Datasheet > EC9223NNQ1R

EC9223NNQ1R

更新时间： 2024-02-15 06:54:03

品牌	Logo	应用领域
飞虹 - E-CMOS		/
页数	文件大小	规格书
13页	271K
描述
Multi-Channel TFT LCD Supply

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EC9223NNQ1R 数据手册

EC9223

Multi-Channel TFT LCD Supply

General Description

TheEC9223 is an integrated power supply solution optimized for small to medium size thin- film transistor (TFT)

liquid crystal displays (LCD’s). The boost converter operates at a fixed frequency of 1.2MHz. The integrated N-

channel FET has a current limit of 1.8A. The positive and negative charge pumps provide regulated TFT LCD

gate-on and gate-off supplies. Both outputs can be adjusted by external resistive voltage dividers.

The integrated operational amplifier is typically used for LCD VCOM driving; the output can sink or source up to

150mA short-circuit current. A built-in voltage detector generates a reset signal when the input voltage drops

below 2.6V. The reset signal is active low and has a 123ms blanking time during power-on. The EC9223 is

available in a thin 16-pin 3x3 mm WQFN green package.

Features

QFN-16 Pin Configuration

ꢀ2.5V to 5.5V input supply

ꢀ Active-high Enable Control

ꢀCurrent-mode boost regulator

- 1.2MHz switching frequency

- Integrated 20V/1.8A 700mꢀ FET

- Fast transient response to pulsed load

- High efficiency up to 90%

- Adjustable high-accuracy output voltage(±1%)

ꢀVGH positive charge pump

ꢀVGL negative charge pump

ꢀIntegrated unity-gain VCOM buffer

- ±150mA output current limit

- 12V/us slew rate

- 12MHz Bandwidth

ꢀ Low-voltage detection circuit

ꢀSoft-start and timed delay fault latch for all outputs

ꢀThermal shutdown

ꢀThin 3x3 mm 16-lead WQFN package

Applications

ꢀTFT LCD for Notebooks

ꢀTablet Personal Computer Display

ꢀCar Navigation Display

ꢀPortable equipment

E-CMOS Corp. (www.ecmos.com.tw)

5E26N-Rev. F001

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12 3 4 5 6 7...13

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