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Alpha & Omega Semiconductor Inc. AOZ1334ADI-02
- Part No.:
- AOZ1334ADI-02
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
AOZ1334ADI-02.pdf
- Description:
- 5.5V/10A SINGLE CHANNEL SMART LO
- Quantity:
- Payment:
- Shipping:
Inventory:4,955
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Product details
Overview
AOZ1334ADI-02 from Alpha and Omega Semiconductor is a single-channel smart load switch integrating an n-channel MOSFET for 0.8V–5.5V input operation, delivering 10A continuous current with 3.6mΩ RDS(ON) at VBIAS = 5V and VIN = 1.05V, and featuring integrated 220Ω output discharge. It serves as a power-path control device in portable computing power rails.
For engineers reviewing the AOZ1334ADI-02 datasheet, pinout, applications, or equivalent options, key selection criteria include its 3mm × 3mm DFN-8L thermal package, 60µA quiescent current, 0.5ms turn-on rise time, bias voltage range (2.5V–5.5V), and guaranteed -40°C to +85°C ambient operation.
Technical Context
The AOZ1334ADI-02 implements a charge-pump–assisted gate driver architecture to maintain low RDS(ON) across wide input voltage (0.8V–5.5V) and bias voltage (2.5V–5.5V) ranges. Its internal logic accepts TTL/CMOS-compatible ON pin signals with 1.2V high-threshold and 0.5V low-threshold.
It integrates a dedicated 220Ω pull-down resistor between OUT and GND, enabling rapid output discharge when disabled. Thermal performance is enhanced by a bottom-exposed EPAD in the DFN-8L package, achieving θJA = 60°C/W and θJC = 8°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V to 5.5V - supports ultra-low-voltage rail control (e.g., 1.05V core supplies) while maintaining full 10A capability. |
| Continuous Current | 10A - rated for sustained high-current loads such as SSD power rails or display backlight drivers without derating at +85°C ambient. |
| RDS(ON) | 3.6mΩ at VBIAS = 5V, VIN = 1.05V - enables <10mV conduction loss at 2.8A, critical for battery-powered efficiency. |
| Quiescent Current | 60µA - minimizes standby power draw in always-on system partitions like USB-C PD controllers or wake-up circuits. |
| Turn-On Rise Time | 0.5ms at VBIAS = 5V, VIN = 1.05V - provides controlled inrush limiting for capacitive loads up to 1000µF without external RC networks. |
| Output Discharge Resistor | 220Ω - discharges 100µF load to <10% VOUT in <2.2ms, preventing floating outputs and latch-up in multi-rail sequencing. |
| Ambient Temp Range | -40°C to +85°C - qualified for industrial-grade embedded applications including set-top boxes and telecom line cards. |
Pinout & Package
AOZ1334ADI-02 uses a thermally enhanced 3mm × 3mm DFN-8L package with exposed thermal pad (EPAD) on the bottom surface for PCB-level heat dissipation. The package complies with RoHS and green plating standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, EPAD | IN | Main power input terminal; requires local 10µF+ bypass capacitor to suppress inrush-induced voltage dip during turn-on. |
| 3 | VBIAS | Bias supply input (2.5V–5.5V); powers internal charge pump and logic - independent of IN voltage for robust low-VIN operation. |
| 4 | ON | Active-high enable input; compatible with 1.2V logic high threshold - directly drivable from microcontroller GPIOs without level shifting. |
| 5 | GND | Analog/digital ground reference; must be connected to low-impedance system ground plane adjacent to EPAD for thermal and noise integrity. |
| 6, 7, 8 | OUT | Switched output terminals; paralleled for 10A current handling - requires wide copper pours and thermal vias to EPAD for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low RDS(ON) | 3.6mΩ at 1.05VIN/5VBIAS enables <36mW conduction loss at 10A - reduces thermal stress in compact portable enclosures. |
| Integrated Output Discharge | 220Ω internal resistor eliminates need for external pull-down, simplifying BOM and ensuring reliable power-rail shutdown sequencing. |
| Wide Input & Bias Range | 0.8V–5.5V input and 2.5V–5.5V bias support mixed-voltage systems - e.g., 1.05V SoC core rail switched using 3.3V system bias supply. |
| Low Quiescent Current | 60µA IQ allows use in always-on subsystems (e.g., USB-C CC logic, sensor hubs) without compromising battery life. |
| Fast, Controlled Turn-On | 0.5ms rise time limits di/dt-induced EMI and prevents overshoot on sensitive downstream loads like DDR memory rails. |
Applications
| Portable Computing Power Rails | SSD Main Power Switching |
|---|---|
|
Use Scenario: Enabling/disabling 1.05V or 1.2V CPU/GPU core rails in ultrabooks during sleep/wake transitions. IC Role / Device Role / Timing Role: Smart load switch providing sequenced, low-loss power delivery with fast turn-on and integrated discharge for clean state transitions. Use Value: Eliminates external discharge circuitry and reduces inrush current spikes that cause system brownouts during wake-up. |
Use Scenario: Controlling 3.3V main power to NVMe SSD modules in thin client devices. IC Role / Device Role / Timing Role: High-current (10A) load switch with 220Ω discharge ensuring SSD power-down completes before host reset assertion. Use Value: Guarantees <2.2ms VOUT decay for 100µF SSD bulk capacitance - meets PCIe power sequencing compliance requirements. |
| Tablet PC Display Backlight | Set-Top Box USB Hub Power Control |
|
Use Scenario: Switching 5V backlight driver power in 10-inch tablets with tight thermal constraints. IC Role / Device Role / Timing Role: Load switch managing peak 8A backlight current with minimal self-heating due to 3.6mΩ RDS(ON) and EPAD thermal path. Use Value: Enables 3mm × 3mm footprint without heatsink - preserves board space for battery expansion in slim form factors. |
Use Scenario: Individually enabling USB 3.0 ports on cable set-top boxes to meet USB-IF power budget limits. IC Role / Device Role / Timing Role: Single-channel switch with 60µA IQ supporting low-power port suspend/resume states without auxiliary regulators. Use Value: Reduces standby power per port by >90% versus discrete FET + resistor solutions, extending STB energy certification margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22919DCKR | 5.5V max VIN, 4A rating, 22mΩ RDS(ON), no integrated discharge resistor. | Limited to lower-current peripherals (e.g., USB 2.0 ports); requires external 220Ω pull-down for discharge. | Select when 4A current suffices and board space allows adding external discharge components. |
| SCT2450STER | 5.5V max VIN, 5A rating, 12mΩ RDS(ON), 2.5V–5.5V bias, integrated 220Ω discharge. | Lower current capacity restricts use to mid-tier tablets or dual-port USB hubs - not suitable for 10A SSD rails. | Choose for cost-sensitive designs needing integrated discharge but not requiring 10A capability. |
Compared with TPS22919DCKR and SCT2450STER, the AOZ1334ADI-02 uniquely delivers 10A continuous current with sub-4mΩ RDS(ON) and integrated discharge in a 3mm × 3mm DFN - making it the only option among the three qualified for high-power portable storage and core rail switching where thermal density and sequencing integrity are critical.
Availability
AOZ1334ADI-02 is available at Aetrix Electronics and suitable for portable computing power rails, SSD main power switching, and tablet display backlight control requiring stable component supply across industrial temperature grades.
Supply support for AOZ1334ADI-02 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 and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, load switches, and power ICs for computing, consumer, and industrial markets.
The AOZ1334ADI-02 belongs to AOS's smart load switch product line, engineered specifically for high-current, low-voltage power-path control in space-constrained portable electronics with strict thermal and sequencing requirements.
FAQ
What is the maximum continuous current rating for the AOZ1334ADI-02?
The AOZ1334ADI-02 is rated for 10A continuous current at -40°C to +85°C ambient temperature with proper PCB thermal design. This rating assumes use of the recommended 3mm × 3mm DFN-8L land pattern with thermal vias to inner ground planes. Exceeding 10A may cause permanent damage even with short-duration pulses above 12A.
Does the AOZ1334ADI-02 require an external pull-down resistor on the OUT pin?
No. The AOZ1334ADI-02 integrates a 220Ω internal pull-down resistor between OUT and GND, activated automatically when the ON pin is low. This eliminates the need for external discharge components and ensures reliable power-rail shutdown sequencing in applications like SSD hot-plug detection.
What is the minimum VBIAS voltage required for full 10A operation of the AOZ1334ADI-02?
The AOZ1334ADI-02 requires VBIAS ≥ 2.5V to guarantee full 10A current capability and optimal RDS(ON). At VBIAS = 2.5V, RDS(ON) increases to ~5mΩ (vs. 3.6mΩ at 5V), resulting in higher conduction loss - but the device remains fully functional and rated for 10A continuous current across the full -40°C to +85°C range.
Can the AOZ1334ADI-02 operate with VIN below 1.0V?
Yes. The AOZ1334ADI-02 supports VIN as low as 0.8V, making it suitable for next-generation ultra-low-voltage rails such as 0.85V or 0.9V SoC cores. At 0.8VIN, RDS(ON) rises to ~6.5mΩ (typical), but the device maintains full 10A capability with appropriate thermal management and VBIAS ≥ 2.5V.
What is the thermal resistance (θJA) of the AOZ1334ADI-02 in its standard DFN-8L package?
The AOZ1334ADI-02 has a junction-to-ambient thermal resistance (θJA) of 60°C/W when mounted on a standard 4-layer PCB with 1-in² 2-oz copper area and 6 thermal vias under the EPAD. Its junction-to-case resistance (θJC) is 8°C/W, enabling efficient heat transfer to the PCB ground plane for high-current operation.
AOZ1334ADI-02 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 8-WDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 0.8V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- 2.5V ~ 5.5V
- Current - Output (Max):
- 10A
- Rds On (Typ):
- 4.5mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Slew Rate Controlled
- Fault Protection:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN-EP (3x3)
AOZ1334ADI-02 FAQ
1.How can I place an order for AOZ1334ADI-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1334ADI-02 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 AOZ1334ADI-02 reliable?
The price and inventory of AOZ1334ADI-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1334ADI-02 is usually 5 days.
3.What payment methods are accepted for AOZ1334ADI-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1334ADI-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1334ADI-02?
AOZ1334ADI-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1334ADI-02 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 AOZ1334ADI-02?
For technical support, including AOZ1334ADI-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1334ADI-02 requirements.
6.How does Aetrix verify that AOZ1334ADI-02 is sourced from the original manufacturer or authorized distributors?
All AOZ1334ADI-02 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 AOZ1334ADI-02 meets industry standards.
7.What is the process for return or replacement of AOZ1334ADI-02?
All AOZ1334ADI-02 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1334ADI-02, 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 AOZ1334ADI-02 part is unused and in its original packaging.
Return procedure for AOZ1334ADI-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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