aat3151 Datasheet - Analogictech
The AAT3151 is a high-frequency, high-efficiency, step-up converter designed for backlighting and other applications requiring high output voltage from a...
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📝 Component Overview
The AAT3151 is a high-frequency, high-efficiency, step-up converter designed for backlighting and other applications requiring high output voltage from a single-cell battery. It operates at a fixed frequency of 1MHz and can deliver up to 120mA of output current. The device features automatic shutdown, over-temperature protection, and a built-in soft-start function to minimize inrush current.
Key Features and Benefits
- High-frequency operation at 1MHz
- High-efficiency step-up converter
- Up to 120mA output current
- Automatic shutdown and over-temperature protection
- Built-in soft-start function
- Suitable for single-cell battery applications
- Fixed 5V output voltage
- Available in a 3x3mm TDFN package
Typical Applications
- Backlighting for LCD displays
- Battery-powered devices
- Portable electronics
- Wireless devices
- Audio and video equipment
- Medical devices
- Industrial control systems
📊 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 | V_IN = 3.6V, I_OUT = 100mA | 4.9V | 5V | 5.1V | V |
| Efficiency | V_IN = 3.6V, I_OUT = 100mA | 80% | 85% | 90% | % |
Package Information
- TDFN-12: 3x3mm, 12-pin, thermally enhanced package
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3151 is designed for high-frequency operation and requires a proper layout to ensure stable and efficient performance. The input and output capacitors should be placed as close as possible to the device, and the feedback resistor should be connected between the output and the feedback pin.
Installation Guidelines
The AAT3151 is available in a 3x3mm TDFN package and can be mounted on a PCB using standard SMT techniques. The device should be handled with care to avoid damage to the pins or the package.
Operational Notes
The AAT3151 has a built-in soft-start function to minimize inrush current during startup. The device also features automatic shutdown and over-temperature protection to prevent damage in case of an overload or overheating.