AAT2823 - Advanced Analogic Technologies

AAT2823 (AAT2822 - AAT2825) TFT-LCD DC-DC Converter

The AAT2822-AAT2825 family of integrated panel power solutions provides the regulated voltages required by an active-matrix thin-film transistor (TFT) liquid-crystal display (LCD). The AAT2822 includes a triple-output DC-DC converter, a LED backlight driver, and a VCOM buffer in a 4 mm x 4mm TQFN package. The primary 1.3MHz DC-DC boost converter uses an ultr.

Features

LCD Bias Power
• 2.5V to 5.5V Input Supply Range
• 1.3MHz Fixed Frequency Current-Mode Step-Up Regulator
• Fast Transient Response
• Adjustable Voltage up to 14.5V ▪ ±1% Typical Accuracy
• High Efficiency (93%) @ 50mA Output Current
• Small External Inductor and Capacitors
• Integrated Soft Start and Sequencing of All Rails
• Short-Circuit, Over-Voltage, and Over-Temperature Protection Positive Output, VGH
• Up to 13.2V Input Supply (VDD)
• Adjustable Voltage up to 30V @ 20mA ▪ ±3% Typical Accuracy Negative Output, VGL
• Up to 13.2V Input Supply (VDD)
• Adjustable Voltage down to -30V @ 20mA ▪.