aat3123 Datasheet - Analogictech
The AAT3123 is a high efficiency, 1MHz, 150mA/200mA, synchronous, step-down converter. It is designed for applications where high efficiency and small size are...
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📝 Component Overview
The AAT3123 is a high efficiency, 1MHz, 150mA/200mA, synchronous, step-down converter. It is designed for applications where high efficiency and small size are critical. The device can deliver 150mA of output current and has a maximum input voltage of 5.5V. The AAT3123 is available in a 12-pin 4x4mm QFN package.
Key Features and Benefits
- High efficiency, 1MHz, 150mA/200mA, synchronous, step-down converter
- Small 12-pin 4x4mm QFN package
- Maximum input voltage of 5.5V
- Delivers 150mA of output current
- Automatic pulse-skipping for low noise at light loads
- Built-in soft-start for minimal inrush current
- Over-temperature and over-current protection
Typical Applications
- Portable electronics
- Wireless handsets
- PDAs
- Digital cameras
- MP3 players
- Smartphones
📊 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 |
|---|---|---|---|---|---|
| Efficiency | VIN = 3.6V, VOUT = 2.5V, IOUT = 100mA | 85% | 90% | 92% | % |
| Output Voltage Tolerance | VIN = 3.6V, IOUT = 100mA | -2% | 0% | 2% | % |
Package Information
- 12-pin 4x4mm QFN: The AAT3123 is available in a 12-pin 4x4mm QFN package.
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3123 requires a minimum of 2.2uF output capacitance for stable operation. The input capacitor should be at least 1uF. The device has built-in over-temperature and over-current protection.
Installation Guidelines
The AAT3123 should be mounted on a PCB with a solid ground plane. The device requires a minimum of 4 layers for optimal thermal performance.
Operational Notes
The AAT3123 has an automatic pulse-skipping mode for low noise at light loads. The device also has a built-in soft-start for minimal inrush current.