EC9219|TFT- LCD DC-DC Converters With OP Amp

EC9219|TFT- LCD DC-DC Converters With OP Amp

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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 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.

Features

◆2.6V to 5.5V Input Supply Range
◆1.2MHz or 640KHZ Current-Mode Step-Up Regulator
◆Fast Transient Response to Pulsed Load
◆High-Accuracy Output Voltage ( 2% )
◆Built-In 18V, 1.6A, 0.16Ω N-Channel MOSFET
◆High Efficiency (90%)
◆High-Performance Operational Amplifiers
◆17V/μs Slew Rate
◆12MHz, -3dB Bandwidth
◆Rail-to-Rail Inputs/Outputs
◆Thermal-Overload Protection

Applications

◆Notebook Computer Displays ,
◆LCD Monitor Panels ,
◆Automotive Displays


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The Rules Are Rigid, The Design Is Alive
We Provide Flexible And Flexible Customized Ic And Module Design

Tell Us What Product Project You Want To Do!

The Rules Are Rigid, The Design Is Alive
We Provide Flexible And Flexible Customized Ic And Module Design

Tell Us What Product Project You Want To Do!

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