Datasheet Summary
TFT- LCD DC-DC Converters with Operational Amplifiers EC9219
General Description
The EC9219 include a high-performance step-up regulator, and high-current operational amplifiers for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs). The step-up DC-DC converter provides the regulated supply voltage for the panel source driver ICs. The converter is a high-frequency (1.2MHz or 640KHZ) current-mode regulator with an integrated 18V n-channel MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provides fast transient response to pulsed loads while achieving efficiencies over 85%. The EC9219 includes one operational amplifier. These amplifiers...