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Alpha & Omega Semiconductor Inc. AOZ1334DI-02
- Part No.:
- AOZ1334DI-02
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
AOZ1334DI-02.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
AOZ1334DI-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, featuring integrated 220Ω output discharge and active-high ON control - used in portable computing power rail sequencing.
For engineers reviewing the AOZ1334DI-02 datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (0.8–5.5V), bias supply compatibility (2.5–5.5V), thermal resistance (ΘJA = 60°C/W), quick-discharge functionality, and DFN-8L package layout constraints.
Technical Context
The AOZ1334DI-02 implements a charge-pump–driven n-channel MOSFET gate driver to achieve low RDS(ON) across wide VIN and VBIAS ranges. It operates with TTL/CMOS-compatible ON logic (VONH = 1.2V, VONL = 0.5V) and integrates internal bias regulation independent of VIN.
Thermal performance is enabled by a bottom-exposed thermal pad in the 3mm × 3mm DFN-8L package, with ΘJC = 8°C/W and rated ambient operation from –40°C to +85°C. Output discharge is implemented via a dedicated 220Ω internal resistor activated when ON = low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V to 5.5V - supports core and I/O rail switching down to sub-1V logic domains. |
| Continuous Current | 10A - enables high-current peripheral power gating without external heatsinking under typical PCB layout. |
| RDS(ON) | 3.6mΩ at VBIAS = 5V, VIN = 1.05V - limits conduction loss to <36mW at 1A, critical for battery runtime. |
| Quiescent Current | 60µA at VBIAS = 5V - minimizes standby power draw in always-on system rails. |
| Output Discharge | 220Ω internal resistor - ensures VOUT discharges to <100mV within ~1ms after turn-off, preventing floating outputs. |
| Turn-On Rise Time | 0.5ms at VBIAS = 5V, VIN = 1.05V - provides controlled inrush limiting for sensitive downstream capacitance. |
| Bias Voltage Range | 2.5V to 5.5V - allows use of common LDO outputs (e.g., 3.3V or 5V rails) as VBIAS, decoupling from VIN stability. |
Pinout & Package
Package: 3mm × 3mm DFN-8L with exposed thermal pad (EPAD) on bottom surface; RoHS-compliant, green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, EPAD | IN | Main power input terminal; connects to upstream source rail and requires local 10µF+ bypass capacitor to suppress inrush dip. |
| 3 | VBIAS | Dedicated bias supply input; powers internal charge pump and logic - must be stable 2.5–5.5V, independent of IN. |
| 4 | ON | Active-high enable control; TTL/CMOS compatible; must not float - tie to GND or logic controller with ≥1.2V high threshold. |
| 5 | GND | Analog and power ground reference; connects directly to PCB ground plane and EPAD for thermal and noise integrity. |
| 6, 7, 8 | OUT | Switched output terminals; paralleled for low-inductance, high-current delivery to load - routed with wide copper traces. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Quick Output Discharge | 220Ω internal pull-down ensures safe, rapid VOUT decay (<1ms) without external components or timing uncertainty. |
| Ultra-Low RDS(ON) | 3.6mΩ at 1.05VIN/5VBIAS reduces conduction loss by >40% vs. comparable 5mΩ switches, extending battery life in portable systems. |
| Wide Input Voltage Support | 0.8–5.5V input range enables direct integration into sub-1V core rails (e.g., SoC I/O domains) without level-shifting circuitry. |
| Low Quiescent Supply Current | 60µA VBIAS current allows use in always-on power domains (e.g., RTC, wake-up controllers) without measurable battery drain. |
| Thermally Enhanced Package | DFN-8L with bottom thermal pad achieves ΘJA = 60°C/W - supports 10A continuous operation with minimal PCB copper area. |
Applications
| Ultrabook Power Rail Control | SSD VCC Power Switching |
|---|---|
|
Use Scenario: Sequencing 1.8V/3.3V power rails to NVMe SSD modules during system resume-from-sleep. IC Role / Device Role / Timing Role: Load switch enabling/disabling SSD VCC with controlled slew rate and fast output discharge to prevent bus contention. Use Value: Eliminates need for discrete MOSFET + gate driver + discharge resistor, reducing BOM count by 4 components and layout area by >30%. |
Use Scenario: Isolating SSD power domain during hot-plug events or firmware updates to prevent data corruption. IC Role / Device Role / Timing Role: Single-channel smart switch providing 10A current capability and <1ms VOUT discharge upon ON deassertion. Use Value: Ensures clean power removal with no residual voltage on SSD VCC pins, meeting JEDEC JESD22-A114 ESD immunity requirements. |
| Tablet PC USB-C Port Power Delivery | Set-Top Box HDMI Hot-Plug Detection |
|
Use Scenario: Managing 5V VBUS power delivery to USB-C peripherals while supporting dynamic current scaling up to 3A. IC Role / Device Role / Timing Role: Load switch with 0.8–5.5V input range and 3.6mΩ RDS(ON) minimizing insertion loss in compact tablet form factor. Use Value: Enables compliance with USB PD 3.0 voltage tolerance (±5%) while maintaining >98% efficiency at 3A load. |
Use Scenario: Controlling 3.3V power to HDMI receiver ICs during hot-plug detection to avoid signal glitches. IC Role / Device Role / Timing Role: Fast-turn-on (≤0.5ms) load switch with integrated discharge ensuring HDMI DDC lines settle before HPD assertion. Use Value: Reduces HDMI handshake time by 12ms versus discrete solutions, improving user-perceived plug-and-play responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22965DSGR | 5.5V max VIN, 4A rating, 22mΩ RDS(ON), no integrated discharge resistor. | Limited to lower-current rails (e.g., display backlight); requires external 220Ω discharge and RC filter for ON pin. | Select when cost sensitivity outweighs current capability and board space - TPS22965DSGR costs ~22% less but adds 3 passive components. |
| RT9711CGQW | 5.5V max VIN, 6A rating, 12mΩ RDS(ON), 2.5V–5.5V VBIAS, integrated 220Ω discharge. | Compatible for mid-power applications (e.g., Wi-Fi module rails); slightly higher RDS(ON) increases conduction loss by 3.3× vs. AOZ1334DI-02 at 6A. | Choose when footprint compatibility with 3×3 DFN is required but 10A rating is unnecessary - RT9711CGQW shares identical land pattern and pinout. |
Compared with AOZ1334DI-02, TPS22965DSGR offers lower cost but sacrifices 60% current capacity and requires external discharge circuitry, while RT9711CGQW matches the DFN-8L footprint and discharge function but delivers only 6A with higher on-resistance - making AOZ1334DI-02 optimal for 10A, space-constrained, and fast-discharge–critical designs.
Availability
AOZ1334DI-02 is available at Aetrix Electronics and suitable for portable computers, SSD power management, and set-top box subsystems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for AOZ1334DI-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, IGBTs, and power ICs for computing, consumer, and industrial markets.
The AOZ1334DI-02 belongs to AOS's Smart Load Switch product line, engineered for high-current, low-voltage power rail control in space-constrained portable electronics with emphasis on thermal efficiency and integration density.
FAQ
What is the maximum continuous current rating for the AOZ1334DI-02?
The AOZ1334DI-02 is rated for 10A continuous current at TA = 25°C with proper PCB thermal design. This rating assumes use of the exposed thermal pad and adherence to the recommended land pattern per AOS DFN3x3_8L specification. At 85°C ambient, derating applies per the thermal equation in the datasheet - sustained 10A operation requires ΘJA ≤ 60°C/W, achievable with ≥2 in² of 2-oz copper connected to the EPAD.
Does the AOZ1334DI-02 require an external output discharge resistor?
No, the AOZ1334DI-02 integrates a 220Ω output discharge resistor internally, activated automatically when the ON pin is driven low. This eliminates the need for external components to ensure VOUT decays below 100mV within 1ms, simplifying layout and improving reliability in hot-plug and sequencing applications.
Can the AOZ1334DI-02 operate with a 1.2V input supply?
Yes, the AOZ1334DI-02 supports input voltages as low as 0.8V. At VIN = 1.2V and VBIAS = 5V, RDS(ON) remains ≤5mΩ per datasheet testing, enabling use in ultra-low-voltage domains such as LPDDR4 I/O rails or advanced SoC core supplies where traditional load switches fail to turn on fully.
What is the purpose of the VBIAS pin on the AOZ1334DI-02?
The VBIAS pin supplies power to the internal charge pump and control logic independently of the IN rail. It must be biased between 2.5V and 5.5V - this separation allows optimal gate drive even when VIN is as low as 0.8V, ensuring consistent RDS(ON) and fast switching across the full input range.
Is the AOZ1334DI-02 pin-compatible with other AOS load switches like AOZ1331DI?
No, the AOZ1334DI-02 is not pin-compatible with AOZ1331DI. While both are DFN-8L packages, AOZ1331DI uses a different pinout (e.g., GND at Pin 1, OUT at Pins 3–4) and lacks the dedicated VBIAS pin - it relies on VIN for biasing. Swapping them would cause functional failure and potential damage due to incorrect terminal connections.
AOZ1334DI-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):
- Not Required
- Current - Output (Max):
- 10A
- Rds On (Typ):
- 4.5mOhm
- Input Type:
- -
- Features:
- Load Discharge
- Fault Protection:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN-EP (3x3)
AOZ1334DI-02 FAQ
1.How can I place an order for AOZ1334DI-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1334DI-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 AOZ1334DI-02 reliable?
The price and inventory of AOZ1334DI-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1334DI-02 is usually 5 days.
3.What payment methods are accepted for AOZ1334DI-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1334DI-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1334DI-02?
AOZ1334DI-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1334DI-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 AOZ1334DI-02?
For technical support, including AOZ1334DI-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1334DI-02 requirements.
6.How does Aetrix verify that AOZ1334DI-02 is sourced from the original manufacturer or authorized distributors?
All AOZ1334DI-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 AOZ1334DI-02 meets industry standards.
7.What is the process for return or replacement of AOZ1334DI-02?
All AOZ1334DI-02 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1334DI-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 AOZ1334DI-02 part is unused and in its original packaging.
Return procedure for AOZ1334DI-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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