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

Skyworks Solutions Inc. AAT2500IWP-AW-T1

Name: AAT2500IWP-AW-T1
Brand: Skyworks Solutions Inc.
SKU: AAT2500IWP-AW-T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AAT2500IWP-AW-T1

Manufacturer:: Skyworks Solutions Inc.

Category:: Voltage Regulators - Linear + Switching

Package:: 12-WFDFN Exposed Pad

Datasheet:: AAT2500IWP-AW-T1.pdf

Description:: IC REG DL BUCK/LNR SYNC 12TDFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AAT2500IWP-AW-T1 from Skyworks Solutions is a dual-output power management IC integrating a 400mA step-down converter and a 300mA LDO regulator in a single TDFN33-12 package. It operates from 2.7V–5.5V input, delivers fixed or adjustable buck outputs (0.6V–4.0V) and LDO outputs (e.g., 3.3V), and targets battery-powered portable electronics requiring high efficiency and fast transient response.

For engineers reviewing the AAT2500IWP-AW-T1 datasheet, AAT2500IWP-AW-T1 pinout, AAT2500IWP-AW-T1 application, or AAT2500IWP-AW-T1 equivalent, key selection criteria include its 1MHz switching frequency, 25μA no-load quiescent current for the buck stage, ±1.5% LDO output accuracy over temperature, and integrated P/N-channel MOSFETs with 0.4Ω R_DS(ON).

Technical Context

The AAT2500IWP-AW-T1 implements peak-current-mode PWM control with internal compensation for stable operation using low-ESR ceramic output capacitors. Its buck stage supports 100% duty-cycle low-dropout mode, enabling regulation down to V_IN − I_OUT × R_DS(ON)H (typ. 180mV at 400mA). The LDO employs fast-start and active pull-down circuitry for sub-5μs turn-on and rapid shutdown.

Both regulators are thermally protected (140°C shutdown, 15°C hysteresis) and feature independent enable controls (EN and ENLDO), UVLO (2.6V rising), and soft-start. The device uses separate ground returns (PGND for buck, SGND for feedback, GND for LDO) to minimize noise coupling between switching and linear sections.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V to 5.5V - supports single Li-ion/polymer battery operation without external pre-regulation.
Buck Output Current	400mA - sufficient for microprocessor I/O or DSP core rails with up to 96% peak efficiency.
LDO Output Current	300mA - delivers clean, low-noise supply for sensitive analog or RF circuitry.
Switching Frequency	1MHz (±30%) - enables compact 4.7μH inductor and small ceramic capacitors; reduces EMI below critical bands.
LDO Dropout Voltage	400mV at 300mA - ensures regulation under battery discharge; drops to 180mV in 100% duty-cycle mode.
Quiescent Current (Buck)	25μA no-load - extends battery life in standby/sleep modes without sacrificing startup speed.
Output Accuracy (LDO)	±1.5% at 25°C, ±2.5% over −40°C to +85°C - meets tight voltage tolerance requirements for memory and logic rails.

Pinout & Package

Package: 12-pin TDFN33 (3mm × 3mm, 0.5mm pitch), exposed thermal paddle (EP) for enhanced heat dissipation. Rated for −40°C to +85°C ambient operation.

Pin/Terminal	Circuit Role	Design Meaning
PGND	Buck power ground	Return path for LX current; must connect directly to input/output capacitor grounds to minimize switching noise.
LX	Switching node	Connects to inductor; carries high di/dt; requires short, low-inductance PCB trace to reduce EMI.
VP	Buck power stage supply	Bias rail for high-side switch; requires local 1μF ceramic decoupling to PGND for stability.
VCC	Buck bias supply	Connected to VP; powers internal control circuitry; not externally accessible.
VLDO	LDO input	Independent input rail; decoupled with ≥1μF capacitor to support fast load transients.
OUT	LDO output	300mA regulated output; requires ≥2.2μF low-ESR ceramic capacitor to GND for stability and noise suppression.
BYP	LDO reference bypass	Accepts 10nF capacitor to GND to improve PSRR (>67dB @1kHz) and reduce output noise (50μV_RMS).
GND	LDO ground	Signal return for LDO section; isolated from PGND/SGND to prevent switching noise injection.
ENLDO	LDO enable	CMOS-compatible active-high control; >1.5V turns on, <0.6V disables LDO with <1μA shutdown current.
EN	Buck enable	Active-high enable for buck stage; independent of ENLDO for flexible power sequencing.
FB	Buck feedback	Resistive divider input for adjustable versions; internally tied to output for fixed-voltage variants.
SGND	Buck signal ground	Return for FB divider; separates analog sensing from noisy power ground to maintain regulation accuracy.

Key Features

Feature	Design Value
Integrated P/N-MOSFET power stage	0.45Ω / 0.4Ω R_DS(ON) enables high-efficiency 400mA buck conversion without external FETs or drivers.
Fast LDO transient response	Sub-100μs recovery from 300mA load steps; maintains <60mV output deviation due to optimized error amplifier and bypass pin.
100% duty-cycle low-dropout mode	Extends usable battery range by tracking V_IN − I_OUTR_DS(ON)H when input falls near output voltage.
Independent dual-enable control	EN and ENLDO allow precise sequencing-e.g., enable buck first to charge LDO input, then assert ENLDO for clean LDO ramp-up.
Thermal and current protection	Internal over-temperature shutdown (140°C) and cycle-by-cycle current limiting (600mA) prevent damage during overload or poor heatsinking.

Applications

Cellular Phone Power Management	Digital Camera Core Supply
Use Scenario: Dual-rail power for baseband processor (1.2V buck) and camera sensor interface (2.8V LDO) in slim smartphone designs. IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 provides sequenced, low-noise, high-efficiency regulation with independent enable control for optimal power-up timing. Use Value: Eliminates need for two discrete regulators, reducing BOM count and PCB area while maintaining <±2.5% output accuracy across battery discharge.	Use Scenario: Powering image signal processor (ISP) core (1.8V buck) and analog front-end (3.3V LDO) in compact digital cameras. IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 delivers fast load transient response (<100μs) and ultra-low output noise (50μV_RMS) critical for image quality. Use Value: Enables use of cost-effective ceramic capacitors instead of tantalum, lowering system cost and improving reliability under thermal cycling.
Handheld Instrument Sensor Bias	Portable Media Player Audio Rail
Use Scenario: Generating precision 2.5V LDO rail for ADC reference and 1.5V buck rail for microcontroller in battery-operated test equipment. IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 supplies stable, low-drift voltage (22ppm/°C TC) with high PSRR (47dB @10kHz) to reject switching noise. Use Value: Achieves <12-bit effective resolution in ADC measurements without additional filtering or shielding.	Use Scenario: Providing clean 3.3V LDO supply for audio DAC and 1.2V buck supply for SoC in portable music players. IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 integrates bypass capacitor support (BYP pin) to suppress ripple and enhance PSRR for low-distortion audio playback. Use Value: Reduces audible switching noise in headphones by >20dB compared to standard LDOs, eliminating need for post-regulation LC filters.

Cellular Phone Power Management

Digital Camera Core Supply

Use Scenario: Dual-rail power for baseband processor (1.2V buck) and camera sensor interface (2.8V LDO) in slim smartphone designs.

IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 provides sequenced, low-noise, high-efficiency regulation with independent enable control for optimal power-up timing.

Use Value: Eliminates need for two discrete regulators, reducing BOM count and PCB area while maintaining <±2.5% output accuracy across battery discharge.

Use Scenario: Powering image signal processor (ISP) core (1.8V buck) and analog front-end (3.3V LDO) in compact digital cameras.

IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 delivers fast load transient response (<100μs) and ultra-low output noise (50μV_RMS) critical for image quality.

Use Value: Enables use of cost-effective ceramic capacitors instead of tantalum, lowering system cost and improving reliability under thermal cycling.

Handheld Instrument Sensor Bias

Portable Media Player Audio Rail

Use Scenario: Generating precision 2.5V LDO rail for ADC reference and 1.5V buck rail for microcontroller in battery-operated test equipment.

IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 supplies stable, low-drift voltage (22ppm/°C TC) with high PSRR (47dB @10kHz) to reject switching noise.

Use Value: Achieves <12-bit effective resolution in ADC measurements without additional filtering or shielding.

Use Scenario: Providing clean 3.3V LDO supply for audio DAC and 1.2V buck supply for SoC in portable music players.

IC Role / Device Role / Timing Role: AAT2500IWP-AW-T1 integrates bypass capacitor support (BYP pin) to suppress ripple and enhance PSRR for low-distortion audio playback.

Use Value: Reduces audible switching noise in headphones by >20dB compared to standard LDOs, eliminating need for post-regulation LC filters.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS62231DRVR	Single 600mA buck only; no integrated LDO. Requires external LDO for dual-rail solutions.	Suitable where only one regulated rail is needed or where LDO requirements are minimal (e.g., <100mA).	Select if higher buck current (600mA) is required and LDO functionality can be added discretely.
MAX8640YETA+	300mA buck + 300mA LDO, but fixed 1.2V/3.3V outputs only; no adjustable buck option.	Applicable in systems with static voltage requirements and no need for programmable buck output.	Choose when fixed dual-rail voltages match design needs and footprint compatibility with TDFN33 is confirmed.

Compared with TPS62231DRVR and MAX8640YETA+, the AAT2500IWP-AW-T1 uniquely combines adjustable buck output (0.6V–4.0V), independent LDO enable, and 1MHz operation in a single 3×3mm package-enabling compact, flexible, and noise-sensitive dual-rail designs without external components.

Availability

AAT2500IWP-AW-T1 is available at Aetrix Electronics and suitable for cellular phones, digital cameras, handheld instruments, and portable media players requiring stable component supply with full lifecycle support.

Supply support for AAT2500IWP-AW-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, mobile, and power management solutions for wireless infrastructure and portable electronics.

The AAT2500IWP-AW-T1 belongs to Skyworks' Total Power Management IC™ (TPMIC™) family, designed specifically for space-constrained, battery-powered devices needing high-efficiency DC/DC conversion and ultra-low-noise linear regulation in one integrated solution.

FAQ

What is the maximum output current capability of the AAT2500IWP-AW-T1 buck converter?

The AAT2500IWP-AW-T1 buck converter delivers up to 400mA continuous output current with 96% peak efficiency. Its integrated P/N-channel MOSFETs (R_DS(ON)H = 0.45Ω, R_DS(ON)L = 0.4Ω) and peak-current-mode control ensure stable operation under full load across the −40°C to +85°C temperature range. Current limit is set at 600mA for fault protection.

Does the AAT2500IWP-AW-T1 support adjustable output voltage for the buck stage?

Yes, the AAT2500IWP-AW-T1 supports both fixed and adjustable buck outputs. For adjustable operation, an external resistive divider connects to the FB pin to program the output from 0.6V to 2.5V. Fixed-output versions cover 0.6V–4.0V. The FB pin has 600mV threshold accuracy (±3mV) and 0.2μA leakage, ensuring precise regulation.

How does the AAT2500IWP-AW-T1 achieve low output noise on the LDO rail?

The AAT2500IWP-AW-T1 achieves 50μV_RMS output noise (300Hz–50kHz) through its dedicated BYP pin, which accepts a 10nF ceramic capacitor to improve reference stability and PSRR. Combined with fast-start circuitry and optimized error amplifier design, this configuration delivers >67dB PSRR at 1kHz and maintains tight ±1.5% output accuracy under dynamic loads.

What thermal protection features are built into the AAT2500IWP-AW-T1?

The AAT2500IWP-AW-T1 includes over-temperature shutdown at 140°C with 15°C hysteresis, preventing thermal runaway during sustained overload or inadequate PCB heatsinking. Its TDFN33-12 package features an exposed paddle (EP) for direct thermal coupling to the PCB ground plane, achieving θ_JA = 50°C/W and supporting up to 2W power dissipation under proper layout conditions.

Can the buck and LDO sections of the AAT2500IWP-AW-T1 be enabled independently?

Yes, the AAT2500IWP-AW-T1 provides fully independent enable control: EN pin activates the buck converter, and ENLDO pin controls the LDO. Both are CMOS-compatible active-high inputs (turn-on threshold >1.5V, shutdown <0.6V), allowing precise power sequencing-for example, enabling the buck first to charge VLDO, then asserting ENLDO for controlled LDO startup.

AAT2500IWP-AW-T1 Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: TPMIC™

Package/Case:: 12-WFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Topology:: Step-Down (Buck) Synchronous (1), Linear (LDO) (1)

Number of Outputs:: 2

Frequency - Switching:: 1MHz

Voltage/Current - Output 1:: 0.6V ~ 2.5V, 400mA

Voltage/Current - Output 2:: 3.3V, 300mA

Voltage/Current - Output 3:: -

w/LED Driver:: No

w/Supervisor:: No

w/Sequencer:: No

Voltage - Supply:: 2.7V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 12-TDFN (3x3)

AAT2500IWP-AW-T1 FAQ

1.How can I place an order for AAT2500IWP-AW-T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AAT2500IWP-AW-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 AAT2500IWP-AW-T1 reliable?

The price and inventory of AAT2500IWP-AW-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT2500IWP-AW-T1 is usually 5 days.

3.What payment methods are accepted for AAT2500IWP-AW-T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT2500IWP-AW-T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AAT2500IWP-AW-T1?

AAT2500IWP-AW-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AAT2500IWP-AW-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 AAT2500IWP-AW-T1?

For technical support, including AAT2500IWP-AW-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT2500IWP-AW-T1 requirements.

6.How does Aetrix verify that AAT2500IWP-AW-T1 is sourced from the original manufacturer or authorized distributors?

All AAT2500IWP-AW-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 AAT2500IWP-AW-T1 meets industry standards.

7.What is the process for return or replacement of AAT2500IWP-AW-T1?

All AAT2500IWP-AW-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT2500IWP-AW-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 AAT2500IWP-AW-T1 part is unused and in its original packaging.

Return procedure for AAT2500IWP-AW-T1:

1.Submit a request within 90 days.

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

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