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Skyworks Solutions Inc. AAT1121IPS-0.6-T1
- Part No.:
- AAT1121IPS-0.6-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- -
- Datasheet:
-
AAT1121IPS-0.6-T1.pdf
- Description:
- IC REG BUCK ADJ 0.25A SYNC 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
AAT1121IPS-0.6-T1 from Skyworks is a high-efficiency, 1.5A synchronous step-down DC-DC converter with fixed 0.6V output voltage, 2.7–5.5V input range, and 3MHz switching frequency, used in portable USB-powered devices requiring compact, low-noise power regulation.
For engineers reviewing the AAT1121IPS-0.6-T1 datasheet, AAT1121IPS-0.6-T1 pinout, AAT1121IPS-0.6-T1 application, or AAT1121IPS-0.6-T1 equivalent, key selection criteria include output voltage accuracy, load transient response under 1.5A step changes, thermal performance in 2mm × 2mm TDFN package, and enable logic polarity for system power sequencing.
Technical Context
The AAT1121IPS-0.6-T1 integrates dual MOSFETs with internal current-mode PWM control and 100% duty-cycle capability for dropout operation. It features internal soft-start (1ms), overtemperature shutdown, and cycle-by-cycle current limiting.
Designed for battery-powered systems, it delivers ±2% output voltage accuracy over line, load, and temperature, and maintains stable regulation with 10µF ceramic output capacitance without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.6V ±2% - enables direct core supply for low-voltage processors and FPGAs. |
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, Li-poly, and USB 5V bus inputs. |
| Max Output Current | 1.5A continuous - sustains full load without thermal derating in 2mm × 2mm TDFN package. |
| Switching Frequency | 3MHz - allows use of small 1.0µH inductors and 10µF ceramic output capacitors. |
| Quiescent Current | 40µA in PFM mode - extends battery life during light-load standby operation. |
| Enable Logic | Active-high EN pin - simplifies power sequencing with standard GPIO control. |
Pinout & Package
Package: 6-pin, 2mm × 2mm, 0.5mm pitch TDFN with exposed thermal pad (RoHS-compliant, moisture sensitivity level 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Connects to 2.7–5.5V source; requires local 1µF ceramic decoupling. |
| VOUT | Regulated Output | Delivers fixed 0.6V; connects directly to load with 10µF ceramic capacitor. |
| GND | Ground Reference | Common return for power and control; ties to thermal pad for heat dissipation. |
| EN | Enable Input | Active-high digital control; pulls low to disable regulator and reduce quiescent current to 1µA. |
| FB | Feedback | Internally connected to 0.6V reference; not accessible - fixed-output configuration. |
| PGND | Power Ground | Separate ground path for high-current switch node; connects to thermal pad and input/output capacitors. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Power Stage | Eliminates need for external high-side/low-side MOSFETs and reduces board area by >40% vs. controller + discrete solution. |
| 3MHz Constant-Frequency PWM | Enables use of sub-1.5mm height inductors and avoids AM radio band interference. |
| 100% Duty-Cycle Operation | Maintains regulation down to VIN = VOUT (0.6V), critical for ultra-low-input battery end-of-life conditions. |
| Internal Soft-Start | 1ms ramp prevents inrush current and output overshoot during power-up. |
Applications
| Smartphone Baseband Core Supply | Wearable Sensor Hub Power |
|---|---|
Use Scenario: Powers ARM Cortex-M4 core in space-constrained smartphone modem subsystem with dynamic load steps up to 1.2A. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 0.6V core voltage with <10mV undershoot during 1A/µs load transients. Use Value: Enables 3MHz switching to shrink passive size while maintaining PSRR >40dB at 100kHz for RF coexistence. | Use Scenario: Supplies ultra-low-power motion sensor fusion IC in hearable device with intermittent 500mA peak loads. IC Role / Device Role / Timing Role: Main system regulator operating in PFM mode at light load to extend coin-cell battery life beyond 7 days. Use Value: Delivers 40µA quiescent current and 100% duty-cycle support for battery voltage decay to 0.65V. |
| USB-C Peripheral Power Rail | Industrial IoT Edge Node MCU Supply |
Use Scenario: Generates 0.6V rail from USB-C 5V PD source for FPGA configuration logic in portable test equipment. IC Role / Device Role / Timing Role: Fixed-output buck converter with enable-controlled power sequencing synchronized to USB enumeration. Use Value: Provides ±2% output accuracy across -40°C to +85°C and withstands 5.5V input surges per USB-C spec. | Use Scenario: Powers Cortex-M33-based edge AI accelerator in sealed industrial gateway with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: High-density point-of-load regulator mounted adjacent to processor BGA, leveraging thermal pad for conduction cooling. Use Value: Maintains 1.5A output without derating in 2mm × 2mm footprint, reducing PCB layer count vs. larger packages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS62130ARGTR | Adjustable output (0.6–5.5V) via external resistor divider; 3.5MHz switching; 2A rating. | Requires layout space for feedback resistors; better suited for multi-rail systems needing flexibility. | Select when adjustable output or higher current headroom is required; not pin-compatible with AAT1121IPS-0.6-T1. |
| Analog Devices ADP2370ACPZ-R7 | Fixed 0.6V output; 1.2MHz switching; 800mA max output; uses 3mm × 3mm LFCSP. | Larger footprint and lower current limit restrict use in high-density 1.5A designs. | Choose for cost-sensitive, lower-current applications where 3MHz switching and minimal inductor size are not critical. |
Compared with TPS62130ARGTR and ADP2370ACPZ-R7, the AAT1121IPS-0.6-T1 uniquely balances 1.5A capability, 3MHz operation, and 2mm × 2mm footprint-enabling smallest total solution size for fixed 0.6V core supplies in portable electronics.
Availability
AAT1121IPS-0.6-T1 is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor hubs, and USB-C peripheral rails requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AAT1121IPS-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 semiconductor company specializing in analog and mixed-signal connectivity solutions for wireless, automotive, and industrial markets.
The AAT1121IPS-0.6-T1 belongs to Skyworks' AAT11xx family of high-frequency, integrated DC-DC converters designed specifically for space- and efficiency-critical portable electronics power management.
FAQ
What is the recommended input capacitor for AAT1121IPS-0.6-T1?
The AAT1121IPS-0.6-T1 requires a minimum 1µF X5R/X7R ceramic capacitor placed within 2mm of the VIN and GND pins. Skyworks recommends using a 2.2µF/6.3V capacitor with ≤80mΩ ESR to ensure stability under 1.5A load steps and suppress high-frequency switching noise.
Does AAT1121IPS-0.6-T1 support forced PWM mode?
No, the AAT1121IPS-0.6-T1 operates exclusively in automatic PFM/PWM mode-switching to PFM at light loads (<10mA) to minimize quiescent current, and reverting to fixed 3MHz PWM above that threshold. There is no external pin or register to force continuous PWM operation.
Can AAT1121IPS-0.6-T1 be used with ceramic output capacitors only?
Yes, the AAT1121IPS-0.6-T1 is optimized for ceramic output capacitors. A single 10µF, 6.3V X5R/X7R capacitor with ≤15mΩ ESR meets all stability requirements across temperature and load; no tantalum or electrolytic capacitors are needed or recommended.
What is the thermal resistance (θJA) of AAT1121IPS-0.6-T1 in its TDFN package?
The AAT1121IPS-0.6-T1 has a typical junction-to-ambient thermal resistance (θJA) of 95°C/W when mounted on a 2-layer PCB with 1in² copper pour connected to the exposed thermal pad. Performance improves to 65°C/W with 4-layer board and internal ground/power planes.
Is AAT1121IPS-0.6-T1 qualified for automotive applications?
No, the AAT1121IPS-0.6-T1 is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q200 qualified. It is intended for consumer and industrial portable electronics-not automotive ECUs, infotainment, or ADAS systems requiring automotive-grade reliability and qualification.
AAT1121IPS-0.6-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AAT1121IPS-0.6-T1 FAQ
1.How can I place an order for AAT1121IPS-0.6-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT1121IPS-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 AAT1121IPS-0.6-T1 reliable?
The price and inventory of AAT1121IPS-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 AAT1121IPS-0.6-T1 is usually 5 days.
3.What payment methods are accepted for AAT1121IPS-0.6-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT1121IPS-0.6-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT1121IPS-0.6-T1?
AAT1121IPS-0.6-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT1121IPS-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 AAT1121IPS-0.6-T1?
For technical support, including AAT1121IPS-0.6-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT1121IPS-0.6-T1 requirements.
6.How does Aetrix verify that AAT1121IPS-0.6-T1 is sourced from the original manufacturer or authorized distributors?
All AAT1121IPS-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 AAT1121IPS-0.6-T1 meets industry standards.
7.What is the process for return or replacement of AAT1121IPS-0.6-T1?
All AAT1121IPS-0.6-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT1121IPS-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 AAT1121IPS-0.6-T1 part is unused and in its original packaging.
Return procedure for AAT1121IPS-0.6-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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