aat3141 Datasheet - Analogictech
The AAT3141 is a high-frequency, high-brightness, current-regulated charge pump designed for white LED applications.
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📝 Component Overview
The AAT3141 is a high-frequency, high-brightness, current-regulated charge pump designed for white LED applications. It can drive up to 4 LEDs in series, making it suitable for backlighting and other lighting applications. The device operates at a high switching frequency, allowing the use of small external components. The AAT3141 also features a low dropout current regulator, which minimizes the voltage drop across the device, maximizing efficiency.
Key Features and Benefits
- High-frequency charge pump for high-brightness LED applications
- Drives up to 4 LEDs in series
- Low dropout current regulator for high efficiency
- High switching frequency for small external components
- Suitable for backlighting and other lighting applications
- Constant current regulation for consistent LED brightness
Typical Applications
- White LED backlighting for LCD displays
- High-brightness LED lighting
- Portable electronics
- Automotive lighting
- Industrial lighting
- LED signage
📊 Complete Technical Specifications
Absolute Maximum Ratings
| Parameter | Value |
|---|---|
| Input Voltage | 5.5V |
| Operating Temperature | -40°C to 85°C |
| Storage Temperature | -40°C to 150°C |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Current | VIN = 3.5V, VOUT = 4.2V | 25mA | 30mA | 35mA | mA |
| Efficiency | VIN = 3.5V, VOUT = 4.2V, IOUT = 30mA | 80% | 85% | 90% | % |
Package Information
- TSOPJW-12: 12-lead TSOPJW package
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
When designing with the AAT3141, consider the input voltage range, output current requirements, and the number of LEDs to be driven. The device operates at a high switching frequency, so careful attention should be paid to PCB layout to minimize noise and ensure reliable operation.
Installation Guidelines
The AAT3141 is available in a TSOPJW-12 package. When installing the device, ensure that the PCB is clean and free of debris. The device should be handled by the edges to prevent damage to the pins or the package.
Operational Notes
The AAT3141 is designed to operate within a specific temperature range. Ensure that the device is not exposed to temperatures outside of this range, as this can affect its performance and reliability.