CXLC89101

CXLC89101 DC-DC转换器提供TQFN5X5-28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稳压器将8V到14V的输入电压转换成四个输出电压。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,使用连接到开关节点的外部电荷泵来偏置LCD。升压变换器的开关频率可从500kHz调整到2MHz。降压变换器以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。故障保护包括逐周限流、热关机和短路保护、升压变换器过电压保护

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

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1.产品概述       2.产品特点     XhJ嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)XhJ嘉泰姆

5.产品封装       6.电路原理图  XhJ嘉泰姆

7.相关产品XhJ嘉泰姆

   产品概述 返回TOPXhJ嘉泰姆


The CXLC89101 DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels in TQFN5X5-28 package. One step-up converter, one step-down converter, and two charge pumps regulators converter the 8V to 14V input voltage into four output voltages. These features complete the power- supply requirements of large screen LCD panels. The step-up converter provides source voltages VAVDD and the step-down converter provides logic voltage VLOGIC for the system. The dual charge pumps regulators independently generate adjustable regulated output voltages VGL and VGH to bias the LCD using external charge pump attached to the switching node. . The step-up converter operates with a adjustable switching frequency from 500kHz to 2MHz. And step-down converter operates with a fixed switching frequency of 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 short-circuit protection, and over voltage protection of the step-up converter. The CXLC89101 is available in a 28-pin TQFN (5mm x 5mm) package

   产品特点 返回TOPXhJ嘉泰姆


„ Input Supply Range: 9.5V ~ 14V XhJ嘉泰姆

„ Current mode Boost converter for AVDD XhJ嘉泰姆

¾ Adjustable switching frequency XhJ嘉泰姆

¾ Integrated 20V/4A ,0.1Ω switching N-MOSFET XhJ嘉泰姆

¾ 1.5% accurate with 3.5-A switching current XhJ嘉泰姆

„ Buck Converter for VLOGIC XhJ嘉泰姆

¾ Fixed 750kHz switching frequency XhJ嘉泰姆

¾ Integrated 12-V/0.2-C Switching N-MOSFET XhJ嘉泰姆

¾ 1.5% accurate with 1.5-A switching current XhJ嘉泰姆

„ Charge-pump regulator for VGON & VGOFF XhJ嘉泰姆

„ Built-in power-on sequence and soft-start function XhJ嘉泰姆

„ GD Signal to drive external P-MOSFET XhJ嘉泰姆

„ Protection Function XhJ嘉泰姆

¾ Input Under Voltage Lockout (UVLO) XhJ嘉泰姆

¾ Thermal overload Protection (TOP) XhJ嘉泰姆

¾ Over-Voltage Protection for (OVP) XhJ嘉泰姆

¾ Over-Current Protection (OCP) XhJ嘉泰姆

¾ Output Under Voltage Protection (UVP) XhJ嘉泰姆

¾ Short Circuit Protection (SCP) XhJ嘉泰姆

„ Available in TQFN-5X5-28 PackageXhJ嘉泰姆

   应用范围 返回TOPXhJ嘉泰姆


„ TFT LCD DisplaysXhJ嘉泰姆

   技术规格书(产品PDF) 返回TOP XhJ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!XhJ嘉泰姆

 QQ截图20160419174301.jpgXhJ嘉泰姆

产品封装图 返回TOPXhJ嘉泰姆


image.pngXhJ嘉泰姆

电路原理图 返回TOPXhJ嘉泰姆


aXhJ嘉泰姆

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◀ 上一篇: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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下一篇▶:CXLC89102 VAVDD升压变换器和VHAVDD降压变换器用于源驱动和Gamma缓冲充电泵VGH和VGL用于栅极驱动器或电平移位器VGH电压与面板栅GIP技术的温度补偿有关