CXLC89100/A

CXLC89100/ADC-DC转换器提供TQFN封装的薄膜晶体管(TFT)液晶显示器(LCD)面板所需的调节电压。一个升压转换器、一个降压转换器和两个电荷泵将8V到14V的输入电压转换为四个输出电压。这些功能完成了大屏幕液晶面板的供电要求。升压转换器提供电源电压VS,降压转换器为系统提供逻辑电压。双电荷泵独立地产生可调节的输出电压VGL和VGH来偏置LCD。这四个模块以500kHz或750kHz的固定开关频率工作。升压和降压转换器都以异步开关模式工作。电流模式控制提供了快速的瞬态响应,简化了回路稳定。故障保护包括逐周电流限制、热关机和输出故障关机。两个电荷泵均采用电流模式控制,以调节其输出电压,从而使输出纹波和电容器尺寸最小化。采用高压开关进行栅极电压整形,提高了TFT-LCD的显示质量。CXLC89100/A包括一个高速大电流运算放大器和一个用于伽马缓冲参考的高精度LDO

CXLC89100 CXLC89100A升压转换器降压转换器和两个电荷泵将8V到14V的输入电压转换为四个输出电压升压转换器提供电源电压VS降压转换器为系统提供逻辑电压双电荷泵独立地产生可调节的输出电压VGL和VGH来偏置LCD

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1.产品概述       2.产品特点     8hL嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)8hL嘉泰姆

5.产品封装       6.电路原理图  8hL嘉泰姆

7.相关产品8hL嘉泰姆

   产品概述 返回TOP8hL嘉泰姆


The CXLC89100/A DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels in TQFN package. One step-up converter, one step-down converter, and two charge pumps convert the 8V to 14V input voltage into four output voltages. These features complete the powersupply requirements of large screen LCD panels. The step-up converter provides source voltages VS and the step-down converter provides logic voltage for the system. The dual charge pumps independently generate adjustable regulated output voltages VGL and VGH to bias the LCD. These four blocks operate with a fixed switching frequency of 500kHz or 750kHz. Both step-up and step-down converters operate in asynchronous switch mode. Current mode control provides fast transient response and eases loop stabilization. Fault protection includes cycle-by-cycle current limit, thermal shutdown, and output-fault shutdown. Current mode control is used for both charge pumps to regulate its output voltage, which minimizes output ripple and capacitor sizes. High voltage switch is used for gate voltage shaping to improve TFT-LCD display quality. The CXLC89100/A includes one high-speed high-current operational amplifier and one high-accuracy LDO for Gamma buffer reference. The CXLC89100/A is available in a 48-pin TQFN package.

   产品特点 返回TOP8hL嘉泰姆


„ 8V to 14V Input Voltage Range 8hL嘉泰姆

„ 500kHz/750kHz Fixed Switching Frequency 8hL嘉泰姆

„ VS Step-Up Converter 8hL嘉泰姆

‹ Current Mode 8hL嘉泰姆

‹ 1% Feedback Accuracy 8hL嘉泰姆

‹ Output Voltage Range up to 20V 8hL嘉泰姆

‹ 3A Switch Current 8hL嘉泰姆

‹ Adjustable Soft Start 8hL嘉泰姆

‹ Adjustable Current Limit 8hL嘉泰姆

„ VLOGIC Step-Down Converter 8hL嘉泰姆

‹ Current Mode 8hL嘉泰姆

‹ 1% Feedback Accuracy 8hL嘉泰姆

‹ 2.5A Switch Current 8hL嘉泰姆

‹ 2.5ms Internal Soft Start 8hL嘉泰姆

„ 150mA Negative Charge Pump Driver for VGL 8hL嘉泰姆

„ 150mA Positive Charge Pump Driver for VGH 8hL嘉泰姆

„ Integrated High Voltage Switch for Gate Voltage Shaping 8hL嘉泰姆

„ High Voltage LDO for VREF 8hL嘉泰姆

‹ 0.5% Feedback Accuracy 8hL嘉泰姆

‹ 0.5V Dropout at 60mA Output Current 8hL嘉泰姆

„ High-Speed Operational Amplifier 8hL嘉泰姆

‹ 20MHz -3dB Bandwidth 8hL嘉泰姆

‹ 45 V/μs Slew Rate 8hL嘉泰姆

‹ ±200-mA Short-Circuit Current 8hL嘉泰姆

„ Gate Drive Signal to Drive External MOSFET 8hL嘉泰姆

„ XAO Comparator 8hL嘉泰姆

„ Thermal Shutdown 8hL嘉泰姆

„ Available in 7mmx7mm 48-pin TQFN Package8hL嘉泰姆

   应用范围 返回TOP8hL嘉泰姆


„ LCD TV Panels8hL嘉泰姆

   技术规格书(产品PDF) 返回TOP 8hL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!8hL嘉泰姆

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产品封装图 返回TOP8hL嘉泰姆


image.png8hL嘉泰姆

电路原理图 返回TOP8hL嘉泰姆


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◀ 上一篇:CXLC8999 CXLC8999B DC-DC转换器薄膜晶体管TFT液晶显示器LCD面板所需的调节电压升压转换器降压转换器和两个电荷泵将8V到14V的输入电压转换为四个输出电压升压转换器提供电源电压VS降压转换器为系统提供逻辑电压

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下一篇▶:CXLC89101升压转换器降压转换器两个电荷泵稳压器将8V到14V的输入电压转换成四个输出电压升压变换器提供源电压VAVDD降压变换器为系统提供逻辑电压VLOGIC双电荷泵稳压器独立地产生可调节的输出电压VGL和VGH