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Alpha & Omega Semiconductor Inc. AOZ1334DI-01
- Part No.:
- AOZ1334DI-01
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
AOZ1334DI-01.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,665
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Product details
Overview
AOZ1334DI-01 from Alpha and Omega Semiconductor is a single-channel smart load switch featuring an integrated n-channel MOSFET, 10A continuous current capability, 5mΩ RDS(ON) at 5V VBIAS, 35µA quiescent current, and quick output discharge via internal 220Ω resistor - deployed in portable computing power rail control.
For engineers reviewing the AOZ1334DI-01 datasheet, pinout, applications, or equivalent options, key selection considerations include input voltage range (0.8V to VBIAS−1.5V), thermal performance (θJA = 60°C/W), turn-on rise time (8.5µs), bias supply compatibility (3.2–5.5V), and DFN-8L package integration with exposed thermal pad.
Technical Context
The AOZ1334DI-01 implements a low-side n-channel MOSFET switch controlled by TTL/CMOS-compatible ON pin logic, with internal gate drive optimized for fast switching (tR = 8.5µs) and minimal voltage droop under high-current transients. It requires separate VBIAS (3.2–5.5V) for gate biasing independent of VIN.
Its functional architecture integrates quick-output-discharge (QOD) using a dedicated 220Ω internal pull-down resistor tied to OUT, activated when ON = low. Thermal management relies on the 3mm × 3mm DFN-8L package with bottom thermal pad (θJC = 8°C/W) and ambient rating of −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Current | 10A - supports high-current rails in SSDs and ultrabooks without external heatsinking. |
| RDS(ON) | 5mΩ @ VBIAS = 5V, VIN = 1.05V, TA = 85°C - minimizes conduction loss and self-heating at full load. |
| VBIAS Range | 3.2V to 5.5V - enables stable gate drive across standard system bias rails including USB PD and 3.3V/5V domains. |
| Quiescent Current | 35µA - reduces standby power draw in always-on subsystems like USB-C port controllers. |
| Turn-On Rise Time | 8.5µs @ VIN = 1.05V - ensures controlled inrush limiting for sensitive downstream ICs. |
| Output Discharge Resistor | 220Ω - actively pulls OUT to GND within microseconds after disable, preventing floating voltage on powered-off rails. |
| Ambient Temp Range | −40°C to +85°C - qualified for industrial-grade operation in compact consumer enclosures. |
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 rail; requires local 10µF+ bypass capacitor to suppress inrush-induced dip. |
| 3 | VBIAS | Bias supply input for internal gate driver; must be 3.2–5.5V; decoupling capacitor required. |
| 4 | ON | Active-high enable control; TTL/CMOS compatible; 1.2V min high threshold; must not float. |
| 5 | GND | Signal and power ground reference; connects directly to PCB ground plane for thermal and noise integrity. |
| 6, 7, 8 | OUT | Switched output terminal; delivers load current to downstream circuitry; ties to internal QOD resistor when OFF. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Quick Output Discharge | 220Ω internal pull-down eliminates need for external discharge circuitry, reducing BOM count and board space. |
| Ultra-Low RDS(ON) | 5mΩ at 5V VBIAS enables <10mV drop at 2A, critical for low-voltage core rails (e.g., 1.05V CPU I/O). |
| Wide Input Voltage Range | 0.8V to VBIAS−1.5V allows use with sub-1V logic supplies while maintaining optimal RDS(ON). |
| Thermally Enhanced Package | DFN-8L with EPAD achieves θJC = 8°C/W, enabling 10A operation with minimal PCB copper area. |
| Fast Switching Control | 8.5µs tR and 3.5µs tF support dynamic power sequencing in multi-rail systems without cross-conduction risk. |
Applications
| Ultrabook Power Sequencing | SSD VCC Rail Control |
|---|---|
|
Use Scenario: Enables/disables auxiliary 1.05V or 1.2V power rails during sleep/wake transitions in ultrabooks. IC Role / Device Role / Timing Role: Low-side load switch providing precise, fast-turning power gating with inrush control. Use Value: Prevents voltage droop on shared bias rails and eliminates floating outputs during state changes. |
Use Scenario: Controls main 3.3V VCC supply to NAND flash modules in M.2 SSDs during hot-plug or firmware update. IC Role / Device Role / Timing Role: High-current (10A) power switch with integrated discharge for safe power cycling. Use Value: Ensures rapid, reliable rail shutdown and discharge - meeting JEDEC U.2 and NVMe power-loss requirements. |
| Tablet PC USB-C Port Power | Set-Top Box HDMI Hot-Plug Detection |
|
Use Scenario: Manages 5V VBUS delivery to USB-C receptacles in tablets, responding to CC line detection signals. IC Role / Device Role / Timing Role: Smart load switch with logic-level ON control and fast turn-on (<10µs) for responsive port enablement. Use Value: Delivers clean, glitch-free 5V power while minimizing standby current (35µA) between connection events. |
Use Scenario: Powers HDMI receiver ICs only when a source device is detected, reducing idle power in STBs. IC Role / Device Role / Timing Role: Load switch triggered by microcontroller GPIO to energize HDMI PHY and CEC circuitry. Use Value: Eliminates need for discrete FET + resistor + diode discharge network, cutting layout complexity and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22916BLYFPR | Lower 3A rating, 29mΩ RDS(ON), no integrated QOD resistor; requires external discharge path. | Suitable for lower-current peripherals (e.g., USB hubs), not 10A SSD or ultrabook rails. | Select when cost sensitivity outweighs current demand and external discharge is acceptable. |
| RT9711CGJ5 | 6A rating, 12mΩ RDS(ON), 3.3–5.5V VBIAS, includes QOD but slower tR (25µs). | Valid for tablet I/O rails where 10A is unnecessary and moderate switching speed suffices. | Choose when thermal margin is less constrained and footprint compatibility with SOT-23-5 is preferred. |
Compared with TPS22916BLYFPR and RT9711CGJ5, the AOZ1334DI-01 uniquely delivers 10A capacity with 5mΩ RDS(ON) and integrated 220Ω QOD in a thermally optimized 3×3mm DFN - making it the only option among the three qualified for high-current, fast-sequencing, and space-constrained applications like ultrabooks and NVMe SSDs.
Availability
AOZ1334DI-01 is available at Aetrix Electronics and suitable for portable computers, SSD power management, and tablet PC USB-C port control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AOZ1334DI-01 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 AOZ1334DI-01 belongs to AOS's Smart Load Switch product line, engineered specifically for high-current, low-voltage power rail control in space-constrained mobile platforms where thermal efficiency and fast, clean switching are critical.
FAQ
What is the maximum junction temperature specification for the AOZ1334DI-01?
The AOZ1334DI-01 has an absolute maximum junction temperature (TJ) of +150°C. Operation above this limit risks permanent damage. Designers must ensure thermal design - including PCB copper area, airflow, and load current - keeps actual TJ below 150°C, especially at 10A continuous current and 85°C ambient. The datasheet provides θJA = 60°C/W and θJC = 8°C/W to support this calculation.
Does the AOZ1334DI-01 require an external discharge resistor?
No, the AOZ1334DI-01 does not require an external discharge resistor. It integrates a 220Ω internal pull-down resistor between OUT and GND that activates automatically when the ON pin is pulled low. This feature ensures rapid, controlled discharge of downstream capacitance - eliminating BOM cost and layout overhead associated with discrete discharge networks.
What is the minimum recommended input voltage for the AOZ1334DI-01?
The AOZ1334DI-01 supports an input voltage (VIN) as low as 0.8V, provided VBIAS is within its 3.2–5.5V range and VIN ≤ VBIAS − 1.5V. At 0.8V VIN and 5V VBIAS, the device maintains functional RDS(ON) and switching performance, making it suitable for sub-1V logic rail control in modern ultrabooks and tablets.
Can the AOZ1334DI-01 operate with a 3.3V bias supply?
Yes, the AOZ1334DI-01 is fully specified to operate with a 3.3V VBIAS supply. At 3.3V VBIAS, RDS(ON) increases to 4.6–7.6mΩ (vs. 3.9–6.3mΩ at 5V), and switching times remain within spec (e.g., tR = 12µs typ). This makes it compatible with common 3.3V system bias domains while retaining 10A capability and thermal safety margins.
Is the AOZ1334DI-01 pin-compatible with other members of the AOZ133x family?
No, the AOZ1334DI-01 is not pin-compatible with other AOZ133x variants such as AOZ1331 or AOZ1332. Its DFN-8L pinout - with IN on pins 1/2/EPAD, VBIAS on pin 3, ON on pin 4, GND on pin 5, and OUT on pins 6/7/8 - is unique to this part. Substituting other AOZ133x devices requires PCB layout revision due to differing pin assignments and package footprints.
AOZ1334DI-01 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 ~ 4V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 10A
- Rds On (Typ):
- 4.6mOhm
- 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-01 FAQ
1.How can I place an order for AOZ1334DI-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1334DI-01 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-01 reliable?
The price and inventory of AOZ1334DI-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1334DI-01 is usually 5 days.
3.What payment methods are accepted for AOZ1334DI-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1334DI-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1334DI-01?
AOZ1334DI-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1334DI-01 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-01?
For technical support, including AOZ1334DI-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1334DI-01 requirements.
6.How does Aetrix verify that AOZ1334DI-01 is sourced from the original manufacturer or authorized distributors?
All AOZ1334DI-01 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-01 meets industry standards.
7.What is the process for return or replacement of AOZ1334DI-01?
All AOZ1334DI-01 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1334DI-01, 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-01 part is unused and in its original packaging.
Return procedure for AOZ1334DI-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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