The AAT3524IGY-2.93-200-T1 is a high-efficiency, constant-current white LED driver from Advanced Analog Technology, Inc. (now Skyworks Solutions, Inc.). It's designed to power up to six series white LEDs from a single Li-Ion battery. The device integrates a high-efficiency boost converter and current regulation circuitry to provide a stable and uniform current to the LEDs. It features a low dropout voltage and a small solution size, making it ideal for portable applications.

Applications:

• Cellular Phones
• Smartphones
• PDAs
• Digital Cameras
• MP3 Players
• LCD Backlighting

Features:

• High Efficiency: Achieves efficiencies up to 85% to extend battery life.
• Constant Current Regulation: Provides a stable and uniform current to the LEDs for consistent brightness.
• Low Dropout Voltage: Operates with a low input-to-output voltage differential.
• Integrated Boost Converter: Eliminates the need for an external boost converter.
• Over-Voltage Protection: Built-in over-voltage protection prevents damage to the LEDs.
• Short-Circuit Protection: Protects the device and the LEDs from short-circuit conditions.
• Small Package: Available in a compact package for space-constrained applications.

Benefits:

• Extended Battery Life: High efficiency minimizes power consumption and extends battery life in portable devices.
• Consistent LED Brightness: Constant current regulation ensures consistent brightness across all LEDs.
• Reduced Component Count: Integrated boost converter reduces the need for external components, saving space and cost.
• Improved System Reliability: Built-in protection features enhance system reliability and prevent damage from fault conditions.
• Compact Solution: Small package size makes it suitable for space-constrained applications.

Additional Details:

The AAT3524IGY-2.93-200-T1 operates from an input voltage range of 2.7V to 5.5V. It can drive up to six series white LEDs with a forward voltage of 2.93V each. The LED current is typically set to 200mA. It is available in a 10-pin TDFN package. The device also features a shutdown mode to minimize power consumption when the LEDs are not in use. The dimming control feature allows for adjusting the LED brightness to conserve power or adjust to ambient light conditions.