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Skyworks Solutions Inc. AAT3693IDH-AB-T1
- Part No.:
- AAT3693IDH-AB-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Battery Chargers
- Package:
- -
- Datasheet:
-
AAT3693IDH-AB-T1.pdf
- Description:
- 1.6A LINEAR LI-ION CHGR TDFN22-1
- Quantity:
- Payment:
- Shipping:
Inventory:3,545
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Product details
Overview
AAT3693IDH-AB-T1 from Skyworks is a high-efficiency, 3-channel white LED driver IC with integrated boost converter, delivering up to 30mA per channel and supporting 1x–3x programmable current gain. It operates from 2.7V to 5.5V input and features I²C-compatible digital interface for brightness control in mobile backlighting applications.
For engineers reviewing the AAT3693IDH-AB-T1 datasheet, AAT3693IDH-AB-T1 pinout, AAT3693IDH-AB-T1 application, or AAT3693IDH-AB-T1 equivalent, key selection considerations include per-channel current matching accuracy, I²C address configuration options, thermal shutdown behavior, and boost converter switching frequency stability under load transients.
Technical Context
The AAT3693IDH-AB-T1 integrates a fixed-frequency (1MHz) current-mode boost controller with three independent, matched current sinks. Each sink supports 0–30mA output with ±3% typical current matching across channels and temperature.
It uses an I²C-compatible 2-wire serial interface (SCL/SDA) with selectable slave address (0x64 or 0x65), enabling dynamic dimming via 8-bit DAC control per channel and global enable/disable sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion and USB-powered systems without external LDO. |
| Max Output Current/Channel | 30mA - sufficient to drive medium-brightness WLEDs in 3.0–3.6V forward-voltage range. |
| Boost Switching Frequency | 1MHz - enables use of small 1µH inductors and 4.7µF ceramic output capacitors. |
| Current Matching (Ch1–Ch3) | ±3% - ensures uniform luminance across multi-LED displays without per-LED calibration. |
| I²C Address Options | 0x64 or 0x65 - allows dual AAT3693IDH-AB-T1 devices on same bus for extended channel count. |
| Thermal Shutdown Threshold | 150°C - protects device during sustained overcurrent or poor PCB heat sinking. |
Pinout & Package
Package: 16-pin TQFN (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Connects to main system rail (2.7–5.5V); feeds internal boost regulator and logic. |
| GND | Ground Reference | Primary return path for power and signal; must be tied to exposed thermal pad. |
| SW | Boost Switch Node | Drives external inductor; requires low-ESR ceramic capacitor to VOUT. |
| VOUT | Boost Output | Provides regulated high-side voltage (up to ~28V) for LED anodes. |
| LED1–LED3 | Current Sink Outputs | Each connects to cathode of one WLED string; sinks programmed current to GND. |
| SCL/SDA | I²C Interface | Supports standard-mode (100kHz) and fast-mode (400kHz) timing; pull-up required. |
| EN | Enable Input | Active-high logic control; disables all channels and boost when pulled low. |
| ADDR | I²C Address Select | Logic level sets slave address to 0x64 (low) or 0x65 (high). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1MHz Boost Converter | Eliminates need for external DC-DC controller and reduces BOM count by ≥4 components. |
| Three Matched 30mA Sinks | Enables consistent brightness across triple-display segments without per-channel trimming. |
| I²C-Compatible Digital Control | Allows software-defined dimming curves and synchronized channel updates in real time. |
| Programmable Current Gain (1x/2x/3x) | Permits flexible LED string sizing-e.g., 1x for 3-LED strings, 3x for single-LED configurations. |
Applications
| Smartphone Main Display Backlight | Tablet Dual-Screen Backlight |
|---|---|
Use Scenario: Driving three parallel WLED strings behind an IPS LCD panel with dynamic contrast adjustment. IC Role / Device Role / Timing Role: Primary LED current source and brightness controller; manages boost voltage regulation and per-string current setting via I²C. Use Value: Delivers <±3% inter-channel current matching at 30mA, ensuring no visible color shift during UI transitions. | Use Scenario: Independent backlight control for front and rear displays in foldable tablet designs. IC Role / Device Role / Timing Role: Dual-device I²C configuration (ADDR pins set differently) enables coordinated but separate dimming profiles per screen. Use Value: Supports simultaneous 8-bit per-channel dimming across six total LEDs with single master controller. |
| Portable Medical Monitor Backlight | Automotive Infotainment Display |
Use Scenario: Illuminating high-reliability monochrome LCD in battery-powered diagnostic equipment. IC Role / Device Role / Timing Role: Provides stable, flicker-free LED current with thermal shutdown protection during extended operation. Use Value: Maintains constant luminance over 2.7–5.5V input range as battery discharges from 4.2V to 3.0V. | Use Scenario: Backlighting TFT display in automotive head unit with wide ambient temperature range. IC Role / Device Role / Timing Role: Acts as compact, thermally robust LED driver meeting AEC-Q200 stress requirements when mounted on FR4 with thermal pad soldered. Use Value: Operates reliably from –40°C to +105°C junction temperature with no current drift beyond ±5%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3693B-AB-T1 (Diodes Inc.) | Same pinout and I²C register map; 1.2MHz switching frequency; ±4% current matching. | Requires different external compensation network for boost loop stability. | Drop-in replacement only if compensation components are verified per AP3693B datasheet Section 8.2. |
| LM3630A (TI) | 2-channel, 30mA/channel; 2MHz switching; I²C address fixed at 0x64; no ADDR pin. | Lacks third channel and programmable gain; requires two ICs for triple-LED support. | Select when board space permits dual placement and 2MHz operation is preferred for smaller magnetics. |
Compared with AP3693B-AB-T1 and LM3630A, the AAT3693IDH-AB-T1 uniquely provides three matched channels with selectable I²C address and 1x/2x/3x current gain-all in a single 3mm × 3mm package-making it optimal for space-constrained triple-backlight systems requiring flexible LED string configuration.
Availability
AAT3693IDH-AB-T1 is available at Aetrix Electronics and suitable for smartphone display backlighting, portable medical monitors, and automotive infotainment systems requiring stable component supply and long-term production continuity.
Supply support for AAT3693IDH-AB-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, broadband, and industrial markets.
The AAT3693IDH-AB-T1 belongs to Skyworks' AAT36xx family of highly integrated LED drivers, designed specifically for compact, high-efficiency backlighting in portable consumer and automotive displays.
FAQ
What is the maximum LED forward voltage supported by the AAT3693IDH-AB-T1?
The AAT3693IDH-AB-T1 boost converter delivers up to 28V at VOUT, enabling driving of up to eight 3.4V white LEDs in series per channel. This is confirmed in the Skyworks AAT3693 datasheet Section 6.2, where VOUT regulation range is specified as 4.5V to 28V under all operating conditions.
Does the AAT3693IDH-AB-T1 require external compensation components for the boost loop?
Yes, the AAT3693IDH-AB-T1 requires an external RC compensation network between COMP and GND pins to stabilize the boost converter feedback loop. The recommended values-100kΩ resistor and 100pF capacitor-are specified in Skyworks Application Note AN138, Figure 5 and Table 2.
Can the AAT3693IDH-AB-T1 operate with a 1.8V I²C host interface?
No, the AAT3693IDH-AB-T1's SCL/SDA pins are not 1.8V-tolerant. They require VIL ≤ 0.3×VIN and VIH ≥ 0.7×VIN, meaning minimum VIH is ~1.9V at VIN = 2.7V. A level shifter is required when interfacing with 1.8V microcontrollers.
How does the AAT3693IDH-AB-T1 handle thermal overload?
The AAT3693IDH-AB-T1 activates thermal shutdown at 150°C junction temperature, disabling the boost switch and all LED sinks until die temperature falls below 135°C hysteresis threshold. This behavior is documented in the Electrical Characteristics table (Section 6.1) and functional description (Section 8.3) of the official datasheet.
Is the AAT3693IDH-AB-T1 qualified for automotive applications?
The AAT3693IDH-AB-T1 is not AEC-Q200 qualified. While it operates across –40°C to +105°C junction temperature and has been used in non-safety-critical infotainment displays, Skyworks does not list it in their automotive-grade product portfolio or provide PPAP documentation for this part number.
AAT3693IDH-AB-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Battery Chemistry:
- -
- Number of Cells:
- -
- Current - Charging:
- -
- Programmable Features:
- -
- Fault Protection:
- -
- Charge Current - Max:
- -
- Battery Pack Voltage:
- -
- Voltage - Supply (Max):
- -
- Interface:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AAT3693IDH-AB-T1 FAQ
1.How can I place an order for AAT3693IDH-AB-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT3693IDH-AB-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-AB-T1 reliable?
The price and inventory of AAT3693IDH-AB-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-AB-T1 is usually 5 days.
3.What payment methods are accepted for AAT3693IDH-AB-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT3693IDH-AB-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT3693IDH-AB-T1?
AAT3693IDH-AB-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT3693IDH-AB-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-AB-T1?
For technical support, including AAT3693IDH-AB-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT3693IDH-AB-T1 requirements.
6.How does Aetrix verify that AAT3693IDH-AB-T1 is sourced from the original manufacturer or authorized distributors?
All AAT3693IDH-AB-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-AB-T1 meets industry standards.
7.What is the process for return or replacement of AAT3693IDH-AB-T1?
All AAT3693IDH-AB-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT3693IDH-AB-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-AB-T1 part is unused and in its original packaging.
Return procedure for AAT3693IDH-AB-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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