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AOZ2263VQI-02
Alpha & Omega Semiconductor Inc.
IC REG BUCK PROG 4V 12A 22QFN
2280 Pcs New Original In Stock
Buck Switching Regulator IC Positive Programmable 4V 1 Output 12A 22-PowerVFQFN
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (225 Ratings)
AOZ2263VQI-02
Product Overview
11222708
DiGi Electronics Part Number
AOZ2263VQI-02-DGManufacturer
Alpha & Omega Semiconductor Inc.
AOZ2263VQI-02
Description
IC REG BUCK PROG 4V 12A 22QFNInventory
2280 Pcs New Original In Stock
Buck Switching Regulator IC Positive Programmable 4V 1 Output 12A 22-PowerVFQFN
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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AOZ2263VQI-02 Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Tape & Reel (TR)
Series
EZBuck™
Product Status
Active
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Programmable
Number of Outputs
1
Voltage - Input (Min)
4V
Voltage - Input (Max)
28V
Voltage - Output (Min/Fixed)
4V
Voltage - Output (Max)
1.05V
Current - Output
12A
Frequency - Switching
600kHz
Synchronous Rectifier
Yes
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
22-PowerVFQFN
Supplier Device Package
22-QFN (4x4)
Datasheet & Documents
HTML Datasheet
AOZ2263VQI-02-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
REACH Status
REACH Unaffected
Additional Information
Other Names
785-AOZ2263VQI-02TR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
DiGi Electronics的物流安排非常周全，從未遇過延遲，值得信賴。
Dec 02, 2025
Ravi de mon achat ! La qualité est supérieure et la livraison a été très rapide.
Dec 02, 2025
Livraisons toujours ponctuelles, leur logistique est vraiment bien rodée.
Dec 02, 2025
Der Kundenservice ist immer hilfsbereit und gibt wertvolle Unterstützung nach dem Kauf.
Dec 02, 2025
DiGi Electronics offers unbeatable prices that make top-quality tech accessible to everyone.
Dec 02, 2025
The shipment was well-packaged, and the product's robustness is evident.
Dec 02, 2025
The packaging process is swift and secure, ensuring my products are well-protected and arrive without damage.
Dec 02, 2025
The after-sales support from DiGi Electronics is exceptional; they always respond promptly and effectively.
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Frequently Asked Questions (FAQ)
Can the AOZ2263VQI-02 be used as a drop-in replacement for the TI TPS54360 in a 12V to 3.3V, 8A industrial power supply design, and what layout or compensation adjustments are needed to avoid instability?
The AOZ2263VQI-02 is not a direct drop-in replacement for the TPS54360 due to differences in control loop architecture, pinout, and compensation requirements. While both are 600kHz synchronous buck regulators, the AOZ2263VQI-02 uses a voltage-mode control with internal compensation optimized for ceramic output capacitors, whereas the TPS54360 employs a current-mode control requiring external compensation. To ensure stability, you must re-evaluate the output filter design—specifically the LC values and ESR—and verify phase margin via transient load testing. Additionally, the 22-QFN package of the AOZ2263VQI-02 has a different thermal pad and pin arrangement, so PCB layout modifications are required. Always validate with a prototype under worst-case load and line conditions to mitigate oscillation risk.
What are the critical thermal design considerations when operating the AOZ2263VQI-02 at 12A output current in a compact enclosure with limited airflow, and how does junction temperature affect long-term reliability?
At 12A output, the AOZ2263VQI-02 can dissipate over 2W under high input voltage (e.g., 24V to 1.05V), making thermal management critical. The 22-QFN (4x4) package relies heavily on the PCB’s thermal vias and copper pour for heat dissipation. Without adequate thermal relief—such as a 2-layer board with minimal copper—the junction temperature can exceed 125°C even at 85°C ambient, accelerating electromigration and reducing MTBF. Use a 4-layer board with internal ground planes, populate the exposed pad with ≥9 thermal vias (8 mil drill, filled), and maintain a minimum 200 mm² of 2 oz copper connected to the thermal pad. Monitor TJ using the RθJA ≈ 35°C/W (on JEDEC standard board); active cooling or derating above 70°C ambient is recommended for mission-critical applications.
How does the AOZ2263VQI-02 compare to the MPS MPQ4572GH in terms of efficiency, transient response, and EMI performance for a 5V to 1.2V FPGA core rail application with 10A dynamic loads?
The AOZ2263VQI-02 offers superior efficiency above 8A due to its lower RDS(ON) MOSFETs (typ. 18mΩ high-side), achieving ~93% at 5V→1.2V/10A, compared to the MPQ4572GH’s ~90% under the same conditions. However, the MPQ4572GH uses a proprietary hysteretic mode with faster transient response (±3% deviation vs. ±5% for the AOZ2263VQI-02 on 50%-100% load steps), making it better suited for FPGA rails with rapid current slew rates. EMI-wise, the AOZ2263VQI-02’s fixed 600kHz switching frequency simplifies filtering but may interfere with sensitive analog circuits; the MPQ4572GH supports frequency dithering. For FPGA applications, if transient fidelity is paramount, consider the MPQ4572GH; if efficiency and cost are priorities, the AOZ2263VQI-02 is viable with proper output capacitance (≥470μF ceramic + bulk) and snubber tuning.
Is it safe to operate the AOZ2263VQI-02 continuously at 28V input and 12A output in an automotive environment where load dump transients up to 40V may occur, and what protection circuitry is recommended?
Continuous operation at 28V input is within the AOZ2263VQI-02’s absolute maximum rating (max 28V), but automotive load dumps (e.g., ISO 7637-2 pulses up to 40V) exceed this limit and risk catastrophic failure. The IC lacks integrated overvoltage protection, so external clamping is essential. Implement a TVS diode (e.g., SMAJ33A, 33V breakdown) close to the VIN pin, combined with a 36V-rated input capacitor (e.g., tantalum polymer or high-reliability ceramic). Additionally, use a series Schottky diode or MOSFET-based reverse-polarity protection to prevent damage during miswiring. Always include an input fuse rated for surge currents. Without these protections, repeated transient exposure will degrade the internal gate oxide, leading to premature failure—especially problematic in safety-critical automotive systems.
When replacing a failed AOZ2263VQI-02 in a high-volume consumer product, how can I ensure long-term supply chain stability and avoid counterfeit parts, given that Alpha & Omega Semiconductor has limited distribution channels compared to TI or Analog Devices?
To mitigate supply chain and counterfeiting risks when sourcing the AOZ2263VQI-02, procure only through authorized distributors like Digi-Key, Mouser, or Avnet, which provide full traceability and anti-counterfeit verification. Avoid brokers or spot-market vendors, especially for tape-and-reel quantities. Cross-reference the date code and lot number with Alpha & Omega’s official database, and perform incoming inspection including X-ray and electrical testing (e.g., verify switching frequency and enable threshold). For long-term stability, consider qualifying a second-source alternative such as the Richtek RT6236A (pin-compatible, similar performance) during design revisions. Maintain a safety stock of ≥6 months’ demand and engage with Alpha & Omega’s FAE team to assess lifecycle status—since AOS has a history of product transitions, proactive communication prevents last-time-buy surprises.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AOZ2263VQI-02 CAD Models
Alpha & Omega Semiconductor Inc. AOZ2263VQI-02 PCB symbols & footprints
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