Bias Power Supply with High-Speed Amplifier and High-Accuracy LDO for LCD TVs CXLC89100/A DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays

发布时间:2020-04-06 09:43:38 浏览次数:724 作者:嘉泰姆
摘要:Bias Power Supply with High-Speed Amplifier and High-Accuracy LDO for LCD TVs CXLC89100/A DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays

目录

1.产品概述       2.产品特点     B6p嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)</span>B6p嘉泰姆

5.产品封装       6.电路原理图</strong>  B6p嘉泰姆

7.相关产品B6p嘉泰姆

   产品概述 返回TOPB6p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TOPB6p嘉泰姆


„ 8V to 14V Input Voltage Range B6p嘉泰姆

„ 500kHz/750kHz Fixed Switching Frequency B6p嘉泰姆

„ VS Step-Up Converter B6p嘉泰姆

‹ Current Mode B6p嘉泰姆

‹ 1% Feedback Accuracy B6p嘉泰姆

‹ Output Voltage Range up to 20V B6p嘉泰姆

‹ 3A Switch Current B6p嘉泰姆

‹ Adjustable Soft Start B6p嘉泰姆

‹ Adjustable Current Limit B6p嘉泰姆

„ VLOGIC Step-Down Converter B6p嘉泰姆

‹ Current Mode B6p嘉泰姆

‹ 1% Feedback Accuracy B6p嘉泰姆

‹ 2.5A Switch Current B6p嘉泰姆

‹ 2.5ms Internal Soft Start B6p嘉泰姆

„ 150mA Negative Charge Pump Driver for VGL B6p嘉泰姆

„ 150mA Positive Charge Pump Driver for VGH B6p嘉泰姆

„ Integrated High Voltage Switch for Gate Voltage Shaping B6p嘉泰姆

„ High Voltage LDO for VREF B6p嘉泰姆

‹ 0.5% Feedback Accuracy B6p嘉泰姆

‹ 0.5V Dropout at 60mA Output Current B6p嘉泰姆

„ High-Speed Operational Amplifier B6p嘉泰姆

‹ 20MHz -3dB Bandwidth B6p嘉泰姆

‹ 45 V/μs Slew Rate B6p嘉泰姆

‹ ±200-mA Short-Circuit Current B6p嘉泰姆

„ Gate Drive Signal to Drive External MOSFET B6p嘉泰姆

„ XAO Comparator B6p嘉泰姆

„ Thermal Shutdown B6p嘉泰姆

„ Available in 7mmx7mm 48-pin TQFN PackageB6p嘉泰姆

   应用范围 返回TOPB6p嘉泰姆


„ LCD TV PanelsB6p嘉泰姆

   技术规格书(产品PDF) 返回TOP B6p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</span>!</span>
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