aat3697 Datasheet - Analogictech
The AAT3697 is a highly integrated, high-frequency, synchronous buck converter designed for high-performance applications.
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📝 Component Overview
The AAT3697 is a highly integrated, high-frequency, synchronous buck converter designed for high-performance applications. It operates from an input voltage range of 2.7V to 5.5V and can deliver output currents up to 2A. The device features a fixed-frequency PWM control with an adjustable switching frequency between 200kHz to 2MHz, allowing for optimization of the converter’s efficiency and external component size.
Key Features and Benefits
- High Efficiency Synchronous Buck Converter
- 2.7V to 5.5V Input Voltage Range
- Up to 2A Output Current
- Adjustable Switching Frequency
- Fixed-Frequency PWM Control
- High Performance for Portable Electronics
Typical Applications
- Smartphones and Mobile Devices
- Tablets and Portable Computers
- Wireless Handsets and Accessories
- Digital Cameras and Camcorders
- Portable Audio and Video Players
- Power Banks and Battery Packs
📊 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 Accuracy | VIN = 3.6V, IOUT = 1A | 0.5% | 1% | 1.5% | % |
| Efficiency | VIN = 3.6V, VOUT = 1.8V, IOUT = 1A | 85% | 90% | 92% | % |
Package Information
- TDFN33-12: A 3x3mm, 12-pin package with a 0.5mm pitch
Pin Configuration
- Pin 1: VIN - Input Voltage Pin
- Pin 2: GND - Ground Pin
🔧 Application Guidelines
Design Considerations
When designing with the AAT3697, consider the input and output capacitors for optimal performance. The input capacitor should be placed as close as possible to the device’s input pins, and the output capacitor should be selected based on the desired output voltage ripple and load transient response.
Installation Guidelines
The AAT3697 is available in a TDFN33-12 package. For proper mounting, ensure the device is securely soldered to the PCB, following the recommended soldering guidelines to prevent damage to the device or the board.
Operational Notes
The AAT3697 features an enable pin that allows the device to be turned on or off. When the enable pin is pulled low, the device enters a low-power shutdown mode, significantly reducing the quiescent current and power consumption.