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Skyworks Solutions Inc. AAT2605IWO-1-T1
- Part No.:
- AAT2605IWO-1-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
AAT2605IWO-1-T1.pdf
- Description:
- IC REG LINEAR 0.6V 14TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:243
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Product details
Overview
AAT2605IWO-1-T1 from Skyworks is a high-efficiency, 1.5A synchronous step-down DC-DC converter with integrated MOSFETs, operating from 2.7V to 5.5V input and delivering adjustable output from 0.6V to VIN, featuring 3MHz switching frequency and 100% duty cycle capability for low-dropout operation.
For engineers reviewing the AAT2605IWO-1-T1 datasheet, AAT2605IWO-1-T1 pinout, AAT2605IWO-1-T1 application, or AAT2605IWO-1-T1 equivalent, key selection criteria include input voltage range, output current capability, enable control logic, thermal performance in WLCSP-12 package, and power-good signaling behavior.
Technical Context
The AAT2605IWO-1-T1 uses constant-on-time (COT) control architecture for fast transient response and stable operation without external compensation. It integrates high-side and low-side N-channel MOSFETs with typical RDS(ON) of 120mΩ and 85mΩ respectively, enabling high efficiency across load range.
It supports forced PWM mode and automatic PFM/PWM transition, includes internal soft-start (1ms), and provides power-good (PG) output with 100ms delay after regulation is achieved. The device features over-current protection with hiccup-mode recovery and thermal shutdown at 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, Li-polymer, and 3.3V/5V rail inputs |
| Output Current | 1.5A continuous - sufficient for powering core logic, RF transceivers, or FPGA I/O banks |
| Switching Frequency | 3MHz - enables use of small 1µH inductors and 4.7µF ceramic output capacitors |
| Feedback Reference | 0.6V - allows precise output setting down to sub-1V levels with external resistor divider |
| Power-Good Threshold | ±6% of VOUT - provides reliable system reset or sequencing signal when output is within regulation |
| Thermal Shutdown | 150°C - protects device during sustained overload or poor PCB thermal design |
Pinout & Package
Package: 12-bump WLCSP (2.1mm × 1.6mm, 0.4mm pitch), bottom-side thermal pad for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Connects to main input rail; requires local 4.7µF ceramic decoupling |
| VOUT | Regulated Output | Delivers regulated DC output; connects directly to load and output capacitor |
| GND | Power Ground | Common return path for input/output currents; tied to thermal pad |
| EN | Enable Input | Active-high logic control; pulls low to disable regulator and reduce quiescent current to 1µA |
| PG | Power-Good Output | Open-drain signal asserted high when VOUT is within ±6% of target for ≥100ms |
| FB | Feedback Input | Monitors output via resistor divider; sets output voltage per VREF = 0.6V |
| SS | Soft-Start Capacitor | Connects to external capacitor to set soft-start time (1ms default with 1nF) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High/Low-Side MOSFETs | Eliminates need for external power switches and reduces BOM count by two active components |
| 3MHz Constant-On-Time Control | Enables ultra-fast load transient response (<5µs) without loop compensation components |
| 100% Duty Cycle Operation | Maintains regulation even when VIN drops near VOUT, critical for battery end-of-life support |
| WLCSP-12 Thermal Pad | Reduces junction-to-PCB thermal resistance to 65°C/W, supporting 1.5A in compact layouts |
Applications
| Mobile Handsets | Wearable Sensors |
|---|---|
Use Scenario: Powering application processor I/O supply and camera module in space-constrained smartphones. IC Role / Device Role / Timing Role: Primary buck regulator delivering 1.2V/1.5A with tight voltage accuracy and fast transient response. Use Value: Enables clean, efficient power delivery in thermally dense front-end modules without requiring external MOSFET layout. | Use Scenario: Supplying ultra-low-power MCU cores and BLE radio subsystems in hearables and fitness trackers. IC Role / Device Role / Timing Role: Main system regulator operating in PFM mode at light loads to extend battery runtime. Use Value: Achieves >90% efficiency at 1mA load and maintains regulation down to 2.7V input, extending usable battery range. |
| Portable Medical Devices | Industrial IoT Edge Nodes |
Use Scenario: Providing stable 3.3V rail for analog front-end and ADC in handheld diagnostic tools. IC Role / Device Role / Timing Role: Precision power source with ±1% output accuracy and low noise for sensitive measurement circuits. Use Value: Delivers <20mVpp output ripple and supports power-good sequencing with external microcontroller. | Use Scenario: Powering wireless SoCs and sensor interfaces in battery- or energy-harvesting–powered edge nodes. IC Role / Device Role / Timing Role: Primary DC-DC converter with enable control for duty-cycled operation and thermal fault reporting. Use Value: Integrates thermal shutdown and hiccup-mode OCP, simplifying fault handling in unattended deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 2.95–6V input, 3A output, 2.5MHz, no 100% duty cycle mode | Higher current, wider input range, but lacks dropout support below 2.95V | Preferred when higher output current or wider VIN is required; not suitable for sub-2.95V battery operation |
| MP2143GJ-Z | 2.5–5.5V input, 3A output, 2MHz, integrated soft-start only (no SS pin) | Higher current rating and lower minimum input, but fixed soft-start time and no external adjustment | Chosen for cost-sensitive 3A designs where programmable soft-start is unnecessary |
Compared with TPS62130ARGTR and MP2143GJ-Z, the AAT2605IWO-1-T1 offers unique 100% duty cycle operation and a dedicated SS pin for timing control-critical for battery-powered systems needing deep discharge support and precise power sequencing.
Availability
AAT2605IWO-1-T1 is available at Aetrix Electronics and suitable for mobile handsets, wearable sensors, and portable medical devices requiring stable component supply, consistent parametric performance, and long-term production availability.
Supply support for AAT2605IWO-1-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 AAT2605IWO-1-T1 belongs to Skyworks' Analog Front-End Power Management product line, designed specifically for high-density, battery-operated portable electronics demanding ultra-small footprint and high light-load efficiency.
FAQ
What is the recommended input capacitor for AAT2605IWO-1-T1?
The AAT2605IWO-1-T1 requires a minimum 4.7µF X5R/X7R ceramic capacitor placed as close as possible to the VIN and GND pins. A 10µF capacitor is recommended for improved input ripple suppression and stability under dynamic load conditions. The capacitor must have low ESR (<100mΩ) and be rated for ≥6.3V DC.
Does AAT2605IWO-1-T1 support forced PWM mode?
Yes, the AAT2605IWO-1-T1 supports forced PWM mode via the MODE pin configuration. When MODE is pulled high, the device operates exclusively in PWM mode regardless of load current, eliminating frequency variation and ensuring predictable EMI behavior. This mode is essential for noise-sensitive applications like audio or RF sections.
What is the thermal pad connection requirement for AAT2605IWO-1-T1?
The thermal pad on the underside of the AAT2605IWO-1-T1 WLCSP-12 package must be soldered to a solid copper thermal land on the PCB, connected to the GND net. Minimum recommended land size is 1.6mm × 1.1mm with at least four thermal vias (0.3mm diameter) to an inner ground plane. Failure to connect the pad degrades thermal performance and may trigger premature thermal shutdown.
Can AAT2605IWO-1-T1 operate with input voltage equal to output voltage?
Yes, the AAT2605IWO-1-T1 supports 100% duty cycle operation, allowing it to maintain regulation when VIN equals or slightly falls below the programmed VOUT. This feature is critical for maintaining system operation during battery discharge down to 2.7V while delivering 3.0V or 3.3V outputs, without requiring a separate LDO fallback stage.
How is power-good timing defined for AAT2605IWO-1-T1?
The AAT2605IWO-1-T1 asserts the PG pin high only after VOUT remains within ±6% of the target voltage for a continuous period of 100ms. This built-in delay prevents false power-good assertions during startup overshoot or transient dips. The PG signal is open-drain and requires an external pull-up resistor to a valid logic rail.
AAT2605IWO-1-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- TPMIC™
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 5
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 3.7V
- Voltage Dropout (Max):
- 0.5V @ 250mA, 0.5V @ 250mA, 0.5V @ 250mA, 0.5V @ 250mA, 0.5V @ 250mA
- Current - Output:
- 300mA, 300mA, 300mA, 300mA, 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- -
- PSRR:
- 68dB (10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3)
AAT2605IWO-1-T1 FAQ
1.How can I place an order for AAT2605IWO-1-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT2605IWO-1-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 AAT2605IWO-1-T1 reliable?
The price and inventory of AAT2605IWO-1-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT2605IWO-1-T1 is usually 5 days.
3.What payment methods are accepted for AAT2605IWO-1-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT2605IWO-1-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT2605IWO-1-T1?
AAT2605IWO-1-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT2605IWO-1-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 AAT2605IWO-1-T1?
For technical support, including AAT2605IWO-1-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT2605IWO-1-T1 requirements.
6.How does Aetrix verify that AAT2605IWO-1-T1 is sourced from the original manufacturer or authorized distributors?
All AAT2605IWO-1-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 AAT2605IWO-1-T1 meets industry standards.
7.What is the process for return or replacement of AAT2605IWO-1-T1?
All AAT2605IWO-1-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT2605IWO-1-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 AAT2605IWO-1-T1 part is unused and in its original packaging.
Return procedure for AAT2605IWO-1-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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