液晶显示器电源芯片G5520AR41U，科瑞芯GMT授权代理商，深圳现货供应
The AT5520A includes a high-performance boost regulator, a V COM buffer (unity gain OPA), a V GH
charge pump driver, and a VGL charge pump driver for active-matrix thin-film transistor (TFT) liquid-crystal
displays (LCDs).
The boost converter provides the regulated supply voltage for the panel source driver ICs. The converter
is a high switching frequency (1.2MHz) current mode 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 re-
sponse to pulsed loading while achieving efficiency over 90%. The device can produce output voltage as high as 18V from an input as low as 2.8V.
产品特性：
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 Ω N-Channel MOSFET
High Efficiency up to 90%
Over-Current Protection
Output Under-Voltage Protection
High-Performance Operational Amplifier
±150mA Output Short-Circuit Current
12V/μs Slew Rate
12MHz, -3dB Bandwidth
Rail-to-Rail Input and Output
600kHz Negative Charge Pump Driver for V GL
600kHz Positive Charge Pump Driver for V GH
Power-On Sequence Control
Thermal-Overload Protection
TQFN3X3-16 Package
