EC9219中文资料 TFT- LCD DC-DC Converters with OP Amp.数据手册E-CMOS规格书

描述 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 are designed to drive the LCD backplane (VCOM) and/or the gamma-correction divider string. The devices feature high output current (±150mA), fast slew rate (17V/μs), wide bandwidth (12MHz), and rail-to-rail inputs and outputs The EC9219 are available in 14- pin thin TSOP packages with a maximum thickness of 1mm for ultra-thin LCD panels.

 

特性 Features

2.6V to 5.5V Input Supply Range1.2MHz or 640KHZ Current-Mode Step-Up RegulatorFast Transient Response to Pulsed LoadHigh-Accuracy Output Voltage ( 2% )Built-In 18V, 1.6A, 0.16Ω N-Channel MOSFETHigh Efficiency (90%)High-Performance Operational Amplifiers17V/μs Slew Rate12MHz, -3dB BandwidthRail-to-Rail Inputs/OutputsThermal-Overload Protection

应用 Application

Notebook Computer DisplaysLCD Monitor PanelsAutomotive Displays