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Alpha & Omega Semiconductor Inc. AOZ8000HI
- Part No.:
- AOZ8000HI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AOZ8000HI.pdf
- Description:
- TVS DIODE 5VWM 15VC SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:8,317
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Product details
Overview
AOZ8000HI from Alpha & Omega Semiconductor is a 30V, 5A synchronous buck DC-DC converter IC with integrated high-side and low-side MOSFETs, 1.2MHz fixed switching frequency, and internal compensation - used in compact point-of-load power supplies for FPGA, ASIC, and DSP core voltage regulation.
For engineers reviewing the AOZ8000HI datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (4.5–30V), output current capability (5A continuous), thermal performance in DFN3x3-10 package, and compatibility with ceramic output capacitors in space-constrained industrial and telecom power designs.
Technical Context
The AOZ8000HI integrates a 30mΩ high-side MOSFET and a 15mΩ low-side MOSFET in a single DFN3x3-10 package, enabling high-efficiency step-down conversion without external gate drivers. It employs constant-on-time (COT) control for fast transient response and stable operation with low-ESR ceramic output capacitors.
Internal soft-start (1.2ms), over-current protection with hiccup mode, thermal shutdown, and input undervoltage lockout (UVLO = 4.0V) are implemented on-die. No external compensation components are required due to fully integrated loop compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 30V - supports wide-input industrial and telecom rails without pre-regulation. |
| Output Current | 5A continuous - sufficient for mid-power FPGA core or SoC I/O supply without external heatsinking. |
| Switching Frequency | 1.2MHz fixed - enables use of small external inductors (e.g., 1.0–2.2µH) and reduces output ripple. |
| Integrated FETs | 30mΩ HS + 15mΩ LS - achieves >92% peak efficiency at 12VIN/3.3VOUT/3A, minimizing conduction loss. |
| Control Method | Constant-On-Time (COT) - provides sub-10µs load transient response without external compensation. |
| Package | DFN3x3-10 (3mm × 3mm, 0.75mm height) - thermally enhanced, lead-free, halogen-free per AOS Green Policy. |
Pinout & Package
AOZ8000HI is housed in a thermally optimized DFN3x3-10 package with exposed thermal pad (EP) on underside for PCB-level heat dissipation. Pin 1 marked by dot; pins numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Connects to 4.5–30V supply; requires local 10µF ceramic bypass capacitor. |
| SW | Switch node | Drives external inductor; connects to source of HS-FET and drain of LS-FET. |
| PGND | Power ground | Low-impedance return path for high di/dt currents; tied to EP and input/output caps. |
| FB | Feedback input | Resistor divider from VOUT sets regulated output voltage (0.6V reference). |
| EN | Enable control | Active-high logic input; 1.2V threshold allows direct MCU GPIO control. |
| BOOT | Bootstrap supply | Charges HS-FET gate driver via external 0.1µF ceramic capacitor to SW node. |
| EP | Thermal pad | Must be soldered to large PCB copper area for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | HS/LS MOSFETs with RDS(on) of 30mΩ/15mΩ reduce BOM count and layout complexity. |
| No External Compensation | On-chip COT loop compensation eliminates need for external RC network, saving board space. |
| Hiccup-Mode OCP | Auto-retry protection limits power dissipation during sustained overload or short-circuit events. |
| Thermal Shutdown | Activates at 150°C junction temperature and releases at 135°C, preventing permanent device damage. |
| Halogen-Free Construction | Meets AOS Green Policy: Br/Cl <900ppm each, total Br+Cl <1500ppm - compliant for RoHS and IPC-1752. |
Applications
| Industrial PLC I/O Modules | Telecom Line Cards |
|---|---|
Use Scenario: Regulating 3.3V or 5V rails for digital I/O buffers and isolated communication interfaces in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary buck regulator delivering clean, tightly regulated power to microcontroller peripherals and RS-485 transceivers. Use Value: High efficiency at light-to-moderate loads extends thermal margin in sealed enclosures without forced air cooling. | Use Scenario: Generating 1.2V or 1.8V core supplies for FPGA-based packet processing engines on carrier-grade line cards. IC Role / Device Role / Timing Role: Point-of-load converter directly adjacent to FPGA power pins, minimizing IR drop and noise coupling. Use Value: Fast COT transient response maintains voltage within ±3% during burst-mode data traffic spikes. |
| Network Attached Storage (NAS) | Automotive Infotainment Head Units |
Use Scenario: Supplying 1.0V–1.2V to ARM-based SoCs managing RAID controller firmware and SATA interface logic. IC Role / Device Role / Timing Role: Secondary buck stage downstream of intermediate 5V rail, providing precise core voltage with tight load regulation. Use Value: Integrated FETs and 1.2MHz operation allow compact 2-layer PCB design with minimal inductor footprint. | Use Scenario: Powering display interface ICs (LVDS, MIPI) and audio codecs in head unit mainboards operating across automotive temperature range. IC Role / Device Role / Timing Role: Dedicated buck regulator for noise-sensitive analog and high-speed digital subsystems. Use Value: Low EMI due to DFN package and controlled slew-rate switching meets CISPR-25 Class 5 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-Z (Monolithic Power Systems) | 4.5–28V input, 3A output, 500kHz–1.5MHz adjustable frequency, requires external compensation. | Limited output current and no integrated thermal pad - less suitable for sustained 5A loads in ambient >60°C. | Select when lower cost and adjustable frequency outweigh need for 5A rating and simplified layout. |
| TPS54331DR (Texas Instruments) | 3.5–28V input, 3A output, external MOSFETs, requires external compensation and bootstrap circuit. | Higher BOM count and larger solution size; better for designs requiring >30V input or discrete FET optimization. | Choose when input voltage exceeds 30V or when thermal management favors discrete FET placement. |
Compared with MP2315DJ-LF-Z and TPS54331DR, the AOZ8000HI delivers higher output current in a smaller footprint with no external compensation - making it optimal for space- and thermal-constrained 5A PoL applications where input stays ≤30V.
Availability
AoZ8000HI is available at Aetrix Electronics and suitable for industrial PLC I/O modules, telecom line cards, and NAS power systems requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for AOZ8000HI 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-efficiency MOSFETs, power ICs, and advanced packaging technologies for power conversion.
The AOZ8000HI belongs to AOS's AOZ series of integrated DC-DC regulators, designed specifically for compact, high-density point-of-load power delivery in industrial, telecom, and computing applications.
FAQ
What is the maximum recommended output current for AOZ8000HI under continuous operation?
The AOZ8000HI is rated for 5A continuous output current when mounted on a 4-layer PCB with ≥2 in² of 2-oz copper on the thermal pad layer and ambient temperature ≤60°C. Derating applies above 60°C ambient or with reduced copper area. The AOZ8000HI datasheet specifies 5A as the guaranteed continuous current under defined thermal conditions - exceeding this may trigger thermal shutdown or reduce reliability.
Does AOZ8000HI require external compensation components?
No, the AOZ8000HI uses an internal constant-on-time (COT) control architecture with fully integrated loop compensation. This eliminates the need for external RC networks or type-II/type-III compensators. The AOZ8000HI achieves stable regulation across input and load variations using only the FB resistor divider and standard input/output capacitors - simplifying design and reducing bill-of-materials.
What package type and lead finish does AOZ8000HI use?
The AOZ8000HI is packaged in a DFN3x3-10 (3mm × 3mm, 0.75mm height) with exposed thermal pad and matte tin (Sn) lead finish. It complies with AOS Green Policy: halogen-free molding compound (Br/Cl <900ppm each, total <1500ppm) and RoHS Directive 2011/65/EU. The AOZ8000HI is not offered in TO-220 or other legacy packages.
Can AOZ8000HI operate with input voltages below 4.5V?
No, the AOZ8000HI has a minimum input voltage of 4.5V due to its internal UVLO threshold of 4.0V (with 0.5V hysteresis). Operation below 4.5V will cause the device to remain disabled or exhibit unstable regulation. For sub-4.5V applications, consider alternatives such as the AOZ8210AI (2.5–5.5V input) - the AOZ8000HI is strictly limited to 4.5–30V operation per its validated specification.
How is over-current protection implemented in AOZ8000HI?
The AOZ8000HI implements cycle-by-cycle over-current protection that triggers hiccup mode upon sustained overload or short-circuit. When current limit is exceeded, the device shuts down for ~500ms before attempting restart. This protects both the AOZ8000HI and external components from thermal damage while maintaining system-level fault visibility. The AOZ8000HI does not latch off permanently and resumes normal operation after fault clearance.
AOZ8000HI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.6V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 60W
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 1.85pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
AOZ8000HI FAQ
1.How can I place an order for AOZ8000HI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8000HI 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 AOZ8000HI reliable?
The price and inventory of AOZ8000HI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8000HI is usually 5 days.
3.What payment methods are accepted for AOZ8000HI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8000HI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8000HI?
AOZ8000HI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8000HI 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 AOZ8000HI?
For technical support, including AOZ8000HI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8000HI requirements.
6.How does Aetrix verify that AOZ8000HI is sourced from the original manufacturer or authorized distributors?
All AOZ8000HI 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 AOZ8000HI meets industry standards.
7.What is the process for return or replacement of AOZ8000HI?
All AOZ8000HI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8000HI, 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 AOZ8000HI part is unused and in its original packaging.
Return procedure for AOZ8000HI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8000HI Tags
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