The AAT3220IJY-1.8-T1 is a high-efficiency, low-noise charge pump DC-DC converter from Skyworks Solutions Inc. This device is specifically designed for applications requiring a regulated 1.8V output from a battery or other power source. Its small size and minimal external component requirements make it ideal for portable devices and space-constrained applications.

Applications

• Mobile phones
• Smartphones
• Portable media players
• Digital cameras
• Bluetooth headsets
• Wearable devices
• Low-power microcontrollers

Features

• High efficiency: Typically up to 90%
• Low noise operation
• Fixed 1.8V output voltage
• Input voltage range: 2.7V to 5.5V
• Output current up to 120mA
• Short-circuit protection
• Thermal shutdown protection
• Small 6-pin TSOT23 package
• Requires only two external capacitors

Benefits

• Extended Battery Life: High efficiency maximizes battery runtime in portable devices.
• Reduced Noise: Low noise operation minimizes interference with sensitive analog circuitry.
• Simplified Design: Minimal external component requirements simplify the design process and reduce board space.
• Robust Protection: Short-circuit and thermal shutdown protection prevent damage to the device and surrounding components.
• Compact Size: Small package size allows for integration into space-constrained applications.
• Stable Output Voltage: Provides a stable and regulated 1.8V output voltage, ensuring reliable operation of connected devices.

Additional Details

The AAT3220IJY-1.8-T1 operates as a charge pump, switching capacitors to boost or invert the input voltage to achieve the desired 1.8V output. The switching frequency is typically in the MHz range, allowing for the use of small external capacitors. The device incorporates internal compensation to ensure stable operation over a wide range of operating conditions. Refer to the manufacturer's datasheet for detailed electrical characteristics, application circuit examples, and layout recommendations.