aat3142 Datasheet - Analogictech
The AAT3142 is a high-frequency, constant-frequency, current-mode step-up converter designed for portable applications.
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📝 Component Overview
The AAT3142 is a high-frequency, constant-frequency, current-mode step-up converter designed for portable applications. It operates from an input voltage range of 2.5V to 5.5V and can deliver an output voltage up to 5.5V. The device features a 1MHz switching frequency, allowing for the use of small external components.
Key Features and Benefits
- High-frequency constant-frequency current-mode step-up converter
- Input voltage range: 2.5V to 5.5V
- Output voltage up to 5.5V
- 1MHz switching frequency
- Small external components
- Constant current limit
- Over-temperature protection
Typical Applications
- Portable electronics
- Cell phones
- PDAs
- Digital cameras
- MP3 players
- Handheld games
📊 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 |
|---|---|---|---|---|---|
| Switching Frequency | Typical | 0.9MHz | 1MHz | 1.1MHz | MHz |
| Output Voltage Accuracy | Typical | -2% | 0% | 2% | % |
Package Information
- TSOPJW-12: 12-pin TSOPJW package
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3142 requires a few external components, including an inductor, a capacitor, and a diode. The inductor value should be chosen based on the desired output voltage and the input voltage range. The capacitor value should be chosen based on the desired output voltage ripple.
Installation Guidelines
The AAT3142 should be mounted on a PCB with adequate thermal dissipation. The device should be placed in a location with good airflow to ensure proper cooling.
Operational Notes
The AAT3142 has a built-in over-temperature protection circuit that will shut down the device if the junction temperature exceeds 150°C. The device also has a constant current limit to prevent damage from over-current conditions.