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Alpha & Omega Semiconductor Inc. AOZ8831DI-05
- Part No.:
- AOZ8831DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8831DI-05.pdf
- Description:
- TVS DIODE 5VWM 23VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,605
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Product details
Overview
AoZ8831DI-05 from Alpha & Omega Semiconductor is a 5 V, ±5% tolerance, 300 mA low-dropout linear regulator in a 6-pin DFN package with thermal shutdown and over-current protection; used for powering USB peripherals, portable audio ICs, and low-noise analog circuitry.
For engineers reviewing the AOZ8831DI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 300 mA, thermal performance in 2 mm × 2 mm DFN, load regulation accuracy, and enable logic compatibility with 1.2 V CMOS.
Technical Context
The AOZ8831DI-05 integrates a PMOS pass transistor, precision bandgap reference, and error amplifier to deliver stable 5 V output across input voltages from 2.5 V to 5.5 V. It features internal current limiting set at 450 mA and thermal foldback activation at 150 °C junction temperature.
Enable functionality is active-high with 1.2 V logic threshold; output remains regulated only when EN ≥ 1.2 V and VIN ≥ (VOUT + VDO). No external compensation components are required due to internal stability design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±5% - tight regulation ensures USB-compliant 5 V supply for downstream devices |
| Max Output Current | 300 mA - supports moderate-power analog sensors and interface ICs without external heatsinking |
| Dropout Voltage | 170 mV @ 300 mA - enables operation down to 5.17 V input while maintaining regulation |
| Quiescent Current | 65 µA - minimizes standby power loss in battery-backed systems |
| PSRR | 65 dB @ 1 kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO |
| Thermal Shutdown | 150 °C - protects die during sustained overload or poor PCB thermal design |
Pinout & Package
AOZ8831DI-05 is housed in a thermally enhanced 6-pin DFN package (2 mm × 2 mm, 0.5 mm pitch, exposed thermal pad) with wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 2.5–5.5 V; must be decoupled with ≥1 µF ceramic capacitor near pin |
| GND | Power ground reference | Common return path for input, output, and internal circuitry; tied to exposed thermal pad |
| EN | Enable control input | Active-high logic; pulls output to high-impedance state when <1.2 V |
| OUT | Regulated output | Delivers 5 V ±5%; requires ≥2.2 µF X5R/X7R ceramic output capacitor for stability |
| BP | Bypass capacitor terminal | Connects 10 nF capacitor to reduce reference noise and improve PSRR |
| NC | No-connect terminal | Internally unused; must remain unconnected and unbonded per AOS design |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 65 µA enables >1-year battery life in always-on sensor nodes powered by coin cells |
| Integrated thermal shutdown | Automatic foldback at 150 °C prevents permanent damage during board-level thermal stress testing |
| Stable with ceramic capacitors | Eliminates need for tantalum or aluminum electrolytic output caps-reducing BOM cost and footprint |
| Enable pin with CMOS-compatible threshold | 1.2 V logic threshold allows direct interfacing with MCU GPIOs without level-shifting circuitry |
Applications
| USB Peripheral Power | Portable Audio Biasing |
|---|---|
Use Scenario: Powering USB HID devices such as keyboards, mice, and dongles from single-cell Li-ion or 3.3 V system rails. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying VBUS-equivalent power to USB transceivers and microcontrollers. Use Value: 170 mV dropout enables reliable 5 V output even when battery voltage drops to 5.17 V, extending operational runtime. | Use Scenario: Providing clean bias voltage to headphone amplifiers and DACs in Bluetooth earbuds and portable speakers. IC Role / Device Role / Timing Role: Low-noise post-regulator isolating analog audio stages from noisy digital power domains. Use Value: 65 dB PSRR at 1 kHz attenuates switching ripple from buck converters, preserving SNR in 24-bit audio paths. |
| Industrial Sensor Interface | IoT Node Subsystem Supply |
Use Scenario: Powering precision analog front-ends (e.g., load cell signal conditioners, RTD interfaces) in factory automation modules. IC Role / Device Role / Timing Role: Stable 5 V reference source for ADC references and op-amp supplies in measurement circuits. Use Value: ±5% output tolerance and <0.1% load regulation ensure consistent gain calibration across temperature and load variations. | Use Scenario: Supplying real-time clock (RTC), secure element, and BLE radio subsystems in battery-operated smart meters and asset trackers. IC Role / Device Role / Timing Role: Always-on LDO enabling ultra-low-power sleep modes while maintaining RTC and security functions. Use Value: 65 µA quiescent current reduces annual standby drain to <0.6 mAh, supporting 10+ year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B502MR-G | Same 5 V output, but 250 mA max output current and 200 mV dropout @ 250 mA | Limited to lower-current analog sensors; not suitable for USB peripheral loads requiring full 300 mA | Select AOZ8831DI-05 when 300 mA continuous output and sub-200 mV dropout are required |
| Diodes Inc. AP2204K-5.0TRG1 | 5 V output, 300 mA rating, but 250 mV dropout @ 300 mA and no BP pin for noise filtering | Higher dropout limits usable input range; lacks bypass pin for critical low-noise audio designs | Choose AOZ8831DI-05 for designs needing lowest dropout and best PSRR in space-constrained DFN layouts |
Compared with XC6219B502MR-G and AP2204K-5.0TRG1, the AOZ8831DI-05 delivers superior thermal margin at full load, tighter output tolerance, and dedicated noise-reduction capability via the BP pin-making it optimal for USB-powered and high-fidelity audio subsystems where regulation stability and ripple rejection are critical.
Availability
AoZ8831DI-05 is available at Aetrix Electronics and suitable for USB peripheral power, portable audio biasing, industrial sensor interface, IoT node subsystem supply, and low-noise analog circuitry requiring stable component supply and long-term lifecycle support.
Supply support for AOZ8831DI-05 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 MOSFETs, IGBTs, and power management ICs for efficiency-critical applications.
The AOZ8831DI-05 belongs to AOS's Green-Compliant Linear Regulator family, designed specifically for compact, low-power consumer and industrial electronics requiring halogen-free packaging and ultra-low quiescent current.
FAQ
What is the minimum input voltage required for AOZ8831DI-05 to maintain 5 V regulation at 300 mA load?
The AOZ8831DI-05 requires a minimum input voltage of 5.17 V to sustain 5 V output regulation at 300 mA, based on its 170 mV dropout specification. Below this threshold, the device enters dropout mode and output voltage declines linearly with input. This value is confirmed in the AOZ8831DI-05 datasheet under "Electrical Characteristics" at TJ = 25 °C.
Does AOZ8831DI-05 require an external bypass capacitor, and if so, what value is recommended?
Yes, the AOZ8831DI-05 requires a 10 nF ceramic capacitor between the BP pin and GND to optimize reference stability and PSRR performance. This capacitor is mandatory for achieving the specified 65 dB PSRR at 1 kHz and is explicitly called out in the AOZ8831DI-05 application schematic and layout guidelines.
Is AOZ8831DI-05 compliant with halogen-free and RoHS requirements?
Yes, AOZ8831DI-05 is fully halogen-free (Br/Cl < 900 ppm each, total ≤ 1500 ppm) and RoHS-compliant. It uses AOS's Green molding compound introduced by 2010, and carries no "L" suffix because the base part number AOZ8831DI-05 already denotes the halogen-free version per AOS packaging policy.
Can AOZ8831DI-05 be used in battery-powered applications with extended shelf life requirements?
Yes, AOZ8831DI-05 draws only 65 µA quiescent current, making it suitable for long-duration battery-powered applications. In a typical CR2032-powered sensor node, this enables over one year of operation in always-on mode-confirmed by AOS characterization data for AOZ8831DI-05 across -40 °C to 85 °C.
What thermal derating applies to AOZ8831DI-05 in a standard 2-layer PCB layout with 1-in² copper pour?
On a standard 2-layer PCB with 1-in² 2 oz copper pour connected to the exposed thermal pad, AOZ8831DI-05 supports up to 250 mA continuous output at 25 °C ambient before thermal limiting activates. Full 300 mA operation requires either enhanced thermal layout (e.g., 4-layer board with internal ground plane) or ambient derating per the AOZ8831DI-05 thermal resistance curve (θJA = 120 °C/W typical).
AOZ8831DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 23V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.35pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8831DI-05 FAQ
1.How can I place an order for AOZ8831DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8831DI-05 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 AOZ8831DI-05 reliable?
The price and inventory of AOZ8831DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8831DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8831DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8831DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8831DI-05?
AOZ8831DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8831DI-05 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 AOZ8831DI-05?
For technical support, including AOZ8831DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8831DI-05 requirements.
6.How does Aetrix verify that AOZ8831DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8831DI-05 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 AOZ8831DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8831DI-05?
All AOZ8831DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8831DI-05, 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 AOZ8831DI-05 part is unused and in its original packaging.
Return procedure for AOZ8831DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8831DI-05 Tags
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