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Skyworks Solutions Inc. AAT3221IGV-1.8-T1
- Part No.:
- AAT3221IGV-1.8-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AAT3221IGV-1.8-T1.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,611
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Product details
Overview
AAT3221IGV-1.8-T1 from Skyworks Solutions is a nanopower 150 mA low-dropout linear regulator with 1.8 V fixed output, 1.1 µA quiescent current, 200 mV typical dropout at 100 mA, ±2% output accuracy, and active-high enable-designed for battery-powered portable electronics requiring ultra-low standby power.
For engineers reviewing the AAT3221IGV-1.8-T1 datasheet, AAT3221IGV-1.8-T1 pinout, AAT3221IGV-1.8-T1 application, or AAT3221IGV-1.8-T1 equivalent, key selection criteria include guaranteed 150 mA output under 1.1 µA IQ, stable operation with 1 µF ceramic capacitor, thermal/short-circuit protection, and SOT23-5 package compatibility with space-constrained handheld designs.
Technical Context
The AAT3221IGV-1.8-T1 implements a CMOS-based LDO architecture with internal P-channel pass transistor, enabling ultra-low ground current and fast load transient response. Its enable circuit accepts logic-level inputs (VEN(H) ≥ 2.4 V, VEN(L) ≤ 0.8 V) and reduces shutdown current to 20 nA.
It integrates over-temperature shutdown at 140 °C with 20 °C hysteresis and current-limit protection (350 mA short-circuit current), ensuring robust operation in thermally constrained portable systems without external supervision circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.8 V ±2% - eliminates external feedback network; supports 1.8 V logic rails and low-power microcontrollers. |
| Quiescent current | 1.1 µA typical - enables multi-year battery life in always-on sensor nodes and remote controls. |
| Dropout voltage | 200 mV typical at 100 mA - allows regulation from 2.0 V input down to 1.8 V output, extending usable battery range. |
| Max output current | 150 mA guaranteed - sufficient for baseband processors, display drivers, and RF front-end biasing in handheld devices. |
| PSRR | 50 dB @ 100 Hz - suppresses switching noise from adjacent DC-DC converters feeding the same battery source. |
| Enable polarity | Active-high - simplifies interface with standard GPIOs; EN pin draws ≤1 µA leakage when inactive. |
| Thermal shutdown | 140 °C trip with 20 °C hysteresis - prevents permanent damage during sustained overload or poor PCB heat sinking. |
Pinout & Package
Package: Pb-free 5-pin SOT23-5 (JEDEC MO-178AA), MSL1, 260 °C reflow compatible. Footprint optimized for minimal board area and thermal resistance (θJA = 150 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply connection | Accepts 2.5–5.5 V input; withstands 7 V transients ≤8 µs; requires local 1 µF ceramic decoupling if >2 cm from source. |
| 2 - GND | Ground reference | Single ground return path for IN, OUT, and EN; must connect directly to low-impedance ground plane to maintain PSRR and stability. |
| 3 - EN | Enable control input | CMOS-compatible active-high logic; asserts regulator when ≥2.4 V; disables to 20 nA shutdown current when ≤0.8 V. |
| 4 - NC | No-connect terminal | Internally unconnected; must remain floating-no external tie or trace connection permitted. |
| 5 - OUT | Regulated output | Delivers 1.8 V ±2% to load; requires ≥1 µF ceramic capacitor (X7R/X5R dielectric) placed adjacent to pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower quiescent current | 1.1 µA enables >10-year shelf life in coin-cell–powered IoT sensors and remote controls. |
| Ultra-low dropout | 200 mV at 100 mA allows direct regulation from single Li-ion or two alkaline cells across full discharge curve. |
| Integrated protection | Current limit (350 mA) + thermal shutdown (140 °C) eliminate need for external fault management circuitry. |
| Capacitor flexibility | Stable with 0.47–10 µF ceramic capacitors (X7R/X5R); no ESR requirements simplify BOM and layout. |
| Small footprint | SOT23-5 package occupies <1.6 mm² PCB area-ideal for compact wearables and miniature medical devices. |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor I/O banks and camera sensor interface logic in GSM/3G feature phones. IC Role / Device Role / Timing Role: Primary 1.8 V LDO supplying core logic voltage with tight tolerance and low noise. Use Value: 1.1 µA IQ extends talk time by minimizing standby drain; 50 dB PSRR isolates digital noise from analog image capture path. |
Use Scenario: Biasing CMOS image sensor and LCD controller in pocket-sized digital cameras. IC Role / Device Role / Timing Role: Dedicated 1.8 V rail generator with fast load transient response for burst-mode sensor readout. Use Value: 200 mV dropout ensures stable 1.8 V output even as 2×AA battery drops to 2.0 V; 150 mA capacity supports simultaneous sensor + display operation. |
| Notebook Subsystems | Remote Controls |
Use Scenario: Supplying USB peripheral controllers and touchpad ICs in ultraportable notebooks. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 1.8 V to low-power interface ICs independent of main system rail. Use Value: Active-high EN enables synchronized power sequencing with host SoC; ±2% accuracy guarantees USB compliance timing margins. |
Use Scenario: Powering IR transmitter LED driver and microcontroller in infrared remote controls. IC Role / Device Role / Timing Role: Always-on 1.8 V regulator with ultra-low IQ to preserve CR2032 battery for >2 years. Use Value: 20 nA shutdown current during button-inactive state eliminates parasitic drain; SOT23-5 fits 8-mm-thick remote housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 1.8 V fixed, 1.6 µA IQ, 600 mV dropout at 250 mA, SOT23-3 (no EN pin) | Lacks enable function and has higher dropout; suitable only for always-on, non-sequenced rails | Choose when board space is critical and enable control is unnecessary; verify 600 mV dropout meets input voltage margin. |
| Torex XC6206P182MR-G | 1.8 V fixed, 1 µA IQ, 160 mV dropout at 100 mA, SOT23-5 with active-low EN | Active-low EN requires inverted logic drive; slightly lower dropout but no thermal shutdown | Prefer for lowest possible dropout where thermal risk is mitigated externally; confirm EN polarity matches host MCU GPIO. |
Compared with MCP1700T-1802E/TT and XC6206P182MR-G, the AAT3221IGV-1.8-T1 uniquely combines active-high EN, integrated thermal shutdown, and 200 mV dropout in a standard SOT23-5-enabling reliable, sequenced power delivery in battery-constrained portable systems without design compromises.
Availability
AAT3221IGV-1.8-T1 is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, notebook subsystems, and remote controls requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for AAT3221IGV-1.8-T1 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
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for wireless, automotive, and industrial markets.
The AAT3221IGV-1.8-T1 belongs to Skyworks' NanoPower™ LDO family, engineered specifically for ultra-low-power portable electronics where extended battery life, small size, and high reliability are mandatory design requirements.
FAQ
What is the maximum input voltage rating for the AAT3221IGV-1.8-T1?
The AAT3221IGV-1.8-T1 has an absolute maximum input voltage of +7 V for pulses ≤30 ms (10% duty cycle), with continuous operation limited to 5.5 V. Exceeding 5.5 V continuously risks exceeding thermal limits or violating recommended operating conditions. The device's internal protection circuits do not guarantee safe operation beyond these ratings, so system design must enforce 5.5 V max under all steady-state conditions.
Does the AAT3221IGV-1.8-T1 require an input capacitor?
The AAT3221IGV-1.8-T1 does not require an input capacitor for basic regulation, but a ≥1 µF ceramic capacitor is strongly recommended when the device is located >2 cm from the power source. This improves line transient response and PSRR. For optimal performance with battery sources, a 1–10 µF X7R ceramic capacitor placed close to the IN pin is advised-no ESR constraints apply.
Can the AAT3221IGV-1.8-T1 operate with a 1.5 V input supply?
No-the AAT3221IGV-1.8-T1 cannot regulate from 1.5 V input because its minimum input voltage is defined by VOUT + VDO. With a 1.8 V output and 200 mV typical dropout, the minimum functional input is ~2.0 V. At 1.5 V, the device enters dropout and cannot maintain 1.8 V output; operation below 2.5 V input is outside recommended conditions per datasheet Table 3.
How does the enable pin behave during power-up?
The AAT3221IGV-1.8-T1 enable pin is active-high and CMOS-compatible. During power-up, the regulator remains off until EN rises above 2.4 V (VEN(H)). If EN is tied to VIN, turn-on occurs after VIN stabilizes above 2.7 V. The device features controlled soft-start behavior-output voltage ramps monotonically without overshoot, as verified in Figure 17–22 of the datasheet.
Is the AAT3221IGV-1.8-T1 RoHS-compliant and halogen-free?
Yes-the AAT3221IGV-1.8-T1 is manufactured in a Pb-free, halogen-free process and complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) standards. Package marking "G" in the suffix denotes green (halogen-free) construction, and the SOT23-5 body uses matte tin lead finish compatible with standard SnPb and lead-free assembly processes.
AAT3221IGV-1.8-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- NanoPower™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 2.5 µA
- Current - Supply (Max):
- -
- PSRR:
- 50dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AAT3221IGV-1.8-T1 FAQ
1.How can I place an order for AAT3221IGV-1.8-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT3221IGV-1.8-T1 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 AAT3221IGV-1.8-T1 reliable?
The price and inventory of AAT3221IGV-1.8-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT3221IGV-1.8-T1 is usually 5 days.
3.What payment methods are accepted for AAT3221IGV-1.8-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT3221IGV-1.8-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT3221IGV-1.8-T1?
AAT3221IGV-1.8-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT3221IGV-1.8-T1 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 AAT3221IGV-1.8-T1?
For technical support, including AAT3221IGV-1.8-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT3221IGV-1.8-T1 requirements.
6.How does Aetrix verify that AAT3221IGV-1.8-T1 is sourced from the original manufacturer or authorized distributors?
All AAT3221IGV-1.8-T1 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 AAT3221IGV-1.8-T1 meets industry standards.
7.What is the process for return or replacement of AAT3221IGV-1.8-T1?
All AAT3221IGV-1.8-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT3221IGV-1.8-T1, 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 AAT3221IGV-1.8-T1 part is unused and in its original packaging.
Return procedure for AAT3221IGV-1.8-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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