AT5520A Overview
The AT5520A includes a high-performance boost regulator, a V 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). 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 Ordering Information ORDER NUMBER MARKING...
AT5520A Key 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 Protection
- Output Under-Voltage Protection
- High-Performance Operational Amplifier