aat3112 Datasheet - Analogictech
The AAT3112 is a high-performance, 1.5A, step-up converter designed for handheld devices and other low-power applications.
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📝 Component Overview
The AAT3112 is a high-performance, 1.5A, step-up converter designed for handheld devices and other low-power applications. It operates from a single-cell lithium-ion battery and can deliver output voltages up to 5.5V. The device features a high switching frequency of 1.5MHz, allowing for the use of small external components. The AAT3112 also includes a soft-start feature to prevent excessive inrush current during startup.
Key Features and Benefits
- High efficiency step-up converter
- 1.5A output current
- Input voltage range: 0.9V to 5.5V
- Output voltage range: 2V to 5.5V
- High switching frequency: 1.5MHz
- Soft-start feature for reduced inrush current
- Small package: 3x3mm QFN-16
- Low quiescent current: 50uA
- Over-temperature protection
- Short-circuit protection
Typical Applications
- Handheld devices
- Smartphones
- Tablets
- Laptops
- Portable media players
- Digital cameras
- GPS devices
📊 Complete Technical Specifications
Absolute Maximum Ratings
| Parameter | Value |
|---|---|
| Input Voltage | 6V |
| Output Voltage | 5.5V |
| Operating Temperature | -40°C to 85°C |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Efficiency | VIN = 3.6V, VOUT = 5V, IOUT = 1A | 85% | 90% | 92% | % |
| Output Voltage Accuracy | VIN = 3.6V, VOUT = 5V, IOUT = 1A | -2% | 0% | 2% | % |
Package Information
- QFN-16: 3x3mm, 16-pin QFN package
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3112 is designed for high-performance, low-power applications. To achieve optimal performance, it is recommended to use a high-quality inductor with a low DC resistance and a suitable output capacitor.
Installation Guidelines
The AAT3112 should be mounted on a PCB with a solid ground plane to ensure proper heat dissipation and minimize electromagnetic interference.
Operational Notes
The AAT3112 has a built-in soft-start feature to prevent excessive inrush current during startup. However, it is still recommended to use a suitable input capacitor to filter out any noise or ripple on the input voltage.