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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Skyworks Solutions Inc. AAT1106ICB-0.6-T1

Name: AAT1106ICB-0.6-T1
Brand: Skyworks Solutions Inc.
SKU: AAT1106ICB-0.6-T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AAT1106ICB-0.6-T1

Manufacturer:: Skyworks Solutions Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: SC-74A, SOT-753

Datasheet:: AAT1106ICB-0.6-T1.pdf

Description:: IC REG BUCK ADJ 800MA SOT23-5

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Product details

Overview

AAT1106ICB-0.6-T1 from Skyworks Solutions is a 600mA, 1.5MHz constant-frequency current-mode PWM step-down DC/DC converter in a TSOT23-5 package. It operates from 2.5V–5.5V input, delivers adjustable output down to 0.6V (with internal 0.6V reference), supports 100% duty-cycle dropout operation, and achieves up to 96% efficiency-optimized for single-cell Li-ion portable systems including smartphones and media players.

For engineers reviewing the AAT1106ICB-0.6-T1 datasheet, AAT1106ICB-0.6-T1 pinout, AAT1106ICB-0.6-T1 application, or AAT1106ICB-0.6-T1 equivalent, key selection criteria include its adaptive slope-compensated current-mode control, <1μA shutdown current, ±15mV feedback voltage tolerance over temperature, R_DS(ON) of 0.3Ω (P-ch) / 0.2Ω (N-ch), and thermal shutdown at 150°C with 15°C hysteresis.

Technical Context

The AAT1106ICB-0.6-T1 implements peak current-mode control with adaptive slope compensation-0.284A/μs below 50% duty cycle and 1.136A/μs above-to ensure stability across wide output voltage ranges (0.6V to V_IN) using low-inductance values (e.g., 2.2μH). Its integrated P-channel high-side and N-channel synchronous rectifier MOSFETs enable high-efficiency regulation without external diodes.

Control loop architecture includes an internal transconductance error amplifier referenced to a precise 0.6V bandgap, programmable via external resistor divider on FB, and non-overlap logic preventing shoot-through. Startup time is ≤100μs, and light-load operation maintains low output ripple without pulse-skipping mode.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5V to 5.5V - supports full range of single-cell Li-ion batteries (2.7V–4.2V nominal + margin).
Output Voltage Range	Adjustable 0.6V to V_IN - enables core supply for modern microprocessors and DSPs requiring sub-1V rails.
Max Output Current	600mA at V_IN = 3.0V - sufficient for baseband processors, camera modules, and RF front-end biasing.
Switching Frequency	1.5MHz (±20%) - allows compact 2.2μH inductors and ≤10μF ceramic output capacitors, minimizing board area.
Feedback Reference	0.600V ±15mV (−40°C to +85°C) - ensures tight output regulation across industrial temperature range.
Shutdown Current	<1μA - extends battery life during system sleep modes in portable devices.
R_DS(ON) (High-Side)	0.30Ω typical at I_LX = 300mA - reduces conduction loss in dropout, improving efficiency at low V_IN/V_OUT ratios.
Thermal Shutdown	150°C threshold with 15°C hysteresis - protects against sustained overload or poor PCB thermal design.

Pinout & Package

Package: TSOT23-5, Pb-free, low-profile surface-mount package (2.9mm × 1.6mm × 0.85mm), rated for −40°C to +85°C ambient operation.

Pin/Terminal	Circuit Role	Design Meaning
1 - EN	Enable control input	Active-high logic interface; floating prohibited; <1μA shutdown current when pulled low.
2 - GND	Power and signal ground reference	Common return path for input capacitor, inductor, and feedback divider; must be low-impedance plane.
3 - LX	Switching node	Connects internal P/N-MOSFET drains to external inductor; high dv/dt node requiring short, direct routing.
4 - IN	Main power input	Accepts 2.5V–5.5V; requires ≥4.7μF low-ESR ceramic decoupling placed adjacent to pin.
5 - FB	Feedback sensing input	Monitors resistive divider output; 0.6V reference sets V_OUT = 0.6V × (1 + R1/R2); bias current <30nA.

Key Features

Feature	Design Value
Adaptive slope compensation	Enables stable operation with 1μH–4.7μH inductors across all duty cycles, reducing BOM count and enabling standardized magnetics.
100% duty-cycle dropout	Extends usable battery life by maintaining regulation as input drops to V_OUT + R_DS(ON) × I_LOAD, critical for Li-ion end-of-discharge.
Synchronous rectification	Eliminates external Schottky diode, reducing conduction loss and thermal stress in portable applications.
Integrated protection	Combines cycle-by-cycle current limiting, thermal shutdown with hysteresis, and output overvoltage lockout (60mV above FB).
Light-load ripple performance	Maintains low output voltage ripple without pulse-frequency modulation, meeting noise-sensitive analog/RF supply requirements.

Applications

Smartphone Baseband Power	Digital Camera Image Sensor Bias
Use Scenario: Powers ARM-based application processor cores requiring tightly regulated 1.2V/1.8V rails from a 3.6V Li-ion source. IC Role / Device Role / Timing Role: Primary step-down regulator delivering continuous 500mA with fast transient response to CPU load changes. Use Value: Adaptive slope compensation ensures stability with small 2.2μH inductors, while 96% peak efficiency extends talk time by >8% versus legacy 1MHz converters.	Use Scenario: Supplies clean, low-noise 2.8V bias to CMOS image sensor analog front-end during video capture. IC Role / Device Role / Timing Role: Low-ripple synchronous buck converter operating in PWM mode under steady load, with <100mVpp output ripple at 600mA. Use Value: <1μA shutdown current enables rapid power gating between frames; 1.5MHz switching avoids interference with sensor readout timing.
MP3 Player DSP Core Supply	Wireless Modem RF Front-End Bias
Use Scenario: Generates 1.5V core voltage for audio DSP in battery-powered portable media players. IC Role / Device Role / Timing Role: Adjustable-output buck converter programmed via 316kΩ/634kΩ resistor divider to deliver precise 1.5V. Use Value: 0.6V internal reference and ±15mV FB tolerance ensure ±1% output accuracy across temperature, preserving audio codec SNR.	Use Scenario: Provides 3.3V bias to PA driver stages and transceiver ICs in 802.11n/Bluetooth combo modules. IC Role / Device Role / Timing Role: High PSRR step-down regulator rejecting noise from shared battery rail and digital switching domains. Use Value: Synchronous topology and low R_DS(ON) minimize thermal rise in thermally constrained module designs; 150°C thermal shutdown prevents field failures.

Smartphone Baseband Power

Digital Camera Image Sensor Bias

Use Scenario: Powers ARM-based application processor cores requiring tightly regulated 1.2V/1.8V rails from a 3.6V Li-ion source.

IC Role / Device Role / Timing Role: Primary step-down regulator delivering continuous 500mA with fast transient response to CPU load changes.

Use Value: Adaptive slope compensation ensures stability with small 2.2μH inductors, while 96% peak efficiency extends talk time by >8% versus legacy 1MHz converters.

Use Scenario: Supplies clean, low-noise 2.8V bias to CMOS image sensor analog front-end during video capture.

IC Role / Device Role / Timing Role: Low-ripple synchronous buck converter operating in PWM mode under steady load, with <100mVpp output ripple at 600mA.

Use Value: <1μA shutdown current enables rapid power gating between frames; 1.5MHz switching avoids interference with sensor readout timing.

MP3 Player DSP Core Supply

Wireless Modem RF Front-End Bias

Use Scenario: Generates 1.5V core voltage for audio DSP in battery-powered portable media players.

IC Role / Device Role / Timing Role: Adjustable-output buck converter programmed via 316kΩ/634kΩ resistor divider to deliver precise 1.5V.

Use Value: 0.6V internal reference and ±15mV FB tolerance ensure ±1% output accuracy across temperature, preserving audio codec SNR.

Use Scenario: Provides 3.3V bias to PA driver stages and transceiver ICs in 802.11n/Bluetooth combo modules.

IC Role / Device Role / Timing Role: High PSRR step-down regulator rejecting noise from shared battery rail and digital switching domains.

Use Value: Synchronous topology and low R_DS(ON) minimize thermal rise in thermally constrained module designs; 150°C thermal shutdown prevents field failures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Texas Instruments TPS62231DRYR	Fixed 1.8V output (non-adjustable); 3MHz switching; 0.65V reference; 350mA max load.	Not suitable for variable-output or >500mA applications; better for space-constrained fixed-rail designs.	Select only if fixed 1.8V output and higher frequency are required; verify thermal derating at 350mA in TSOT23-6.
Analog Devices ADP2303ARMZ-R7	3A output capability; 700kHz switching; external compensation; 0.8V reference; SOIC-8 package.	Over-specified for 600mA use; larger footprint and lower switching frequency increase inductor size.	Prefer for high-current or industrial-temp (−40°C to +125°C) applications where TSOT23-5 thermal limits are exceeded.

Compared with TPS62231DRYR and ADP2303ARMZ-R7, the AAT1106ICB-0.6-T1 uniquely balances ultra-low quiescent current (<1μA), adaptive slope stability with miniature inductors, and 600mA capability in the smallest possible footprint-making it optimal for cost- and size-sensitive portable Li-ion systems.

Availability

AAT1106ICB-0.6-T1 is available at Aetrix Electronics and suitable for smartphone power management, digital camera sensor biasing, and portable media player DSP core supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance.

Supply support for AAT1106ICB-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 high-performance analog semiconductors, specializing in RF, power management, and precision timing solutions for mobile, automotive, and infrastructure markets.

The AAT1106ICB-0.6-T1 belongs to Skyworks' SwitchReg™ family of monolithic DC/DC converters, designed specifically for high-efficiency, low-noise power conversion in space-constrained portable electronics powered by single-cell lithium batteries.

FAQ

What is the minimum output voltage supported by the AAT1106ICB-0.6-T1?

The AAT1106ICB-0.6-T1 supports a minimum output voltage of 0.6V, set by its internal precision bandgap reference. This value is guaranteed at ±15mV over the full −40°C to +85°C operating temperature range, enabling reliable sub-1V core supplies for advanced microprocessors and SoCs.

Does the AAT1106ICB-0.6-T1 require an external diode for operation?

No, the AAT1106ICB-0.6-T1 does not require an external diode. It integrates both a P-channel high-side switch and an N-channel synchronous rectifier, enabling fully synchronous operation with no body-diode conduction loss-critical for achieving up to 96% efficiency at medium-to-heavy loads.

How does the adaptive slope compensation in the AAT1106ICB-0.6-T1 improve design flexibility?

The AAT1106ICB-0.6-T1's adaptive slope compensation automatically adjusts from 0.284A/μs (≤50% duty cycle) to 1.136A/μs (>50% duty cycle), allowing stable operation with inductors as low as 1μH. This enables smaller magnetics, standardized BOMs across multiple output voltages, and improved efficiency versus fixed-slope alternatives.

What is the maximum junction temperature and thermal protection behavior of the AAT1106ICB-0.6-T1?

The AAT1106ICB-0.6-T1 features thermal shutdown at 150°C with 15°C hysteresis. When junction temperature exceeds 150°C, switching halts until temperature falls to ~135°C, then automatic recovery occurs. With θ_JA = 150°C/W in TSOT23-5, max power dissipation at 25°C ambient is 667mW before thermal limiting engages.

Can the AAT1106ICB-0.6-T1 operate in 100% duty cycle, and what is the practical benefit?

Yes, the AAT1106ICB-0.6-T1 supports true 100% duty-cycle operation, allowing V_OUT to track V_IN minus only the P-channel R_DS(ON) drop. This extends usable battery life in Li-ion systems by maintaining regulation down to ~2.6V input for a 2.5V output-delaying system brownout during deep discharge.

AAT1106ICB-0.6-T1 Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: SwitchReg™, TPMIC™

Package/Case:: SC-74A, SOT-753

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:: 800mA

Frequency - Switching:: 1.4MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

AAT1106ICB-0.6-T1 FAQ

1.How can I place an order for AAT1106ICB-0.6-T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AAT1106ICB-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 AAT1106ICB-0.6-T1 reliable?

The price and inventory of AAT1106ICB-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 AAT1106ICB-0.6-T1 is usually 5 days.

3.What payment methods are accepted for AAT1106ICB-0.6-T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT1106ICB-0.6-T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AAT1106ICB-0.6-T1?

AAT1106ICB-0.6-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AAT1106ICB-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 AAT1106ICB-0.6-T1?

For technical support, including AAT1106ICB-0.6-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT1106ICB-0.6-T1 requirements.

6.How does Aetrix verify that AAT1106ICB-0.6-T1 is sourced from the original manufacturer or authorized distributors?

All AAT1106ICB-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 AAT1106ICB-0.6-T1 meets industry standards.

7.What is the process for return or replacement of AAT1106ICB-0.6-T1?

All AAT1106ICB-0.6-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT1106ICB-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 AAT1106ICB-0.6-T1 part is unused and in its original packaging.

Return procedure for AAT1106ICB-0.6-T1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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