aat3122 Datasheet - Analogdevices
The AAT3122 is a high efficiency, synchronous, step-up converter designed for battery-powered applications.
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📝 Component Overview
The AAT3122 is a high efficiency, synchronous, step-up converter designed for battery-powered applications. It operates from an input voltage range of 0.8V to 5.5V and can deliver an output voltage up to 5V. The device features a built-in power switch, synchronous rectifier, and a programmable soft-start function to reduce inrush current during startup.
Key Features and Benefits
- High efficiency synchronous step-up converter
- Input voltage range: 0.8V to 5.5V
- Output voltage up to 5V
- Built-in power switch and synchronous rectifier
- Programmable soft-start function
- Low quiescent current: 25μA
- Automatic shutdown for low battery condition
Typical Applications
- Battery-powered devices
- Portable electronics
- Wireless handsets
- PDAs and handheld computers
- Digital cameras
- MP3 players
📊 Complete Technical Specifications
Absolute Maximum Ratings
| Parameter | Value |
|---|---|
| Input Voltage | 6V |
| Operating Temperature | -40°C to 85°C |
| Storage Temperature | -40°C to 150°C |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage Accuracy | VIN = 3.6V, IOUT = 100mA | 4.9V | 5V | 5.1V | V |
| Efficiency | VIN = 3.6V, VOUT = 5V, IOUT = 100mA | 80% | 85% | 90% | % |
Package Information
- TSOPJW-12: 12-pin, thin small outline package
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3122 requires careful selection of the input and output capacitors to ensure stable operation. The input capacitor should be placed as close as possible to the VIN pin, and the output capacitor should be placed close to the VOUT pin.
Installation Guidelines
The AAT3122 is a surface mount device and should be mounted on a printed circuit board with adequate thermal dissipation. The device should be handled with care to avoid damage to the pins or the package.
Operational Notes
The AAT3122 has a built-in thermal shutdown feature that will disable the device if the junction temperature exceeds 150°C. The device will automatically restart when the junction temperature falls below 120°C.