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首页 > Products > Led Driver > AC/DC Conversion High Voltage LED Driver  > Medium and Small Power Control >Cxac8505 is a high-precision off-line switching power supply circuit, which is applied to low-power AC / DC chargers and adapters. The maximum output power of cxac8505 is 12W
Cxac8505 is a high-precision off-line switching power supply circuit, which is applied to low-power AC / DC chargers and adapters. The maximum output power of cxac8505 is 12W

The cxac8505 uses the original edge sampling for precise constant current and constant voltage control, which can eliminate the optocoupler and TL431 in general application. In the constant current mode, the output power can be set by the sampling resistance Rs external to the CS pin. In the constant voltage mode, the chip can work in a variety of modes to ensure a high overall conversion efficiency. In addition, the chip is built-in wired voltage drop compensation
As a result, the cxac8505 achieves good load adjustment rate. Cxac8505 works in PFM state in constant current mode, PWM state in constant voltage mode, frequency reduction in light load.
Cxac8505 provides power on soft start function and various self recovery protection functions, including OCP, OVP, UVLO
Cxac8505 over temperature protection, etc. Cxac8505 can provide better EMI performance due to its buffing function

Cxac8505 is a high-precision off-line switching power supply circuit, which is applied to low-power AC / DC chargers and adapters. The maximum output power of cxac8505 is 12W
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   产品概述 返回TOPYgH嘉泰姆


   CXAC8505是一颗高精度离线式开关电源电路,应用于低功耗AC/DC充电器与适配器。CXAC8505最大输出功率12W,采用SOP8封装. YgH嘉泰姆

        CXAC8505使用原边取样来进行精确的恒流、恒压控制,可以省去一般应用中的光耦与TL431。在恒流模式下,输出功率可由CS脚外接的取样电阻Rs设定。在恒压模式下,芯片的多种工作模式可以保证较高的整体转换效率。此外,芯片内置有线压降补偿.  YgH嘉泰姆

        CXAC8505由此取得良好的负载调整率。CXAC8505在恒流模式下工作于PFM状态,在恒压模式下工作于PWM状态,轻载时降频工作。YgH嘉泰姆
        CXAC8505提供上电软启动功能与各种可自恢复的保护功能,包括逐周期限流保护(OCP),VDD过压保护(OVP),VDD过压箝位,欠压保护(UVLO).      YgH嘉泰姆
       CXAC8505过温保护等。CXAC8505具有的抖频功能,可以提供更好的EMI性能。

   产品特点 返回TOPYgH嘉泰姆


l         全电压范围内5%的恒压精度、5%的恒流精度YgH嘉泰姆

l         使用原边反馈控制,可省去光耦与TL431YgH嘉泰姆

l         外部可设定恒流值与输出功率YgH嘉泰姆

l         内置原边反馈恒流控制YgH嘉泰姆

l         内建自适应峰值电流控制YgH嘉泰姆

l         内建原边电感补偿YgH嘉泰姆

l         可外部调整的线压降补偿YgH嘉泰姆

l         上电软启动YgH嘉泰姆

l         内置前沿消隐(LEB)功能YgH嘉泰姆

l         逐周期限流保护(OCP)YgH嘉泰姆

l         欠压保护(UVLO)、过压保护(OVP)、VDD 电压箝位保护YgH嘉泰姆

   应用范围 返回TOPYgH嘉泰姆


 手机充电器YgH嘉泰姆

 PDA、数码相机充电器YgH嘉泰姆

 电视、个人电脑的辅助电源YgH嘉泰姆

 可替代线性稳压器、RCC 电源YgH嘉泰姆

   技术规格书(产品PDF) 返回TOP YgH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!YgH嘉泰姆

 QQ截图20160419174301.jpgYgH嘉泰姆

产品封装图 返回TOPYgH嘉泰姆


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电路原理图 返回TOPYgH嘉泰姆


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