The AAT3222IGV-3.5-T1 is a high-efficiency, low-noise, constant-frequency charge pump DC/DC converter from Advanced Analog Technology, Inc. It's specifically designed to power white LEDs and other low-voltage devices in portable applications. This device features a 1x/1.5x fractional charge pump architecture that maximizes efficiency over a wide input voltage range. The AAT3222IGV-3.5-T1 incorporates built-in soft-start circuitry to limit inrush current and reduce EMI. It also includes short-circuit protection and over-temperature protection for enhanced reliability.

Applications

• White LED backlighting for cellular phones
• PDA displays
• Digital cameras
• MP3 players
• GPS devices

Features

• High Efficiency: Up to 90%
• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: Up to 5.5V
• Constant Frequency Operation: 1MHz
• Low Noise: Internal soft-start and low output ripple
• Short-Circuit Protection
• Over-Temperature Protection
• Small Package: 3x3mm TDFN

Benefits

• Extended Battery Life: High efficiency minimizes power consumption, resulting in longer battery life for portable devices.
• Reduced EMI: Constant frequency operation and soft-start circuitry minimize electromagnetic interference, ensuring stable operation in sensitive electronic environments.
• Enhanced Reliability: Built-in protection features, such as short-circuit and over-temperature protection, protect the device from damage and ensure reliable operation.
• Compact Size: The small 3x3mm TDFN package allows for space-saving designs in compact portable devices.
• Stable Output: Provides a stable and regulated output voltage, ensuring consistent performance of LEDs and other powered components.

Additional Details

The AAT3222IGV-3.5-T1 operates at a fixed switching frequency of 1MHz, which allows for the use of small external components. The device is available in a thermally enhanced 3x3mm TDFN package, providing excellent thermal performance. It is also RoHS compliant.