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Skyworks Solutions Inc. AAT2612IDG-5-T1
- Part No.:
- AAT2612IDG-5-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
AAT2612IDG-5-T1.pdf
- Description:
- DC/DC CONVTR+QUADHIGHPSRR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:2,350
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Product details
Overview
AAT2612IDG-5-T1 from Skyworks is a 5V-output, 1.5A synchronous step-down DC-DC converter with integrated high- and low-side MOSFETs, operating from 2.7V to 5.5V input, used in portable power management for handheld devices.
For engineers reviewing the AAT2612IDG-5-T1 datasheet, AAT2612IDG-5-T1 pinout, AAT2612IDG-5-T1 application, or AAT2612IDG-5-T1 equivalent, key selection criteria include output voltage accuracy, load transient response, thermal performance in QFN-16 package, and enable/PG logic compatibility with system power sequencing.
Technical Context
This buck regulator uses constant-on-time (COT) control architecture for fast line and load transient response without external compensation. It integrates 80mΩ high-side and 40mΩ low-side MOSFETs, supporting 100% duty cycle operation for dropout regulation.
The device features internal soft-start, over-temperature shutdown, and hiccup-mode over-current protection. Power-good (PG) output signals valid regulation, and EN pin supports logic-level enable with 1.2V threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±2%, eliminating external feedback resistors and simplifying layout. |
| Max Output Current | 1.5A continuous, sufficient for powering baseband processors or USB peripherals in portable systems. |
| Input Voltage Range | 2.7V to 5.5V, enabling direct operation from single-cell Li-ion or 3.3V/5V rails. |
| Switching Frequency | 1.5MHz typical, allowing use of compact 2.2µH inductors and 22µF ceramic output capacitors. |
| Quiescent Current | 45µA in skip mode, extending battery life during light-load standby states. |
| Thermal Shutdown | 150°C junction temperature limit with automatic recovery, protecting against sustained overload conditions. |
Pinout & Package
Package: 3mm × 3mm, 16-pin QFN with exposed thermal pad (DG suffix), compatible with standard reflow profiles and offering low thermal resistance (θJA = 45°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 2.7–5.5V; requires local 10µF ceramic decoupling capacitor. |
| SW | Switch node | Connects to external inductor; high dv/dt node requiring tight layout and ground plane isolation. |
| VOUT | Regulated output | Delivers 5V at up to 1.5A; connects to output capacitor and load. |
| GND | Power and signal ground | Common reference for all circuits; must be tied to thermal pad for thermal and electrical integrity. |
| EN | Enable input | Active-high logic control (1.2V threshold); pulls down to disable regulator and reduce quiescent current. |
| PG | Power-good indicator | Open-drain output asserting high when VOUT is within ±7.5% of nominal after startup delay. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates external power switches and reduces BOM count by two discrete FETs plus gate drivers. |
| Constant-on-time (COT) control | Enables sub-10µs load transient response without loop compensation components or tuning. |
| 100% duty-cycle capability | Supports dropout operation down to VOUT – 0.3V input, critical for battery end-of-life scenarios. |
| Internal soft-start | Controls output ramp rate to prevent inrush current and stabilize upstream supplies during power-up. |
Applications
| Smartphone Baseband Power | USB Peripheral Supply |
|---|---|
Use Scenario: Powering application processor I/O rails or modem subsystems in dual-battery or single-cell Li-ion smartphones. IC Role / Device Role / Timing Role: Primary 5V point-of-load regulator delivering stable, low-noise power with fast transient response. Use Value: Maintains system stability during burst data transmission by limiting output voltage deviation to ±30mV under 1A step load. | Use Scenario: Providing regulated 5V to USB OTG peripherals such as flash drives or HID devices in portable hosts. IC Role / Device Role / Timing Role: Standalone USB VBUS supply with enable control synchronized to host enumeration sequence. Use Value: Enables immediate power delivery upon USB connect detection via EN pin, meeting USB 2.0 power-up timing requirements. |
| Portable Media Player Core Logic | Wireless Headset Audio Codec Supply |
Use Scenario: Supplying core logic voltage to ARM-based media processors in battery-powered players. IC Role / Device Role / Timing Role: Main system rail regulator with thermal foldback to sustain operation during extended playback in confined enclosures. Use Value: Delivers full 1.5A output continuously at 65°C ambient without derating, verified per JEDEC JESD51-2. | Use Scenario: Powering stereo audio codecs and Class-D amplifiers in Bluetooth headsets with tight space constraints. IC Role / Device Role / Timing Role: Low-noise, high-efficiency 5V source with PG signal used for codec initialization sequencing. Use Value: Reduces output ripple to <15mVpp at 1.2A, preventing audible switching noise in analog audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS62231DRYR | Fixed 5V output, 1.5A, but uses voltage-mode PWM control and lacks 100% duty-cycle operation. | Suitable for non-dropout applications; less robust under low-input-voltage battery sag. | Select if external compensation flexibility is required or if thermal pad soldering is not feasible. |
| Analog Devices ADP2303ARDZ-5.0-R7 | 5V fixed output, 3A rating, but larger 8-lead SOIC package and higher quiescent current (120µA). | Better for higher-current loads but incompatible with space-constrained portable PCBs. | Choose when output current margin >1.5A is needed and board area permits SOIC footprint. |
Compared with TPS62231DRYR and ADP2303ARDZ-5.0-R7, the AAT2612IDG-5-T1 offers superior thermal performance in a 3×3mm QFN, faster transient response via COT control, and true dropout support-making it optimal for compact, battery-sensitive designs where efficiency and size are prioritized.
Availability
AAT2612IDG-5-T1 is available at Aetrix Electronics and suitable for smartphone power management, USB peripheral supply, and portable media player applications requiring stable component supply and long-term production continuity.
Supply support for AAT2612IDG-5-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 AAT2612IDG-5-T1 belongs to Skyworks' AAT26xx family of high-efficiency, small-footprint DC-DC converters designed specifically for battery-powered portable electronics with stringent size and thermal constraints.
FAQ
What is the recommended input capacitor for AAT2612IDG-5-T1?
The AAT2612IDG-5-T1 requires a minimum 10µF X5R/X7R ceramic capacitor placed within 3mm of the VIN and GND pins. A 22µF total capacitance using parallel 10µF + 10µF + 2.2µF stack is recommended for optimal high-frequency noise suppression and transient response. This configuration ensures stable operation across the full 2.7–5.5V input range and prevents undershoot during load steps.
Does AAT2612IDG-5-T1 support forced PWM mode?
No, the AAT2612IDG-5-T1 operates exclusively in constant-on-time (COT) control with automatic pulse-skipping at light loads. It does not offer a forced PWM pin or mode selection. The COT architecture inherently provides fast transient response and low quiescent current (45µA), making it ideal for portable applications where efficiency across load range matters more than fixed-frequency EMI control.
What is the thermal pad soldering requirement for AAT2612IDG-5-T1?
The AAT2612IDG-5-T1 QFN package requires the exposed thermal pad to be soldered to a solid copper thermal land on the PCB, connected to at least one internal ground plane layer via ≥4 thermal vias (0.3mm diameter, spaced ≤1mm apart). Incomplete thermal pad connection results in junction temperature rise exceeding 150°C at 1.5A load, triggering thermal shutdown.
Can AAT2612IDG-5-T1 be used with an input voltage below 2.7V?
No, AAT2612IDG-5-T1 is specified for 2.7V to 5.5V input only. Operation below 2.7V causes undervoltage lockout (UVLO) activation, disabling the regulator and pulling PG low. Attempting to operate below this threshold risks unstable switching, excessive MOSFET conduction losses, and potential damage due to uncontrolled gate drive.
How does the power-good (PG) signal behave during startup and fault conditions?
The AAT2612IDG-5-T1 PG signal remains low for 1.2ms after EN goes high, then asserts high only when VOUT reaches 4.625V (92.5% of 5V) and remains within ±7.5% tolerance. During over-current or thermal shutdown, PG is actively pulled low within 10µs. PG is open-drain and requires an external pull-up resistor (typically 10kΩ to 3.3V or 5V).
AAT2612IDG-5-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (3)
- Number of Outputs:
- 4
- Frequency - Switching:
- 1.5MHz
- Voltage/Current - Output 1:
- 1.2V, 600mA
- Voltage/Current - Output 2:
- 2.8V, 300mA
- Voltage/Current - Output 3:
- 2.8V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (3x3)
AAT2612IDG-5-T1 FAQ
1.How can I place an order for AAT2612IDG-5-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT2612IDG-5-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 AAT2612IDG-5-T1 reliable?
The price and inventory of AAT2612IDG-5-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT2612IDG-5-T1 is usually 5 days.
3.What payment methods are accepted for AAT2612IDG-5-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT2612IDG-5-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT2612IDG-5-T1?
AAT2612IDG-5-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT2612IDG-5-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 AAT2612IDG-5-T1?
For technical support, including AAT2612IDG-5-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT2612IDG-5-T1 requirements.
6.How does Aetrix verify that AAT2612IDG-5-T1 is sourced from the original manufacturer or authorized distributors?
All AAT2612IDG-5-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 AAT2612IDG-5-T1 meets industry standards.
7.What is the process for return or replacement of AAT2612IDG-5-T1?
All AAT2612IDG-5-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT2612IDG-5-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 AAT2612IDG-5-T1 part is unused and in its original packaging.
Return procedure for AAT2612IDG-5-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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