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Skyworks Solutions Inc. AAT2148IVN-0.6-T1
- Part No.:
- AAT2148IVN-0.6-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
AAT2148IVN-0.6-T1.pdf
- Description:
- IC REG BUCK ADJ 1A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,002
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Product details
Overview
AAT2148IVN-0.6-T1 from Skyworks Solutions is a low-noise, fast-transient 1A monolithic step-down DC/DC converter optimized for portable power applications. It operates from 2.7V to 5.5V input, delivers adjustable output down to 0.6V, achieves up to 98% efficiency at 1A load, and features 2MHz switching frequency with 37μA no-load quiescent current - enabling compact, high-efficiency core/IO power in space-constrained handheld devices.
For engineers reviewing the AAT2148IVN-0.6-T1 datasheet, AAT2148IVN-0.6-T1 pinout, AAT2148IVN-0.6-T1 application, or AAT2148IVN-0.6-T1 equivalent, key selection criteria include its fixed 0.6V feedback reference, QFN33-16 thermal performance (θJA = 50°C/W), fast load transient response (<150μs soft-start), and integrated over-temperature/current protection for robust microprocessor/DSP supply rails.
Technical Context
The AAT2148IVN-0.6-T1 implements peak current mode control with fixed slope compensation (0.24A/μs for 0.6V version), enabling stable operation up to 50% duty cycle. Its internal 0.6V reference supports external resistor programming of output voltage from 0.6V to VIN, while dual MOSFET power stage features RDS(ON)H = 0.35Ω and RDS(ON)L = 0.30Ω at 25°C.
Control architecture includes UVLO (2.7V rising threshold), 150μs soft-start, <1μA shutdown current, and thermal shutdown at 140°C with 15°C hysteresis. The device maintains low spectral noise via low-noise light-load mode and PWM ripple suppression, critical for noise-sensitive analog/RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion (3.0–4.2V) and USB-powered systems without pre-regulation. |
| Output Voltage Range | 0.6V to VIN - programmable via external resistive divider; 0.6V internal reference enables precise low-voltage core rail generation. |
| Max Output Current | 1A continuous - sufficient for microprocessor cores, DSPs, and FPGA I/O banks in portable electronics. |
| Switching Frequency | 2MHz typical - minimizes external inductor/capacitor size (e.g., 4.7μH + 4.7μF ceramic) and avoids AM radio band interference. |
| No-Load Quiescent Current | 37μA - extends battery life in standby/sleep modes of cellular phones and PDAs. |
| Efficiency | Up to 98% - achieved across load range due to low RDS(ON) switches and optimized gate drive, reducing thermal load in sealed enclosures. |
| Thermal Resistance | θJA = 50°C/W - measured on FR4 board; enables 2W max power dissipation with proper PCB copper pour under exposed paddle. |
Pinout & Package
Package: Pb-free, thermally enhanced QFN33-16 (3mm × 3mm, 0.5mm pitch), -40°C to +85°C operating temperature range. Exposed paddle (EP) must be soldered directly to PGND for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pins 1, 2, 3) | Power ground return | Low-impedance path for high-frequency switch currents; must connect to solid ground plane beneath EP. |
| FB (Pin 4) | Feedback input | Connects to voltage divider output; 0.6V reference sets regulation point; 1μA leakage ensures minimal divider current error. |
| VCC (Pin 9) | Bias supply | Internal circuitry power rail; must tie directly to VIN with local 1μF ceramic capacitor. |
| EN (Pin 7) | Enable control | Active-high logic input; 0.6V low threshold and 1.4V high threshold enable direct MCU GPIO control with <1μA shutdown current. |
| VP (Pins 10, 11, 12) | Power-stage input | High-current VIN connection for switching MOSFETs; requires tight decoupling (4.7–10μF ceramic) near pins. |
| LX (Pins 13, 14, 15) | Switching node | Drain connection of internal P/N-channel MOSFETs; drives external inductor; high dv/dt demands short, low-inductance trace routing. |
| N/C (Pins 5, 6, 8, 16) | No internal connection | Unbonded; may be left floating or tied to PGND for mechanical stability - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise light-load mode | Reduces spectral noise and output ripple during standby, preserving signal integrity in RF/analog sections. |
| 100% duty-cycle dropout operation | Maintains regulation as VIN approaches VOUT by bypassing switching; eliminates brownout during battery sag. |
| Fast load transient response | Stabilizes output within microseconds after 0→1A step load; critical for burst-mode processors and camera flash drivers. |
| Integrated protection suite | Combines over-temperature shutdown (140°C), current limiting (1.3–1.7A), and UVLO to prevent damage during fault conditions. |
| Thermally optimized package | QFN33-16 with exposed paddle dissipates heat directly into PCB ground plane, supporting 2W max power at 85°C ambient. |
Applications
| Cellular Phone Power Management | Digital Camera Core Supply |
|---|---|
Use Scenario: Powers baseband processor core and memory I/O in slim smartphone designs with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 1.2V/1.8V rails with fast transient response to handle CPU burst loads. Use Value: 37μA quiescent current extends standby time; 2MHz switching allows ultra-compact 4.7μH inductor placement near SoC. | Use Scenario: Supplies image sensor and ISP core in compact digital cameras requiring low-noise, high-efficiency conversion from 3.6V battery. IC Role / Device Role / Timing Role: Low-ripple 1.2V/1.8V power source with minimized EMI to prevent image sensor noise coupling. Use Value: Low-noise light-load mode suppresses switching artifacts in analog pixel readout; 98% efficiency reduces thermal impact on lens module. |
| Handheld Instrument DSP Rail | USB-Powered Embedded Controller |
Use Scenario: Provides clean 1.5V/3.3V supply for precision ADCs and real-time DSP in battery-operated test equipment. IC Role / Device Role / Timing Role: High PSRR, low-noise buck converter ensuring stable reference and analog front-end performance. Use Value: 0.6V feedback reference enables accurate resistor-programmed outputs; thermal shutdown protects against enclosure overheating. | Use Scenario: Powers ARM Cortex-M microcontroller and peripherals in USB bus-powered IoT sensors and dongles. IC Role / Device Role / Timing Role: Input-capable 2.7–5.5V buck regulator accepting variable USB voltage (4.75–5.25V) and maintaining 3.3V output. Use Value: 100% duty-cycle operation sustains regulation during USB port voltage droop; <1μA shutdown enables deep-sleep wake-on-USB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS62231DRYT | Fixed 1.8V output only; 2.25MHz switching; 25μA IQ; QFN10 package (2.5×2.5mm). | Not adjustable - unsuitable for multi-rail systems requiring 0.6V–3.3V flexibility. | Select when fixed 1.8V output suffices and board area is constrained; verify thermal derating at 1A in smaller package. |
| Analog Devices ADP2301AUJZ-0.6-R7 | 0.6V adjustable; 1.2MHz switching; 3.5mA IQ; TSOT-6 package; no integrated soft-start. | Higher quiescent current limits battery life; lower frequency increases inductor size; lacks thermal shutdown. | Choose only if cost sensitivity outweighs efficiency/thermal requirements; add external soft-start circuit if needed. |
Compared with TPS62231DRYT and ADP2301AUJZ-0.6-R7, the AAT2148IVN-0.6-T1 uniquely combines 0.6V adjustability, 2MHz operation, 37μA IQ, and full thermal/current protection in a thermally robust QFN33-16 - making it optimal for high-performance portable applications demanding both flexibility and reliability.
Availability
AAT2148IVN-0.6-T1 is available at Aetrix Electronics and suitable for cellular phone power management, digital camera core supply, handheld instrument DSP rails, and USB-powered embedded controllers requiring stable component supply with guaranteed long-term availability.
Supply support for AAT2148IVN-0.6-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 leader in analog semiconductors, specializing in RF, mobile, and precision analog solutions for wireless infrastructure, automotive, and consumer markets.
The AAT2148IVN-0.6-T1 belongs to Skyworks' SwitchReg family of high-efficiency, low-noise DC/DC converters designed specifically for portable electronics requiring fast transient response, minimal footprint, and extended battery life.
FAQ
What is the minimum output voltage supported by the AAT2148IVN-0.6-T1?
The AAT2148IVN-0.6-T1 supports a minimum output voltage of 0.6V, set by its internal feedback reference. This fixed 0.6V threshold enables precise external resistor programming of any higher output voltage from 0.6V up to VIN using the FB pin, making the AAT2148IVN-0.6-T1 ideal for low-voltage microprocessor core rails and advanced SoC power domains.
Does the AAT2148IVN-0.6-T1 require external compensation components?
No, the AAT2148IVN-0.6-T1 features fully internal loop compensation optimized for standard 4.7μH inductors and 4.7μF ceramic output capacitors. Its fixed slope compensation (0.24A/μs) and transconductance amplifier eliminate the need for external compensation networks, simplifying design and reducing BOM count - a key advantage of the AAT2148IVN-0.6-T1 in space-constrained applications.
How does the AAT2148IVN-0.6-T1 handle input voltage dropout conditions?
The AAT2148IVN-0.6-T1 enters 100% duty-cycle dropout operation when VIN approaches VOUT, allowing the output to track VIN minus the RDS(ON)H drop (≈0.35Ω × ILOAD). This maintains regulation during battery voltage sag without shutdown, a critical feature for uninterrupted operation in portable systems - confirmed in the AAT2148IVN-0.6-T1 datasheet's functional description and dropout characterization.
What is the thermal performance of the AAT2148IVN-0.6-T1 in its QFN33-16 package?
The AAT2148IVN-0.6-T1 has a junction-to-ambient thermal resistance (θJA) of 50°C/W when mounted on a standard FR4 PCB with recommended copper pour under the exposed paddle. At 1A load and 3.6V input, typical power dissipation is ~363mW, resulting in a maximum junction temperature of ~103°C at 85°C ambient - well within the -40°C to +85°C operating range specified for the AAT2148IVN-0.6-T1.
Can the AAT2148IVN-0.6-T1 be used in noise-sensitive analog circuits?
Yes, the AAT2148IVN-0.6-T1 incorporates a unique low-noise architecture with separate light-load and PWM modes, reducing both output ripple and spectral noise. Its 2MHz switching frequency places harmonics outside sensitive audio bands, and layout guidelines emphasize quiet FB trace routing - making the AAT2148IVN-0.6-T1 suitable for powering ADCs, sensors, and RF front-ends in mixed-signal systems.
AAT2148IVN-0.6-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
AAT2148IVN-0.6-T1 FAQ
1.How can I place an order for AAT2148IVN-0.6-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT2148IVN-0.6-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 AAT2148IVN-0.6-T1 reliable?
The price and inventory of AAT2148IVN-0.6-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT2148IVN-0.6-T1 is usually 5 days.
3.What payment methods are accepted for AAT2148IVN-0.6-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT2148IVN-0.6-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT2148IVN-0.6-T1?
AAT2148IVN-0.6-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT2148IVN-0.6-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 AAT2148IVN-0.6-T1?
For technical support, including AAT2148IVN-0.6-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT2148IVN-0.6-T1 requirements.
6.How does Aetrix verify that AAT2148IVN-0.6-T1 is sourced from the original manufacturer or authorized distributors?
All AAT2148IVN-0.6-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 AAT2148IVN-0.6-T1 meets industry standards.
7.What is the process for return or replacement of AAT2148IVN-0.6-T1?
All AAT2148IVN-0.6-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT2148IVN-0.6-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 AAT2148IVN-0.6-T1 part is unused and in its original packaging.
Return procedure for AAT2148IVN-0.6-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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