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首页 > 产品中心 > LED驱动电路 > LCD驱动芯片 > 液晶显示驱动 >CXLC8988 CXLC8989高性能的升压调节器降压升压控制器高压电荷泵调节器3个VCOM缓冲器(单位增益OPA)开漏拉高VGLC信号发生器和7通道电平移位器有用于有源矩阵薄膜晶体管TFT液晶显示器LCD的可调栅极阴影功能
CXLC8988 CXLC8989高性能的升压调节器降压升压控制器高压电荷泵调节器3个VCOM缓冲器(单位增益OPA)开漏拉高VGLC信号发生器和7通道电平移位器有用于有源矩阵薄膜晶体管TFT液晶显示器LCD的可调栅极阴影功能
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CXLC8988 CXLC8989包括一个高性能的升压调节器、一个降压升压控制器、一个高压电荷泵调节器、3个VCOM缓冲器(单位增益OPA)、开漏拉高VGLC信号发生器和7通道电平移位器,具有用于有源矩阵薄膜晶体管(TFT)液晶显示器(LCD)的可调栅极阴影功能。升压稳压器为面板源驱动芯片提供稳压电源。它是一个高开关频率(1.2兆赫)电流模式稳压器,带有集成的20V/0.1ΩNMOS开关,允许使用超小型电感和陶瓷电容器。它提供了对脉冲加载的快速瞬态响应,同时实现了85%以上的效率。该装置能从低至2.8V的输入端产生高达18V的输出电压,电压模式buck-boost控制器与外部温度传感器配合,为电平变换器提供补偿关断电压。同时电荷泵控制器调节外部电荷泵电压源,为电平移位器供电。电平移位器将显示定时控制器(TCON)产生的逻辑电平控制信号转换为LCD面板所需的高电平信号。电平移位器输出的每个通道使用低阻抗晶体管来实现快速上升和下降时间,即使在驱动LCD应用中的电容负载时也是如此。通道1到6支持栅极电压阴影。它们分为两组,每组都有自己的阴影放电电阻输出。外部R-C定时器通过DTS输入定义着色周期。VCOM缓冲器可以驱动LCD VCOM电压,该电压具有高短路电流(200mA)、快速转换速率(20V/μs)、宽带宽(8MHz)和轨对轨输入/输出。

CXLC8988 CXLC8989高性能的升压调节器降压升压控制器高压电荷泵调节器3个VCOM缓冲器(单位增益OPA)开漏拉高VGLC信号发生器和7通道电平移位器有用于有源矩阵薄膜晶体管TFT液晶显示器LCD的可调栅极阴影功能
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目录

1.产品概述       2.产品特点     mh6嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)mh6嘉泰姆

5.产品封装       6.电路原理图  mh6嘉泰姆

7.相关产品mh6嘉泰姆

   产品概述 返回TOPmh6嘉泰姆


The CXLC8988 CXLC8989 includes a high-performance boost regulator, a buck-boost controller, a high voltage charge pump regulator, 3 VCOM buffers (unity-gain OPA), open-drain pull high VGLC signal generator and 7-channel level shifter with adjustable gate shading function 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/0.1Ω 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 the level shifters. The level shifters transform the logic-level control signals generated by the display timing controller (TCON) into the high-level signals needed by LCD panel. Each channel of level shifter output uses low impedance transistors to achieve fast rising and falling time, even when driving the capacitive loads present in LCD applications. Channel 1 to 6 supports gate voltage shading. They are organized in two groups, each with its own shading discharge resistor output. External R-C timer defines shading period though the DTS input. 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.

   产品特点 返回TOPmh6嘉泰姆


„ 2.6V~5.5V Supply Range mh6嘉泰姆

„ Current Mode Boost Regulator for AVDD mh6嘉泰姆

Š 0.1Ω/20V/3A Embedded NMOS switch mh6嘉泰姆

Š Fixed 1.2MHz Switching Frequency mh6嘉泰姆

Š Up to 85% Efficiency mh6嘉泰姆

Š 1% Output Regulation mh6嘉泰姆

„ Voltage Mode Buck-Boost Regulator for VGOFF mh6嘉泰姆

Š Fixed 600kHz Switching Frequency mh6嘉泰姆

Š Up to 85% Efficiency mh6嘉泰姆

Š 1% Output Regulation mh6嘉泰姆

„ Charge Pump Regulator for VGON mh6嘉泰姆

„ 3-Channel Rail-to-Rail Unity-Gain Operational Amplifier mh6嘉泰姆

Š ±200mA Output Short Circuit Current mh6嘉泰姆

Š 20V/μs Slew Rate mh6嘉泰姆

Š 18MHz, -3dB Bandwidth mh6嘉泰姆

„ Built-In Power On Sequence and Soft Start Function mh6嘉泰姆

„ 7-Channel Level Shifter mh6嘉泰姆

Š +33V Highest Voltage Level mh6嘉泰姆

Š -30V Lowest Voltage Level mh6嘉泰姆

Š Maximum 1μs Rising/Falling Time mh6嘉泰姆

Š 300mA Peak Current mh6嘉泰姆

Š 15mA Continuous Current mh6嘉泰姆

Š Adjustable Gate Shading Function mh6嘉泰姆

„ Opened Drain Pull High VGLC Signal mh6嘉泰姆

„ Protections: mh6嘉泰姆

Š Input Under Voltage Lockout (UVLO) mh6嘉泰姆

Š Over Current Protection for AVDD (OCP) mh6嘉泰姆

Š Output Under Voltage Protection for AVDD, GON and GOFF (UVP) mh6嘉泰姆

Š Output Over Voltage Protection for AVDD, GON and GOFF (OVP) mh6嘉泰姆

Š Operational Amplifier Short Circuit Protection (SCP) mh6嘉泰姆

Š Over Temperature Protection (OTP) mh6嘉泰姆

„ TQFN6x6-48L Package mh6嘉泰姆

„ RoHS Compliantmh6嘉泰姆

   应用范围 返回TOPmh6嘉泰姆


„ LCD TV Panel mh6嘉泰姆

„ LCD Monitor Panelmh6嘉泰姆

   技术规格书(产品PDF) 返回TOP mh6嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持!mh6嘉泰姆

 QQ截图20160419174301.jpgmh6嘉泰姆

产品封装图 返回TOPmh6嘉泰姆


image.pngmh6嘉泰姆

电路原理图 返回TOPmh6嘉泰姆


image.pngmh6嘉泰姆

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