AT5520AR41U  Bias Power Supply for TFT LCD Panels.





      The AT5520A includes a high-performance boost regulator, a VCOM buffer (unity gain OPA), a VGH charge pump driver, and a VGL charge pump driver for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs).





1、1.2MHz Current-Mode Boost Regulator

 ——Fast Transient Response to Pulse Load

 ——±1% Accurate Output Voltage

 ——Built-In 20V/1.8A, 0.7Ω N-Channel MOSFET

 ——High Efficiency up to 90%

 ——Over-Current Protection

 ——Output Under-Voltage Protection



2、High-Performance Operational Amplifier

 ————±150mA Output Short-Circuit Current

 ——12V/μs Slew Rate

 ——12MHz, -3dB Bandwidth

 ——Rail-to-Rail Input and Output