Integrated LCD Bias Power Supply CXLC8990 includes a high-performance boost regulator, a buck-boost controller, a high voltage charge pump regulator, 3 VCOM buffers (unity-gain OPA) for active-matrix

发布时间:2020-04-06 09:43:38 浏览次数:713 作者:嘉泰姆
摘要:Integrated LCD Bias Power Supply CXLC8990 includes a high-performance boost regulator, a buck-boost controller, a high voltage charge pump regulator, 3 VCOM buffers (unity-gain OPA) for active-matrix

目录

1.产品概述       2.产品特点     9XQ嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)</span>9XQ嘉泰姆

5.产品封装       6.电路原理图</strong>  9XQ嘉泰姆

7.相关产品9XQ嘉泰姆

   产品概述 返回TOP9XQ嘉泰姆


The CXLC8990 includes a high-performance boost regulator, a buck-boost controller, a high voltage charge pump regulator, 3 VCOM buffers (unity-gain OPA) for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs). The boost regulator provides the regulated supply voltage for the panel source driver ICs. It is a high switching frequency (1.2MHz) current-mode regulator with an integrated 20V/0.15Ω NMOS switch that allows the use of ultra small inductors and ceramic capacitors. It provides fast transient response to pulsed loading while achieving efficiency over 85%. The device can produce output voltage as high as 18V from an input as low as 2.8V. A voltage mode buck-boost controller cooperates with external temperature sensor provide compensated gate-off voltage supply to the level shifters. While the charge pump controller regulates the external charge pump voltage source to supply for other devices. The VCOM buffer can drive the LCD VCOM voltage that features high short-circuit current (200mA), fast slew rate (20V/μs), wide bandwidth (8MHz) and rail-to-rail input/output. The CXLC8990 features extensive protection functions that include UVLO, OCP, UVP, OVP, and OTP. It is available in a QFN5X5-32 package.

   产品特点 返回TOP9XQ嘉泰姆


„ 2.6V~5.5V Supply Range 9XQ嘉泰姆

„ Current Mode Boost Regulator for AVDD 9XQ嘉泰姆

Š 0.15Ω/20V/3A Embedded NMOS switch 9XQ嘉泰姆

Š Fixed 1.2MHz Switching Frequency 9XQ嘉泰姆

Š Up to 85% Efficiency 9XQ嘉泰姆

Š 1% Output Regulation 9XQ嘉泰姆

„ Voltage Mode Buck-Boost Regulator for VGL 9XQ嘉泰姆

Š Fixed 600kHz Switching Frequency 9XQ嘉泰姆

Š Up to 85% Efficiency 9XQ嘉泰姆

Š 1% Output Regulation 9XQ嘉泰姆

„ Charge Pump Regulator for VGH 9XQ嘉泰姆

„ 3-Channel Rail-to-Rail Unity-Gain Operational Amplifier 9XQ嘉泰姆

Š ±200mA Output Short Circuit Current 9XQ嘉泰姆

Š 20V/μs Slew Rate 9XQ嘉泰姆

Š 18MHz, -3dB Bandwidth 9XQ嘉泰姆

„ Built-In Power On Sequence and Soft Start Function 9XQ嘉泰姆

„ Protections: 9XQ嘉泰姆

Š Input Under Voltage Lockout (UVLO) 9XQ嘉泰姆

Š Over Current Protection for AVDD (OCP) 9XQ嘉泰姆

Š Output Under Voltage Protection for AVDD, VGH and VGL (UVP) 9XQ嘉泰姆

Š Output Over Voltage Protection for AVDD, VGL (OVP) 9XQ嘉泰姆

Š Operational Amplifier Short Circuit Protection (SCP) 9XQ嘉泰姆

Š Over Temperature Protection (OTP) 9XQ嘉泰姆

„ QFN5X5-32 Package 9XQ嘉泰姆

„ RoHS Compliant9XQ嘉泰姆

   应用范围 返回TOP9XQ嘉泰姆


„ LCD TV Panel 9XQ嘉泰姆

„ LCD Monitor Panel9XQ嘉泰姆

   技术规格书(产品PDF) 返回TOP 9XQ嘉泰姆


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 QQ截图20160419174301.jpg9XQ嘉泰姆

产品封装图&nbsp;返回TOP9XQ嘉泰姆


image.png9XQ嘉泰姆

电路原理图&nbsp;返回TOP9XQ嘉泰姆

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