{"id":436,"date":"2021-12-16T02:17:00","date_gmt":"2021-12-15T18:17:00","guid":{"rendered":"https:\/\/ecmos2.liho.work\/?p=436"},"modified":"2024-09-10T13:10:28","modified_gmt":"2024-09-10T05:10:28","slug":"ec9219","status":"publish","type":"post","link":"https:\/\/www.ecmos.com.tw\/cn\/dc-converter-boost\/ec9219\/","title":{"rendered":"EC9219\uff5cTFT- LCD DC-DC Converters With OP Amp"},"content":{"rendered":"\n
\u898f\u683c\u66f8\u4e0b\u8f09<\/div><\/a>\n\n\n\n
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General Description<\/h3>\n\n\n\n

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).<\/p>\n\n\n\n

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%.<\/p>\n\n\n\n

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 (\u00b1150mA), fast slew rate
(17V\/\u03bcs), 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.<\/p>\n\n\n\n

Features<\/h3>\n\n\n\n

\u25c62.6V to 5.5V Input Supply Range
\u25c61.2MHz or 640KHZ Current-Mode Step-Up Regulator
\u25c6Fast Transient Response to Pulsed Load
\u25c6High-Accuracy Output Voltage ( 2% )
\u25c6Built-In 18V, 1.6A, 0.16\u2126 N-Channel MOSFET
\u25c6High Efficiency (90%)
\u25c6High-Performance Operational Amplifiers
\u25c617V\/\u03bcs Slew Rate
\u25c612MHz, -3dB Bandwidth
\u25c6Rail-to-Rail Inputs\/Outputs
\u25c6Thermal-Overload Protection<\/p>\n\n\n\n

Applications<\/h3>\n\n\n\n

\u25c6Notebook Computer Displays ,
\u25c6LCD Monitor Panels ,
\u25c6Automotive Displays<\/p>\n\n\n\n

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