aat3120 Datasheet - Analogictech
The AAT3120 is a 3-channel, high-frequency, boost converter designed for white LED backlighting applications.
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📝 Component Overview
The AAT3120 is a 3-channel, high-frequency, boost converter designed for white LED backlighting applications. It operates from a single-cell lithium-ion battery and can deliver up to 25mA per channel. The device features a built-in power MOSFET, a fixed-frequency oscillator, and a soft-start circuit to reduce inrush current during startup.
Key Features and Benefits
- 3-channel boost converter for white LED backlighting
- High-frequency operation for smaller inductor size
- Built-in power MOSFET for high efficiency
- Fixed-frequency oscillator for stable operation
- Soft-start circuit for reduced inrush current
- Up to 25mA per channel output current
- Single-cell lithium-ion battery input
- Low quiescent current for power saving
- Tiny TSOPJW-12 package for compact designs
Typical Applications
- White LED backlighting for mobile devices
- Portable electronics
- LCD displays
- Camera flash
- LED lighting
- Audio devices
📊 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 Voltage | Vin = 3.6V, Iout = 10mA | 4.5V | 5V | 5.5V | V |
| Efficiency | Vin = 3.6V, Iout = 10mA | 80% | 85% | 90% | % |
Package Information
- TSOPJW-12: Tiny package for compact designs
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3120 is designed for high-frequency operation to minimize the size of the external inductor. The device also features a built-in power MOSFET for high efficiency and a soft-start circuit to reduce inrush current during startup. The output voltage can be adjusted using an external resistor divider.
Installation Guidelines
The AAT3120 is available in a tiny TSOPJW-12 package, making it ideal for compact designs. The device should be mounted on a PCB with adequate thermal dissipation to ensure reliable operation.
Operational Notes
The AAT3120 is designed for single-cell lithium-ion battery input and can deliver up to 25mA per channel. The device features a fixed-frequency oscillator for stable operation and a low quiescent current for power saving.