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Skyworks Solutions Inc. AAT3104IJQ-2-T1
- Part No.:
- AAT3104IJQ-2-T1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
AAT3104IJQ-2-T1.pdf
- Description:
- IC LED DRIVER RGLTR DIM 10SC70JW
- Quantity:
- Payment:
- Shipping:
Inventory:216,000
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Product details
Overview
AAT3104IJQ-2-T1 from Skyworks Solutions is a 32-step, four-channel charge-pump white LED driver IC with integrated current sources, operating from 2.7V to 5.5V input and delivering up to 31mA per channel with ±3% matching and ±10% accuracy. It automatically switches between 1x (bypass) and 2x (boost) modes to maintain regulation across varying LED forward voltages in mobile handset backlighting.
For engineers reviewing the AAT3104IJQ-2-T1 datasheet, AAT3104IJQ-2-T1 pinout, AAT3104IJQ-2-T1 application, or AAT3104IJQ-2-T1 equivalent, this device offers S2Cwire single-wire digital control, 1MHz fixed-frequency operation, thermal protection, soft-start, and low-quiescent-current shutdown - all in a 2×2mm SC70JW-10 package.
Technical Context
The AAT3104IJQ-2-T1 implements a dual-mode switched-capacitor charge pump with automatic mode selection based on VIN–VF margin detection (thresholds at 350mV/380mV), enabling efficient operation down to 2.7V input while driving LEDs with VF up to 4.7V. Its 1x mode features ultra-low output impedance for minimal dropout, while 2x mode provides voltage doubling with 150mA max output current capability.
LED brightness is controlled via Skyworks' S2Cwire interface using rising-edge counting on the EN/SET pin - 32 discrete current steps (0.5mA to 31mA) are supported, with latch timeout (500µs) and shutdown timeout (500µs) defined for deterministic state transitions. All four current sources share matched reference architecture, ensuring stable performance over −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, NiMH, and regulated 3.3V/5V rails without external LDO. |
| LED Output Current | Up to 31mA per channel (AAT3104-2 variant) - programmable in 32 linear steps from 0.5mA to 31mA. |
| Current Matching | ±3% - ensures uniform brightness across four independent LED strings in display backlighting. |
| Charge Pump Frequency | 0.6–1.05MHz (typ. 1MHz) - fixed switching frequency minimizes EMI and enables compact 1µF ceramic flying capacitor. |
| Shutdown Current | 1µA max - achieved by holding EN/SET low >500µs; eliminates battery drain in standby. |
| Operating Junction Temp | −40°C to +150°C - rated for handheld consumer electronics with internal thermal protection. |
| Package | SC70JW-10 (2×2mm, 0.4mm pitch) - surface-mount, thermally enhanced 10-pin leadframe package. |
Pinout & Package
SC70JW-10 is a 10-lead, 2×2mm, 0.4mm pitch, thermally optimized leadframe package with exposed pad for improved power dissipation. Pin 1 is marked by dot; top view orientation follows standard JEDEC SC70JW layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D1 | LED1 current source output | Anode connection for first LED; delivers regulated current up to 31mA with <100mV dropout. |
| D2 | LED2 current source output | Anode connection for second LED; matched to D1–D4 within ±3% over temperature and supply. |
| OUT | Charge pump output node | Provides boosted voltage to all current sources; bypassed to GND with ≥1µF ceramic capacitor. |
| C− | Flying capacitor negative terminal | Connects to one side of 1µF flying capacitor (CP); forms charge transfer path with C+. |
| C+ | Flying capacitor positive terminal | Connects to other side of 1µF flying capacitor; used in both 1x and 2x charge pump phases. |
| GND | Analog ground reference | Primary return path for all analog circuitry; must be connected to low-impedance system ground plane. |
| EN/SET | S2Cwire serial control & enable | Single-wire interface: rising edges set current step; low >500µs enters shutdown mode. |
| IN | Main power input | Accepts 2.7–5.5V supply; bypassed to GND with ≥1µF ceramic capacitor for noise suppression. |
| D4 | LED4 current source output | Anode connection for fourth LED; identical electrical specs and matching as D1–D3. |
| D3 | LED3 current source output | Anode connection for third LED; shares same reference and bias network as D1–D4. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic 1x/2x mode switching | Eliminates manual mode selection; maintains regulation when VIN drops below LED VF + dropout. |
| S2Cwire 32-step digital control | Reduces MCU GPIO count and firmware overhead - no PWM, no DAC, no external timing components. |
| ±3% LED current matching | Enables consistent luminance across multi-LED displays without per-channel calibration. |
| 1MHz fixed-frequency operation | Ensures predictable EMI profile and allows use of small, low-ESR 1µF ceramic capacitors. |
| Thermal shutdown & soft-start | Prevents damage during overload or hot-plug events; avoids inrush current spikes at power-up. |
Applications
| Mobile Phone Handsets | Digital Cameras |
|---|---|
Use Scenario: Backlighting for small OLED/LCD main displays and front-facing status indicators. IC Role / Device Role / Timing Role: Four-channel constant-current source with dynamic brightness scaling via S2Cwire. Use Value: Enables uniform, flicker-free illumination across multiple display zones using only one control pin. |
Use Scenario: Flash LED driver and LCD viewfinder backlight in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: High-accuracy current source supporting rapid brightness ramping for preview-to-flash transition. Use Value: Delivers precise 31mA peak current with <190µs startup time, synchronized to camera shutter timing. |
| Cordless Phone Handsets | MP3/PMP Players |
Use Scenario: Keypad and LCD segment backlighting under variable battery voltage (3.0–4.2V). IC Role / Device Role / Timing Role: Adaptive charge-pump regulator maintaining LED current despite declining cell voltage. Use Value: Extends usable battery life by sustaining full brightness until VIN falls below 2.7V cutoff. |
Use Scenario: Status LED and screen backlight in portable audio players with tight PCB area constraints. IC Role / Device Role / Timing Role: Ultra-compact WLED driver minimizing BOM count: only three 1µF ceramics required. Use Value: Reduces total solution footprint to <12mm² while achieving <1µA shutdown current for long standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8646ETE+T | 3-channel, I²C interface, 30mA/channel, 2.7–5.5V, TQFN-16 | Requires two additional I²C lines; supports independent channel dimming but lacks auto 1x/2x mode. | Choose MAX8646ETE+T when multi-channel independence or I²C system integration outweighs pin count and efficiency trade-offs. |
| TPS61165DRVR | Single-channel, boost converter, 40mA, 2.7–6V, 6-pin WSON | Higher efficiency at low VIN but requires external inductor; no multi-LED matching or S2Cwire simplicity. | Choose TPS61165DRVR for single high-brightness LED applications where inductor-based boost is acceptable. |
Compared with MAX8646ETE+T and TPS61165DRVR, the AAT3104IJQ-2-T1 uniquely combines quad-channel matching, single-wire control, and seamless 1x/2x mode switching in a 2×2mm package - optimizing for space-constrained, multi-LED portable devices requiring minimal MCU intervention.
Availability
AAT3104IJQ-2-T1 is available at Aetrix Electronics and suitable for mobile phone handsets, digital cameras, cordless phone handsets, and MP3/PMP players requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AAT3104IJQ-2-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 AAT3104IJQ-2-T1 belongs to Skyworks' WLED driver product line, designed specifically for energy-efficient, space-constrained backlighting in portable consumer electronics with emphasis on ease of integration and thermal robustness.
FAQ
What is the difference between AAT3104IJQ-2-T1 and AAT3104IJQ-1-T1?
The AAT3104IJQ-2-T1 implements a 32-step S2Cwire current control interface (0.5mA to 31mA), whereas the AAT3104IJQ-1-T1 provides only 16 steps (0.5mA to 30mA). Both share identical pinout, package, electrical specs, and 1x/2x charge pump architecture - the sole functional distinction is resolution of brightness control. The AAT3104IJQ-2-T1 marking "4DXYY" confirms its 32-step variant designation per Skyworks ordering information.
Does AAT3104IJQ-2-T1 require an external inductor?
No, the AAT3104IJQ-2-T1 uses a capacitor-based charge pump topology and requires only three external 1µF ceramic capacitors: one flying capacitor (C+ to C−), one input bypass (IN to GND), and one output bypass (OUT to GND). No inductor is needed, eliminating magnetic EMI, size penalty, and cost associated with inductive boost converters.
How does the AAT3104IJQ-2-T1 enter and exit shutdown mode?
The AAT3104IJQ-2-T1 enters shutdown when the EN/SET pin is held low for longer than 500µs (tOFF), reducing input current to ≤1µA. To exit shutdown, a rising edge on EN/SET initiates the first current step (31mA); subsequent rising edges decrement current in 32-step sequence. No external reset or power cycle is required - recovery is fully controlled via S2Cwire timing.
Can AAT3104IJQ-2-T1 drive LEDs with forward voltage above 3.6V?
Yes - the AAT3104IJQ-2-T1 supports LED forward voltages from 2.2V to 4.7V per the datasheet Applications Information section. In 2x mode, it generates up to ~5V at OUT, enabling reliable regulation even with 4.5V VF LEDs at 31mA, provided input voltage remains ≥2.7V and thermal limits are observed.
What is the thermal performance of AAT3104IJQ-2-T1 in continuous 4×31mA operation?
At maximum load (124mA total output current), the AAT3104IJQ-2-T1 dissipates up to 625mW (PD max) with θJA = 160°C/W on FR4 board. With 25°C ambient, junction temperature rise is ~100°C - reaching ~125°C, well within the 150°C TJ max rating. Derating begins above 40°C ambient (−6.25mW/°C), and built-in thermal protection disables outputs if TJ exceeds safe threshold.
AAT3104IJQ-2-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AAT3104IJQ-2-T1 FAQ
1.How can I place an order for AAT3104IJQ-2-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AAT3104IJQ-2-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 AAT3104IJQ-2-T1 reliable?
The price and inventory of AAT3104IJQ-2-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AAT3104IJQ-2-T1 is usually 5 days.
3.What payment methods are accepted for AAT3104IJQ-2-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AAT3104IJQ-2-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AAT3104IJQ-2-T1?
AAT3104IJQ-2-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AAT3104IJQ-2-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 AAT3104IJQ-2-T1?
For technical support, including AAT3104IJQ-2-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AAT3104IJQ-2-T1 requirements.
6.How does Aetrix verify that AAT3104IJQ-2-T1 is sourced from the original manufacturer or authorized distributors?
All AAT3104IJQ-2-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 AAT3104IJQ-2-T1 meets industry standards.
7.What is the process for return or replacement of AAT3104IJQ-2-T1?
All AAT3104IJQ-2-T1 units undergo pre-shipment inspection (PSI). If there is an issue with AAT3104IJQ-2-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 AAT3104IJQ-2-T1 part is unused and in its original packaging.
Return procedure for AAT3104IJQ-2-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AAT3104IJQ-2-T1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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