G5520A

Global Mixed-mode Technology G5520A Bias Power Supply for TFT LCD Panels Features „ 2.5V to 5.5V Input Supply Range „ Active-High Enable Control „ 1.2MHz Current-Mode Boost Regulator Š Fast Transient Response to Pulse Load Š ±1% Accurate Output Voltage Š Built-In 20V/1.8A, 0.7Ω N-Channel MOSFET Š High Efficiency up to 90% Š Over-Current Protection Š Output Under-Voltage Protection „ High-Performance Operational Amplifier Š ±150mA Output Short-Circuit Current Š 12V/μs Slew Rate Š 12MHz, -3dB Bandwidth Š Rail-to-Rail Input and Output „ 600kHz Negative Charge Pump Driver for VGL „ 600kHz Positive Charge Pump Driver for VGH „ Power-On Sequence Control „ Thermal-Overload Protection „ TQFN3X3-16 Package Applications „ Photo Frame „ GPS „ UMPC General Description The G5520A 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 d...