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Skyworks Solutions Inc. AAT3218IGV-2.8-T1
- Part No.:
- AAT3218IGV-2.8-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- -
- Datasheet:
-
AAT3218IGV-2.8-T1.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT23-5
- Quantity:
- Payment:
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Inventory:33,000
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Product details
Overview
AAT3218IGV-2.8-T1 from Skyworks Solutions is a 150mA, 2.8V fixed-output Micropower low-dropout linear regulator in SOT23-5 package, featuring 200mV dropout at full load, ±1.5% output accuracy, 70µA quiescent current, and integrated enable/shutdown control - designed for battery-powered portable electronics requiring fast transient response and low-noise power delivery.
For engineers reviewing the AAT3218IGV-2.8-T1 datasheet, AAT3218IGV-2.8-T1 pinout, AAT3218IGV-2.8-T1 application, or AAT3218IGV-2.8-T1 equivalent, key selection considerations include guaranteed 150mA output under 200mV dropout, factory-trimmed 2.8V output with ±1.5% tolerance over –40°C to +85°C, EN pin logic compatibility (VIH ≥ 1.5V, VIL ≤ 0.6V), 50µVRMS output noise (300Hz–50kHz), and PSRR of 67dB at 1kHz with 10nF BYP capacitor.
Technical Context
The AAT3218IGV-2.8-T1 employs a proprietary CMOS-based LDO architecture with active error amplifier feedback and fast-start control circuitry to achieve sub-15µs enable delay and rapid line/load transient recovery. Its internal PMOS pass transistor enables low dropout and zero reverse-current flow.
It integrates dual protection: thermal shutdown at 145°C with 12°C hysteresis and short-circuit current limiting to 600mA. The dedicated BYP pin accepts a 10nF ceramic capacitor to improve PSRR by >20dB at 1kHz and reduce output noise by ~10%, while enabling soft-start behavior without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1.5% over –40°C to +85°C - ensures stable core voltage for 2.8V I/O rails in Bluetooth headsets and camera modules. |
| Max Output Current | 150mA guaranteed - supports sustained operation of RF front-ends, sensor interfaces, and baseband ICs in portable devices. |
| Dropout Voltage | 200mV typical at 150mA - allows regulation from 3.0V input (e.g., single Li-ion cell) down to 2.8V output with margin. |
| Quiescent Current | 70µA typical - extends battery life in always-on standby modes (e.g., Bluetooth LE advertising intervals). |
| PSRR | 67dB at 1kHz (with 10nF BYP cap) - suppresses switching noise from DC/DC converters feeding the LDO input. |
| Output Noise | 50µVRMS (300Hz–50kHz) - meets low-noise requirements for ADC references and RF synthesizer supplies. |
| Enable Threshold | VEN(H) = 1.5V, VEN(L) = 0.6V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
Pinout & Package
Package: Pb-free, RoHS-compliant SOT23-5 (2.9mm × 1.6mm × 1.1mm), rated for 190°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply connection | Accepts 2.5V to 5.5V input; requires ≥1µF ceramic decoupling close to pin to stabilize line transients. |
| 2 - GND | Power ground reference | Must connect directly to low-impedance ground plane; separates high-current return paths from sensitive BYP node. |
| 3 - EN | Active-high enable control | Pull ≥1.5V to enable; pull ≤0.6V to enter <1µA shutdown - enables system-level power sequencing. |
| 4 - BYP | Reference bypass node | Connect 10nF C0G/NPO capacitor to GND to improve PSRR and reduce output noise; omission increases turn-on speed. |
| 5 - OUT | Regulated output | Delivers 2.8V ±1.5%; requires 2.2µF ceramic capacitor to GND for stability and optimal load transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Load step recovery <50µs (1mA ↔ 150mA); maintains <30mV droop/surge - critical for burst-mode RF ICs. |
| Low-noise regulation | 50µVRMS output noise with 10nF BYP cap - suitable for precision analog and RF signal chain biasing. |
| Thermal + short-circuit protection | Auto-shutdown at 145°C with 12°C hysteresis + 600mA current limit - enables robust operation in sealed enclosures. |
| CMOS-compatible enable | EN pin draws <1µA leakage and supports direct interfacing to 1.8V/3.3V microcontrollers - eliminates external logic. |
| Low-ESR ceramic support | Stable with 0.47µF–10µF X7R/X5R ceramics - avoids costly tantalum capacitors and simplifies BOM. |
Applications
| Bluetooth™ Headsets | Cellular Phone Baseband |
|---|---|
Use Scenario: Powering Bluetooth radio IC and audio codec in compact headset form factor with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary 2.8V LDO supplying RF transceiver and DAC/ADC; enables fast wake-from-standby via EN pin. Use Value: 70µA quiescent current extends talk time; 200mV dropout preserves regulation down to 3.0V battery voltage. | Use Scenario: Local regulation for baseband processor I/O banks during GSM transmit bursts. IC Role / Device Role / Timing Role: Low-noise 2.8V supply decoupled from noisy system DC/DC; handles 100mA load steps within 50µs. Use Value: 67dB PSRR at 1kHz rejects switching noise from PMIC; 50µVRMS noise prevents digital interference in analog sections. |
| Digital Camera Sensor Interface | Notebook Computer Subsystem |
Use Scenario: Biasing CMOS image sensor and ISP core logic in ultra-thin camera modules. IC Role / Device Role / Timing Role: Fixed 2.8V rail for sensor analog front-end and digital interface; enabled only during capture sequence. Use Value: Shutdown current <1µA eliminates standby drain; ±1.5% accuracy ensures consistent sensor gain calibration. | Use Scenario: Powering embedded controller, fingerprint sensor, or WWAN module in space-constrained notebook designs. IC Role / Device Role / Timing Role: Secondary LDO for peripherals requiring clean, sequenced 2.8V supply independent of main CPU rail. Use Value: SOT23-5 footprint minimizes PCB area; fast enable/disable supports dynamic power gating per subsystem. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2802E/TO | 250mV dropout at 250mA, 1.6µA IQ, no BYP pin, TO-92 package | Larger footprint, no PSRR/noise optimization capability | Choose for ultra-low-IQ battery monitoring; avoid where PSRR >60dB or fast transient response is required. |
| Torex XC6206P282MR-G | 300mV dropout at 150mA, 12µA IQ, SOT23-5, no EN pin | No enable control; fixed on-state operation only | Choose for cost-sensitive always-on rails; avoid where system-level power sequencing or shutdown is needed. |
Compared with MCP1700-2802E/TO and XC6206P282MR-G, the AAT3218IGV-2.8-T1 uniquely balances 70µA IQ, 200mV dropout, EN control, and BYP-enabled PSRR/noise optimization - making it the only option among the three supporting both low-quiescent operation and high-AC-performance in a 5-pin SOT23.
Availability
AAT3218IGV-2.8-T1 is available at Aetrix Electronics and suitable for Bluetooth headsets, cellular phone baseband subsystems, and digital camera sensor interfaces requiring stable component supply, long-lifecycle availability, and traceable sourcing for production ramp.
Supply support for AAT3218IGV-2.8-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 AAT3218IGV-2.8-T1 belongs to Skyworks' Micropower LDO family, engineered specifically for portable battery-powered systems demanding ultra-low IQ, fast transient response, and factory-trimmed output accuracy without external resistors.
FAQ
What is the maximum input voltage rating for the AAT3218IGV-2.8-T1?
The absolute maximum input voltage for the AAT3218IGV-2.8-T1 is 6V, as specified in the Absolute Maximum Ratings table. However, for reliable continuous operation at 150mA output and 25°C ambient, the recommended maximum input is 5.5V. At higher temperatures (e.g., 85°C), thermal limits constrain practical VIN to ~3.7V when delivering 150mA - detailed calculations are provided in the Thermal Considerations section of the datasheet for the AAT3218IGV-2.8-T1.
Does the AAT3218IGV-2.8-T1 require an external bypass capacitor on the BYP pin?
The AAT3218IGV-2.8-T1 does not require an external bypass capacitor on the BYP pin for basic operation, but adding a 10nF C0G/NPO ceramic capacitor between BYP and GND improves PSRR by up to 20dB at 1kHz and reduces output noise to 50µVRMS. Omitting the BYP capacitor increases turn-on speed but sacrifices AC performance - the choice depends on whether low noise or fast sequencing is prioritized in the AAT3218IGV-2.8-T1 application.
What is the shutdown current of the AAT3218IGV-2.8-T1 when the EN pin is pulled low?
When the EN pin of the AAT3218IGV-2.8-T1 is pulled to 0V, the device enters low-power shutdown mode with a maximum supply current of 1µA, as confirmed in the Electrical Characteristics table under ISD (Shutdown Current). This ultra-low shutdown current helps preserve battery charge in systems where the AAT3218IGV-2.8-T1 powers infrequently used peripherals like sensors or radios.
Can the AAT3218IGV-2.8-T1 be used with ceramic output capacitors smaller than 2.2µF?
Yes - the AAT3218IGV-2.8-T1 is stable with ceramic output capacitors as small as 0.47µF when output load current is below 10mA. For full 150mA operation, Skyworks specifies 2.2µF as the minimum recommended value to ensure stability and optimal transient response. Using smaller values may degrade load regulation and increase output ripple, especially under dynamic loads - always verify stability per the AAT3218IGV-2.8-T1 datasheet's Capacitor Characteristics section.
Is the AAT3218IGV-2.8-T1 pin-compatible with other variants in the AAT3218 family?
Yes - all AAT3218 variants, including AAT3218IGV-2.8-T1, share identical SOT23-5 pinout and electrical interface. The only differences are factory-programmed output voltages (1.2V, 2.3V, 2.8V, 2.85V, 3.5V) and part-number suffixes. This allows drop-in replacement across voltage options without PCB changes, provided thermal and input voltage constraints are met for the specific AAT3218IGV-2.8-T1 variant.
AAT3218IGV-2.8-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AAT3218IGV-2.8-T1 FAQ
1.How can I place an order for AAT3218IGV-2.8-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT3218IGV-2.8-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 AAT3218IGV-2.8-T1 reliable?
The price and inventory of AAT3218IGV-2.8-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT3218IGV-2.8-T1 is usually 5 days.
3.What payment methods are accepted for AAT3218IGV-2.8-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT3218IGV-2.8-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT3218IGV-2.8-T1?
AAT3218IGV-2.8-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT3218IGV-2.8-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 AAT3218IGV-2.8-T1?
For technical support, including AAT3218IGV-2.8-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT3218IGV-2.8-T1 requirements.
6.How does Aetrix verify that AAT3218IGV-2.8-T1 is sourced from the original manufacturer or authorized distributors?
All AAT3218IGV-2.8-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 AAT3218IGV-2.8-T1 meets industry standards.
7.What is the process for return or replacement of AAT3218IGV-2.8-T1?
All AAT3218IGV-2.8-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT3218IGV-2.8-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 AAT3218IGV-2.8-T1 part is unused and in its original packaging.
Return procedure for AAT3218IGV-2.8-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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