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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Chargers

Skyworks Solutions Inc. AAT3693IDH-AA-T1

Name: AAT3693IDH-AA-T1
Brand: Skyworks Solutions Inc.
SKU: AAT3693IDH-AA-T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AAT3693IDH-AA-T1

Manufacturer:: Skyworks Solutions Inc.

Category:: Battery Chargers

Package:: 10-WFDFN Exposed Pad

Datasheet:: AAT3693IDH-AA-T1.pdf

Description:: IC BATT CHG LI-ION 1CELL 10TDFN

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Product details

Overview

AAT3693IDH-AA-T1 from Skyworks Solutions is a highly integrated single-cell Li-ion/polymer battery charger IC supporting USB or AC adapter input, programmable charge current up to 1.6 A, 4.2 V constant output voltage regulation with ±0.5% tolerance, and digitized thermal loop control for dynamic current reduction. It serves as the primary charging controller in compact portable electronics requiring safe, autonomous battery management.

For engineers reviewing the AAT3693IDH-AA-T1 datasheet, AAT3693IDH-AA-T1 pinout, AAT3693IDH-AA-T1 application, or AAT3693IDH-AA-T1 equivalent, key selection considerations include its 10-pin 2.2 mm × 2.2 mm TDFN package, dual open-drain STAT outputs for LED status indication, no-battery detection capability, and factory-programmed 10% termination current default when TERM pin is open.

Technical Context

The AAT3693IDH-AA-T1 implements a fully autonomous CC/CV charging algorithm with preconditioning (trickle), constant-current, constant-voltage, and automatic recharge phases. Its internal N-channel pass transistor features 0.6 Ω R_DS(ON) at 4.6 V VIN and 4.0 V BAT, enabling efficient high-current charging while minimizing thermal stress.

Digital thermal regulation dynamically scales charge current based on junction temperature-entering thermal loop at 115 °C, regulating at 100 °C, and shutting down at 140 °C-while maintaining precise 4.2 V battery voltage regulation across −40 °C to +85 °C ambient operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Charge Current Range	Programmable 100 mA to 1.6 A via external R_SET; enables rapid charging in space-constrained designs without external current-sense amplifiers.
Output Voltage Regulation	4.20 V ±0.5% (4.158–4.242 V); ensures safe full-charge termination for standard Li-ion/polymer cells without overvoltage risk.
Input Voltage Range	4.0 V to 7.5 V; supports direct connection to USB 2.0/3.0 ports (5 V) and common wall adapters (5–7 V).
Thermal Protection	Digital thermal loop active at 115 °C, regulation at 100 °C, shutdown at 140 °C; prevents thermal runaway without external sensors or firmware.
Sleep Mode Current	< 1 μA at V_BAT = 4.25 V or EN = GND; minimizes battery self-discharge during idle or fault conditions.
Package	10-pin TDFN, 2.2 mm × 2.2 mm, MSL1 (260 °C); provides low thermal resistance (θ_JA = 50 °C/W) and high power density for ultra-thin devices.
Status Outputs	Two open-drain STAT pins (STAT1, STAT2); drive LEDs directly to indicate no-battery, charging, charge-complete, and fault states per Table 7.

Pinout & Package

Package: 10-pin thermally enhanced TDFN (2.2 mm × 2.2 mm), exposed paddle (EP) connected to GND for optimal thermal performance and EMI suppression.

Pin/Terminal	Circuit Role	Design Meaning
VIN	Power Input	Accepts 4.0–7.5 V USB/adapter supply; includes under-voltage lockout (UVLO) at 4 V rising edge with 150 mV hysteresis.
STAT1, STAT2	Open-Drain Status Outputs	Drive external LEDs to signal battery presence, charging progress, completion, and faults (OV, OT, timeout) without external logic.
EN	Enable Input	Active-high enable with internal pull-down; allows system-level power sequencing and standby mode control.
GND	Ground Reference	Common return for power, analog sensing, and digital logic; EP must be soldered to PCB ground plane.
CT	Charge Timer Input	Connects to 0.1 μF capacitor to set 3-hour CC+CV timeout; generates 1 Hz fault indicator on STAT1 if trickle timeout occurs.
ISET	Charge Current Programming	Resistor-to-ground sets CC level (100–1600 mA); 2.0 V reference enables accurate current scaling with 1% R_SET.
TERM	Termination Current Programming	Resistor-to-ground programs I_{CH_TERM} (5–40% of I_CC); defaults to 10% if left open.
TS	Battery Temperature Sense	Bi-directional pin for NTC thermistor interface; detects open-circuit (no-battery) and monitors hot/cold thresholds (e.g., 331 mV / 2.39 V for Option AC).
BAT	Battery Output	Direct connection to Li-ion cell anode; integrates reverse-blocking diode and current sensing for single-wire battery interface.

Key Features

Feature	Design Value
Autonomous CC/CV Charging	Four-phase algorithm (preconditioning → CC → CV → auto-recharge) executes without host MCU intervention or software.
Digitized Thermal Loop	Real-time current scaling between 115 °C entry and 100 °C regulation point maintains maximum safe charge rate under varying ambient and power-dissipation conditions.
No-Battery Detection	Dedicated circuitry identifies missing or misconnected batteries and reports via STAT1/STAT2 flash pattern-critical for user feedback in consumer devices.
Integrated Power Path	Internal N-MOSFET with 0.6 Ω R_DS(ON), reverse-blocking diode, and current sensing eliminates need for 3–4 discrete components in typical charger BOM.
Low-Power Sleep Mode	< 1 μA quiescent current when battery is full or EN is low-preserves battery capacity during storage or standby.

Applications

Bluetooth® Headsets	MP3 Players
Use Scenario: Compact wearable audio device powered by a single 3.7 V Li-polymer cell, charged via micro-USB port. IC Role / Device Role: Primary battery charger managing full CC/CV profile, thermal safety, and LED status indication without host processor involvement. Use Value: Enables <1.5-hour full charge time at 1.2 A while preventing overtemperature in sealed plastic enclosure through digital thermal loop regulation.	Use Scenario: Portable media player with removable Li-ion battery and dual-status LED for user charge feedback. IC Role / Device Role: Standalone charger providing no-battery detection, automatic recharge, and fault reporting via STAT1/STAT2 pins. Use Value: Eliminates need for external microcontroller-based charging supervision-reducing BOM cost and firmware development effort.
Digital Still Cameras	Personal Data Assistants (PDAs)
Use Scenario: High-resolution camera with fast-charge requirement and thermal constraints due to image sensor heat generation. IC Role / Device Role: Battery management unit regulating 4.2 V output with ±0.5% accuracy and dynamically throttling charge current when ambient exceeds 60 °C. Use Value: Maintains reliable charging performance across operating environments-from air-conditioned offices to outdoor summer use-without derating.	Use Scenario: Enterprise-grade PDA with long-term reliability requirements and battery health monitoring. IC Role / Device Role: Integrated charger with TS pin support for NTC thermistor, enabling battery temperature validation before initiating charge. Use Value: Prevents charging outside safe thermal range (e.g., below 0 °C or above 45 °C), extending cycle life and ensuring compliance with IEC 62133.

Bluetooth® Headsets

MP3 Players

Use Scenario: Compact wearable audio device powered by a single 3.7 V Li-polymer cell, charged via micro-USB port.

IC Role / Device Role: Primary battery charger managing full CC/CV profile, thermal safety, and LED status indication without host processor involvement.

Use Value: Enables <1.5-hour full charge time at 1.2 A while preventing overtemperature in sealed plastic enclosure through digital thermal loop regulation.

Use Scenario: Portable media player with removable Li-ion battery and dual-status LED for user charge feedback.

IC Role / Device Role: Standalone charger providing no-battery detection, automatic recharge, and fault reporting via STAT1/STAT2 pins.

Use Value: Eliminates need for external microcontroller-based charging supervision-reducing BOM cost and firmware development effort.

Digital Still Cameras

Personal Data Assistants (PDAs)

Use Scenario: High-resolution camera with fast-charge requirement and thermal constraints due to image sensor heat generation.

IC Role / Device Role: Battery management unit regulating 4.2 V output with ±0.5% accuracy and dynamically throttling charge current when ambient exceeds 60 °C.

Use Value: Maintains reliable charging performance across operating environments-from air-conditioned offices to outdoor summer use-without derating.

Use Scenario: Enterprise-grade PDA with long-term reliability requirements and battery health monitoring.

IC Role / Device Role: Integrated charger with TS pin support for NTC thermistor, enabling battery temperature validation before initiating charge.

Use Value: Prevents charging outside safe thermal range (e.g., below 0 °C or above 45 °C), extending cycle life and ensuring compliance with IEC 62133.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Li-ion battery charger applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BQ24075RGTR	TI part uses linear architecture with 1.5 A max current; lacks digitized thermal loop-relies on external thermal foldback or fixed thermal shutdown.	Requires additional thermal design margin and external components for robust high-ambient operation.	Select when legacy TI ecosystem integration or specific I²C configurability is required; not drop-in for AAT3693IDH-AA-T1's thermal loop behavior.
SP6120EMC-L/TR	SiP part integrates MOSFET, but limited to 1.0 A max current and no TS pin-omits battery temperature sensing entirely.	Suitable only for non-temperature-critical applications where size is prioritized over safety certification scope.	Choose for ultra-low-cost, low-power wearables where thermal monitoring is omitted per design specification.

Compared with BQ24075RGTR and SP6120EMC-L/TR, the AAT3693IDH-AA-T1 delivers higher charge current (1.6 A), integrated temperature sensing with configurable thresholds, and autonomous digital thermal regulation-making it preferable for thermally constrained, safety-certified portable designs requiring minimal external components.

Availability

AAT3693IDH-AA-T1 is available at Aetrix Electronics and suitable for Bluetooth headsets, MP3 players, and digital still cameras requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for AAT3693IDH-AA-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 AAT3693IDH-AA-T1 belongs to Skyworks' Battery Management product line, designed specifically for autonomous, high-efficiency charging of single-cell Li-ion/polymer batteries in space- and power-constrained portable electronics.

FAQ

What is the maximum programmable charge current for the AAT3693IDH-AA-T1?

The AAT3693IDH-AA-T1 supports a maximum programmable constant-current charge level of 1.6 A, set by an external resistor connected between the ISET pin and ground. This value is confirmed in the Electrical Specifications table (Table 4) and validated across the full operating temperature range (−40 °C to +85 °C). The AAT3693IDH-AA-T1 achieves this using an internal N-channel pass transistor with 0.6 Ω R_DS(ON), enabling efficient high-current charging without external MOSFETs.

Does the AAT3693IDH-AA-T1 require external components to operate?

Yes-the AAT3693IDH-AA-T1 requires three essential external components: an R_SET resistor (to program charge current), an R_TERM resistor (to set termination current), and a 0.1 μF capacitor on the CT pin (for charge timer function). All other functions-including reverse blocking, current sensing, thermal regulation, and status indication-are fully integrated. The AAT3693IDH-AA-T1 datasheet confirms this minimal BOM requirement in the Functional Description and Application Information sections.

How does the AAT3693IDH-AA-T1 handle battery temperature monitoring?

The AAT3693IDH-AA-T1 uses its TS pin to interface with an external NTC thermistor, supporting both high- and low-temperature threshold detection. For Option AC/AD/AG/AH/AK/AL/BO/BP, thresholds are fixed at 331 mV (hot) and 2.39 V (cold); for Option AA/AB/AE/AF/AI/AJ/BM/BN, they scale as 30% and 60% of VIN. The AAT3693IDH-AA-T1 also detects TS pin open-circuit to indicate no-battery condition, and all thresholds are specified across −40 °C to +85 °C ambient operation.

What happens when the input voltage drops below UVLO during charging with the AAT3693IDH-AA-T1?

When VIN falls below the under-voltage lockout (UVLO) threshold of 4.0 V (rising edge), the AAT3693IDH-AA-T1 suspends charging and enters shutdown mode with < 1 μA sleep current. Upon recovery-when VIN rises above 4.0 V-the AAT3693IDH-AA-T1 performs a full state assessment: it checks BAT voltage, TS pin, and internal timers, then automatically resumes charging in the appropriate phase (preconditioning, CC, or CV) based on battery condition. This behavior is documented in Figure 27 (System Operation Flowchart) and the Application Information section.

Can the AAT3693IDH-AA-T1 be used without connecting the TERM pin?

Yes-the AAT3693IDH-AA-T1 defaults to 10% of the programmed constant-current value as the charge termination threshold when the TERM pin is left open. This is explicitly stated in Table 1 (Signal Descriptions) and Table 4 (Electrical Specifications), and verified in the "Programmable Charge Termination Current" subsection. No external resistor is required for basic operation, though R_TERM can be added to adjust termination to 5%, 20%, 30%, or 40% of I_CC for optimized battery longevity.

AAT3693IDH-AA-T1 Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: -

Package/Case:: 10-WFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Battery Chemistry:: Lithium Ion/Polymer

Number of Cells:: 1

Current - Charging:: Constant - Programmable

Programmable Features:: Current

Fault Protection:: Over Current, Over Temperature, Over Voltage, Short Circuit

Charge Current - Max:: 1.6A

Battery Pack Voltage:: 4.2V

Voltage - Supply (Max):: 7.5V

Interface:: USB

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-TDFN (2.2x2.2)

AAT3693IDH-AA-T1 FAQ

1.How can I place an order for AAT3693IDH-AA-T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AAT3693IDH-AA-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 AAT3693IDH-AA-T1 reliable?

The price and inventory of AAT3693IDH-AA-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT3693IDH-AA-T1 is usually 5 days.

3.What payment methods are accepted for AAT3693IDH-AA-T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT3693IDH-AA-T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AAT3693IDH-AA-T1?

AAT3693IDH-AA-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AAT3693IDH-AA-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 AAT3693IDH-AA-T1?

For technical support, including AAT3693IDH-AA-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT3693IDH-AA-T1 requirements.

6.How does Aetrix verify that AAT3693IDH-AA-T1 is sourced from the original manufacturer or authorized distributors?

All AAT3693IDH-AA-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 AAT3693IDH-AA-T1 meets industry standards.

7.What is the process for return or replacement of AAT3693IDH-AA-T1?

All AAT3693IDH-AA-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT3693IDH-AA-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 AAT3693IDH-AA-T1 part is unused and in its original packaging.

Return procedure for AAT3693IDH-AA-T1:

1.Submit a request within 90 days.

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

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