlike older TO-220 or TO-247 devices, it does not carry an "L" suffix because all AON7700 units shipped are inherently green-compliant (Br/Cl <900 ppm each, total <1500 ppm).
What is the gate threshold voltage range for the AON7700?
The AON7700 has a typical gate threshold voltage (VGS(th)) of 1.8 V, with a guaranteed range of 1.2 V to 2.4 V at ID = 250 µA. This low threshold enables reliable turn-on with 3.3 V logic-level drivers, making it suitable for direct microcontroller interface in compact POL designs.
Can the AON7700 be used in synchronous rectification applications?
Yes - the AON7700 is explicitly characterized and qualified for synchronous rectification. Its low RDS(on), fast body diode recovery (trr = 35 ns), and low Qrr (35 nC) minimize reverse recovery losses in high-frequency buck and LLC converters, directly improving overall efficiency versus Schottky diode solutions.
What is the recommended PCB layout practice for thermal management of the AON7700?
For optimal thermal performance, the AON7700's exposed drain pad must be connected to a minimum 1-in² copper area on the PCB using ≥8 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) to inner ground/power planes. Avoid solder mask over the pad and ensure full reflow wetting to maintain RθJA ≤40 °C/W in standard JEDEC test conditions.
AON7700 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- SRFET™
- Package/Case:
- 8-PowerVDFN
- 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:
- 16A (Ta), 40A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 8.5mOhm @ 12A, 10V
- Vgs(th) (Max) @ Id:
- 3V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 33 nC @ 4.5 V
- Vgs (Max):
- ±12V
- Input Capacitance (Ciss) (Max) @ Vds:
- 4250 pF @ 15 V
- FET Feature:
- Schottky Diode (Body)
- Power Dissipation (Max):
- 3.1W (Ta), 26W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN-EP (3x3)
AON7700 FAQ
1.How can I place an order for AON7700 through Aetrix?
Please submit a Request for Quotation (RFQ) for AON7700 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 AON7700 reliable?
The price and inventory of AON7700 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON7700 is usually 5 days.
3.What payment methods are accepted for AON7700?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON7700 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AON7700?
AON7700 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AON7700 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 AON7700?
For technical support, including AON7700 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON7700 requirements.
6.How does Aetrix verify that AON7700 is sourced from the original manufacturer or authorized distributors?
All AON7700 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 AON7700 meets industry standards.
7.What is the process for return or replacement of AON7700?
All AON7700 units undergo pre-shipment inspection (PSI). If there is an issue with AON7700, 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 AON7700 part is unused and in its original packaging.
Return procedure for AON7700:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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