AAT2823

AAT2822/23/24/25 www.DataSheet4U.com PRODUCT DATASHEET SystemPowerTM TFT-LCD DC-DC Converter with WLED Driver and VCOM Buffer 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 ▪ ± 3% Typical Accuracy WLED Driver Input Voltage Range: 2.5V to 25V Maximum Continuous Output: ▪ 12V @ 260mA ▪ 28V @ 50mA Panel sizes from 5" – 10" ▪ 5.0" 3S5P ▪ 5.6" 3S6P ▪ 7.0" 3S9P ▪ 8.0" 3S10P/11P ▪ 10" 3S13P Constant LED Current with 6% Accuracy PWM Dimming Control ▪ Up to 1kHz 1.3MHz Switching Fixed Frequency ▪ Up to 90% Efficiency VCOM Buffer High-Performance ▪ 13V/μs Slew Rate ▪ 12MHz, -3dB Bandwidth ±75mA Output Short-Circuit Current Low 1.5mA Quiescent Current General Description 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 backlig...