Description
Global Mixed-mode Technology AT5520A 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 ac.
Features
* 2.5V to 5.5V Input Supply Range
* Active-High Enable Control
* 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
Applications
* Photo Frame
* GPS
* UMPC
regulator with an integrated 20V N-Channel 0.7Ω MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provides fast transient response to pulsed loading while achieving efficiency over 90%. The device can produce output vol