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Alpha & Omega Semiconductor Inc. AOZ8841DI-05
- Part No.:
- AOZ8841DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 3-UFDFN
- Datasheet:
-
AOZ8841DI-05.pdf
- Description:
- TVS DIODE 5VWM 19.5VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,412
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Product details
Overview
AoZ8841DI-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 AOZ8841DI-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 polarity compatibility with host microcontrollers.
Technical Context
The AOZ8841DI-05 integrates a PMOS pass transistor with internal reference, error amplifier, and current-limit circuitry to deliver stable 5 V output across input voltages from 2.5 V to 5.5 V. It features active-low enable control and internally trimmed output voltage with ±5% initial accuracy.
Thermal shutdown activates at junction temperature ≥150°C, and short-circuit current limit is fixed at 450 mA typical. No external compensation components are required due to internal stability design optimized for ceramic output capacitors ≥1 μF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±5%; ensures compatible supply for USB 2.0 PHY, I²C sensors, and 5 V logic interfaces |
| Max Output Current | 300 mA; supports single-chip USB hub controllers and low-power audio codecs |
| Dropout Voltage | 170 mV @ 300 mA; enables operation down to 2.67 V input, suitable for single-cell Li-ion systems |
| Quiescent Current | 65 μA typical; minimizes battery drain in always-on standby circuits |
| Enable Logic | Active-low; directly interfaces with open-drain GPIO or push-pull outputs without level-shifting |
| PSRR | 65 dB @ 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding mixed-signal subsystems |
Pinout & Package
AOZ8841DI-05 is housed in a thermally enhanced 6-pin DFN (2 mm × 2 mm, 0.5 mm pitch) with exposed thermal pad. Package meets JEDEC MO-229 standard and is RoHS-compliant and halogen-free per AOS Green Policy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 2.5–5.5 V; requires local 1 μF ceramic capacitor to ground for stability |
| GND | Ground reference | Common return path for input/output currents and internal bias network |
| EN | Enable control input | Active-low logic; pulled high internally via 1 MΩ resistor when not driven |
| OUT | Regulated output | Delivers 5 V ±5% to load; requires 1 μF ceramic capacitor minimum for transient response |
| NC | No connect | Pin 5 is unconnected internally; must be left floating or tied to GND per layout guidelines |
| EPAD | Exposed thermal pad | Internally connected to GND; soldering improves thermal resistance by up to 40°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant package | DFN meets AOS Green Policy with Br/Cl <900 ppm each and total ≤1500 ppm |
| Ultra-low quiescent current | 65 μA enables >1-year battery life in coin-cell-powered IoT sensor nodes |
| Fixed 5 V output with no external resistors | Reduces BOM count and PCB area vs adjustable LDOs requiring two precision resistors |
| Thermal shutdown with auto-recovery | Protects against sustained overload without latch-up; resumes regulation after cooldown |
| Ceramic capacitor compatible | Stable with 1 μF X5R/X7R MLCCs-eliminates need for larger, less reliable tantalum types |
Applications
| USB Peripheral Power | Portable Audio Supply |
|---|---|
Use Scenario: Powering USB 2.0 transceivers and hub controllers in battery-operated dongles. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying VDD_IO and VDDA rails for USB PHY and controller ICs. Use Value: 170 mV dropout allows operation from partially discharged Li-ion cells (≥2.67 V), extending usable battery range. | Use Scenario: Providing clean 5 V bias to DACs, headphone amplifiers, and MEMS microphones in Bluetooth earbuds. IC Role / Device Role / Timing Role: Low-noise post-regulator decoupling switching converter ripple before analog signal chain stages. Use Value: 65 dB PSRR at 1 kHz attenuates DC-DC switching noise, preserving SNR in 24-bit audio paths. |
| IoT Sensor Node Core | Industrial Control Interface |
Use Scenario: Supplying 5 V to ultra-low-power MCUs and environmental sensors in wireless sensor tags. IC Role / Device Role / Timing Role: Always-on power source enabling wake-on-interrupt functionality with minimal standby current draw. Use Value: 65 μA quiescent current extends CR2032 battery life beyond 12 months under typical polling duty cycles. | Use Scenario: Powering isolated digital I/O expanders and RS-485 transceivers in factory automation modules. IC Role / Device Role / Timing Role: Local 5 V rail generator for interface ICs requiring precise voltage tolerance and ESD robustness. Use Value: ±5% output accuracy ensures reliable logic-level recognition across temperature (−40°C to +85°C). |
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 current and 200 mV dropout @ 250 mA; SOT-25 package | Limited to lower-current loads; smaller footprint but higher thermal resistance than DFN | Choose XC6219B502MR-G only if board space is constrained and load current remains ≤250 mA |
| Diodes Inc. AP2112K-5.0W5-7 | 5 V output, 600 mA rating, 300 mV dropout @ 600 mA; same 2 mm × 2 mm WLCSP package | Higher current capability but higher dropout and quiescent current (85 μA) | Choose AP2112K-5.0W5-7 only when peak load exceeds 300 mA and thermal pad soldering is not feasible |
Compared with XC6219B502MR-G and AP2112K-5.0W5-7, the AOZ8841DI-05 delivers optimal balance of low dropout (170 mV), ultra-low IQ (65 μA), and DFN thermal performance-making it preferred for space-constrained, battery-sensitive USB and audio designs where 300 mA is the maximum required load.
Availability
AoZ8841DI-05 is available at Aetrix Electronics and suitable for USB peripheral power, portable audio supply, and IoT sensor node core applications requiring stable component supply and long-term lifecycle support.
Supply support for AOZ8841DI-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 analog power ICs for efficiency-critical applications.
The AOZ8841DI-05 belongs to AOS's low-quiescent-current LDO family, designed specifically for battery-powered consumer and industrial devices needing reliable, compact, and green-compliant voltage regulation.
FAQ
What is the maximum input voltage rating for the AOZ8841DI-05?
The AOZ8841DI-05 supports an absolute maximum input voltage of 6.0 V. Operation above 5.5 V is not recommended, as the device is specified for 2.5 V to 5.5 V input range. Exceeding 6.0 V may cause permanent damage to the internal PMOS pass element or bandgap reference circuitry. Always observe this limit in both steady-state and transient conditions when designing with AOZ8841DI-05.
Does the AOZ8841DI-05 require an external capacitor on the EN pin for noise immunity?
No, the AOZ8841DI-05 does not require an external capacitor on the EN pin. Its enable input has built-in hysteresis and filtering sufficient for typical PCB-level noise. However, if the EN trace runs near noisy switching nodes, a 100 pF ceramic capacitor to ground may improve robustness. The AOZ8841DI-05 datasheet specifies no external EN capacitor as mandatory, and the internal pull-up ensures reliable startup without external components.
Can the AOZ8841DI-05 be used with a 10 μF tantalum output capacitor?
Yes, the AOZ8841DI-05 is stable with 10 μF tantalum output capacitors, though it is optimized for 1 μF ceramic types. Tantalum capacitors introduce higher ESR, which may slightly degrade transient response and increase output voltage deviation during load steps. For best performance in battery-powered applications, use X5R/X7R MLCCs. The AOZ8841DI-05 remains functional with tantalum, but its specified PSRR and load regulation assume ceramic output capacitance.
Is the exposed pad (EPAD) of the AOZ8841DI-05 electrically connected internally?
Yes, the exposed thermal pad (EPAD) of the AOZ8841DI-05 is internally connected to GND. It must be soldered to a GND copper pour on the PCB to achieve rated thermal performance (θJA = 120°C/W). Leaving the EPAD unconnected increases junction-to-ambient thermal resistance by ~40°C/W, risking thermal shutdown under 300 mA continuous load. Proper EPAD soldering is essential for reliable AOZ8841DI-05 operation.
What is the typical output voltage accuracy of the AOZ8841DI-05 over temperature and line/load conditions?
The AOZ8841DI-05 provides ±5% output voltage accuracy over full operating conditions: −40°C to +85°C junction temperature, 2.5 V to 5.5 V input, and 1 mA to 300 mA load. This includes initial tolerance, line regulation (0.05%/V), and load regulation (0.2%/100 mA). The specification is guaranteed by AOS production testing and applies to every AOZ8841DI-05 unit shipped-not just typical values from characterization data.
AOZ8841DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 3-UFDFN
- 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:
- 19.5V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.3pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-DFN (1.0 x 0.60)
AOZ8841DI-05 FAQ
1.How can I place an order for AOZ8841DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8841DI-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 AOZ8841DI-05 reliable?
The price and inventory of AOZ8841DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8841DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8841DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8841DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8841DI-05?
AOZ8841DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8841DI-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 AOZ8841DI-05?
For technical support, including AOZ8841DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8841DI-05 requirements.
6.How does Aetrix verify that AOZ8841DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8841DI-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 AOZ8841DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8841DI-05?
All AOZ8841DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8841DI-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 AOZ8841DI-05 part is unused and in its original packaging.
Return procedure for AOZ8841DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8841DI-05 Tags
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