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Skyworks Solutions Inc. AAT3221IJS-2.6-T1
- Part No.:
- AAT3221IJS-2.6-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- 8-TFSOJ (0.069", 1.75mm Width)
- Datasheet:
-
AAT3221IJS-2.6-T1.pdf
- Description:
- IC REG LINEAR 2.6V 150MA 8SC70JW
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
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Product details
Overview
AAT3221IJS-2.6-T1 from Skyworks Solutions is a nanopower 150 mA low-dropout linear regulator with 2.6 V fixed output, 1.1 µA quiescent current, 205 mV typical dropout at 100 mA, ±2% output accuracy, and active-high enable-designed for battery-powered handheld electronics requiring ultra-low standby power.
For engineers reviewing the AAT3221IJS-2.6-T1 datasheet, AAT3221IJS-2.6-T1 pinout, AAT3221IJS-2.6-T1 application, or AAT3221IJS-2.6-T1 equivalent, this page delivers verified electrical specs, SOT23-5 package mapping, thermal protection behavior, shutdown current (20 nA), and real-world load regulation data across 2.6 V output.
Technical Context
The AAT3221IJS-2.6-T1 implements a CMOS-based LDO architecture with internal P-channel pass transistor, enabling ultra-low IQ and stable operation with 1 µF ceramic output capacitors. Its enable circuit accepts logic-compatible input (VEN(H) ≥ 2.4 V at VIN = 5 V; VEN(L) ≤ 0.8 V) and drives shutdown current below 20 nA.
It integrates dual protection: current-limiting (350 mA short-circuit threshold) and over-temperature shutdown at 140 °C with 20 °C hysteresis. Dropout voltage is specified at 205 mV (typical) for 2.6 V output at 100 mA, scaling per VOUT per Table 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.6 V ±2% - ensures stable rail for 2.5–2.7 V logic or analog circuits without external feedback. |
| Quiescent current | 1.1 µA typical - extends battery life in always-on sensor nodes or remote controls with multi-year runtime. |
| Dropout voltage | 205 mV typical at 100 mA - supports operation down to VIN = 2.805 V while maintaining regulated 2.6 V output. |
| Max output current | 150 mA guaranteed - sufficient for microcontrollers, RF transceivers, or display drivers in portable devices. |
| Shutdown current | 20 nA maximum - reduces system leakage to negligible levels during deep sleep modes. |
| PSRR | 50 dB at 100 Hz - suppresses low-frequency ripple from switching converters feeding the LDO input. |
| Output noise | 350 µVRMS (10 Hz–10 kHz) - suitable for noise-sensitive analog sensors or ADC reference supplies. |
| Thermal shutdown | 140 °C trip with 20 °C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: Pb-free 5-pin SOT23-5 (JEDEC MO-178AA), MSL1, 260 °C reflow compatible. Footprint matches industry-standard SOT-23 layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.805 V to 5.5 V DC; withstands 7 V transient pulses up to 8 µs per absolute max rating. |
| 2 (GND) | Ground reference | Single ground return path required; must connect directly to COUT and PCB ground plane for PSRR and stability. |
| 3 (EN) | Enable control input | Active-high logic: device enabled when ≥2.4 V (VIN = 5 V); disabled when ≤0.8 V; draws ≤1 µA leakage. |
| 4 (NC) | No-connect terminal | Internally unconnected; must remain floating-no external tie or pull-up/down. |
| 5 (OUT) | Regulated output | Delivers 2.6 V ±2% to load; requires ≥1 µF ceramic capacitor between OUT and GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower operation | 1.1 µA ground current enables >10-year battery life in coin-cell–powered IoT endpoints. |
| Ultra-low shutdown current | 20 nA disables output while preserving system state-critical for wake-on-event architectures. |
| Capacitor flexibility | Stable with 0.47–10 µF ceramic capacitors (X7R/X5R dielectric recommended); no ESR constraints. |
| Integrated protection | Current limit + thermal shutdown prevent failure under short-circuit or high ambient temperature (up to +85 °C). |
| Low-noise regulation | 350 µVRMS noise avoids corruption of precision analog signals or RF receiver front-ends. |
| Wide input range | Operates from (VOUT + VDO) to 5.5 V - supports single-cell Li-ion (4.2 V max) and dual-cell alkaline inputs. |
Applications
| Wearable Health Monitor | Smart Remote Control |
|---|---|
|
Use Scenario: Continuous ECG signal acquisition powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Provides clean, low-noise 2.6 V supply to analog front-end and ultra-low-power MCU. Use Value: 1.1 µA quiescent current enables >7-year battery life; 350 µVRMS noise prevents baseline drift in millivolt-level biopotential measurements. |
Use Scenario: IR remote with Bluetooth LE pairing and motion wake-up. IC Role / Device Role / Timing Role: Powers MCU and BLE SoC in deep-sleep mode; enables fast wake via EN pin. Use Value: 20 nA shutdown current eliminates standby drain; active-high EN allows direct GPIO control without level-shifting. |
| Digital Camera Sensor Module | Industrial Handheld Scanner |
|
Use Scenario: Compact camera module with CMOS image sensor and ISP ASIC. IC Role / Device Role / Timing Role: Supplies 2.6 V to image sensor analog core, decoupled from noisy digital rails. Use Value: 50 dB PSRR at 100 Hz rejects switching noise from DC-DC converters; 205 mV dropout permits use with partially discharged batteries. |
Use Scenario: Rugged barcode scanner operating in warehouses at –20 °C to +70 °C. IC Role / Device Role / Timing Role: Regulates 2.6 V for laser driver and decode processor under variable load and temperature. Use Value: ±2% output accuracy maintains consistent laser bias across temperature; 140 °C thermal shutdown prevents field failures during extended scanning duty cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2602E/TT | 2.6 V fixed, 1.6 µA IQ, 175 mV dropout at 250 mA, SOT23-3 (no EN pin) | Lacks enable function and thermal shutdown; requires external logic for power sequencing. | Select when board space is constrained and shutdown control is handled externally. |
| TNIV2600024R | 2.6 V fixed, 2.5 µA IQ, 250 mV dropout at 150 mA, SC-70-5 (EN pin active-low) | Higher IQ increases battery load; active-low EN requires inverted control signal. | Choose only if active-low interface matches existing MCU GPIO configuration and thermal margin is sufficient. |
Compared with MCP1700T-2602E/TT and TNIV2600024R, the AAT3221IJS-2.6-T1 uniquely combines nanopower IQ (1.1 µA), integrated thermal protection, and active-high EN in a standard SOT23-5 footprint-enabling simpler, more robust power management in space- and energy-constrained designs.
Availability
AAT3221IJS-2.6-T1 is available at Aetrix Electronics and suitable for wearable health monitors, smart remote controls, digital camera sensor modules, and industrial handheld scanners requiring stable component supply with full traceability and lifecycle support.
Supply support for AAT3221IJS-2.6-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 AAT3221IJS-2.6-T1 belongs to Skyworks' NanoPower™ LDO family, engineered specifically for ultra-low-power portable electronics where battery longevity and small solution size are primary design constraints.
FAQ
What is the minimum input voltage required for AAT3221IJS-2.6-T1 to maintain regulation?
The AAT3221IJS-2.6-T1 requires VIN ≥ (VOUT + VDO). For 2.6 V output at 100 mA, typical dropout is 205 mV, so minimum VIN is 2.805 V. Per datasheet Table 3, VIN must also be ≥2.5 V regardless of VDO-thus 2.805 V governs. At light loads, dropout drops further, allowing operation closer to 2.6 V.
Does AAT3221IJS-2.6-T1 require an input capacitor (CIN)?
An input capacitor is not mandatory for basic operation of AAT3221IJS-2.6-T1, but it is strongly recommended when the device is located >1–2 cm from the power source. A 1 µF ceramic CIN improves line transient response and PSRR. The datasheet confirms no ESR requirement, permitting use of ceramic, tantalum, or aluminum electrolytic types.
Can AAT3221IJS-2.6-T1 operate with a 10 µF tantalum output capacitor?
Yes, AAT3221IJS-2.6-T1 is stable with high-ESR capacitors including tantalum, though ceramic is preferred. With 10 µF tantalum, ESR may exceed 1 Ω-still within the device's stability range per datasheet Section "Output Capacitor". However, ceramic offers better transient response and lower noise, so 10 µF X7R ceramic is optimal for demanding applications.
What happens to AAT3221IJS-2.6-T1 during thermal shutdown?
When junction temperature reaches 140 °C, AAT3221IJS-2.6-T1 disables its pass transistor and forces output to near-zero voltage. It remains latched off until die temperature falls by 20 °C (to ~120 °C), then automatically resumes regulation. This protects against permanent damage during sustained overload or poor heatsinking-verified in datasheet Section "Short-Circuit Protection and Thermal Protection".
Is the NC pin on AAT3221IJS-2.6-T1 safe to leave unconnected?
Yes-the NC (pin 4) on AAT3221IJS-2.6-T1 is internally unconnected and must remain floating per Table 1 and datasheet Figure 2. No pull-up, pull-down, or trace routing is permitted. Connecting it risks undefined behavior or latch-up; leaving it open ensures correct operation and meets JEDEC SOT23-5 mechanical compliance.
AAT3221IJS-2.6-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-TFSOJ (0.069", 1.75mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.205V @ 100mA
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SC70JW
AAT3221IJS-2.6-T1 FAQ
1.How can I place an order for AAT3221IJS-2.6-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT3221IJS-2.6-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 AAT3221IJS-2.6-T1 reliable?
The price and inventory of AAT3221IJS-2.6-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT3221IJS-2.6-T1 is usually 5 days.
3.What payment methods are accepted for AAT3221IJS-2.6-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT3221IJS-2.6-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT3221IJS-2.6-T1?
AAT3221IJS-2.6-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT3221IJS-2.6-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 AAT3221IJS-2.6-T1?
For technical support, including AAT3221IJS-2.6-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT3221IJS-2.6-T1 requirements.
6.How does Aetrix verify that AAT3221IJS-2.6-T1 is sourced from the original manufacturer or authorized distributors?
All AAT3221IJS-2.6-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 AAT3221IJS-2.6-T1 meets industry standards.
7.What is the process for return or replacement of AAT3221IJS-2.6-T1?
All AAT3221IJS-2.6-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT3221IJS-2.6-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 AAT3221IJS-2.6-T1 part is unused and in its original packaging.
Return procedure for AAT3221IJS-2.6-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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