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              ME8105
              元件品牌:东森微
              元件型号:ME8105
              采购数量:
               

              产品介绍

              ME8105D8G:高性能电流模式PWM 开关电源控制器,专为高性价比AC/DC 转换器设计:
              高性能电流模式PWM控制器,专为高性价比AC/DC转换器设计,在85-265V的宽电压范围内提供高达12W的连续输出功率,峰值输出功率更可达18W。优化的高合理性电路设计结合高性价比的双极制作工艺,最大程度上节约了产品的整体成本。该电源控制器可工作于典型的反激电路拓扑中,构成简洁的AC/DC转换器,IC内部启动电路被设计成一种独特的电流吸入方式,可利用功率开关管的本身放大作用完成启动(开关管Ic对Ib的放大),这显著地降低了启动电阻的功率消?#27169;?#32780;在输出功?#24335;?#23567;时,IC将自动降低工作频率,从而实现了极低的待机功?#27169;?#22312;功率管截止时,内部电路将功率管反向偏置,直接利用了双极性晶体管的CB高耐压特性,大幅提高功率管的耐电压能力直到700V的高压,这保证了功率管的安全,VCC达到9.8V时,芯片内部会启动过压保护,限制输出电压上升可防止光耦或反馈电路损坏引起的输出电压过高,IC内部还提供了完善的防过载,防饱和功能,可实时防范过载、变压器饱和、输出短路等异常状况,提高了电源的可靠性。IC内部还集成?#23435;?#24230;保护功能,在芯片过热时关断输出。电流限制可由外部器件Rs设定。

               

              ME8105D8G特点
              * 内置700V高压功率开关管,极少外围器件
              * 锁存脉宽调制,逐脉冲限流检测
              * 低输出降频功能,待机低于0.1W
              * 内建斜坡与反馈补偿功能
              * 独立上限电流检测控制器,实时处理控制器过流、过载
              * 关?#29616;?#26399;发射极偏压输出,提高功率管耐压
              * 内置具有温度补偿的限流电阻,精确电流限制
              * 内置热保护电路
              * 利用开关功率管放大作用完成启动,减少功耗
              * 低启动和工作电流
              * VCC过压自动限制
              * 宽电压连续输出功率可达12W,峰值输出功率可达18W
              ME8105D8G的应用场合: 
              * 电源适配器
              * 便携式设备充电电源 
              * DVD/DVB电源
              * 电池充电器
              * ATX待机电源

               

              封装形式:8-pin DIP-8/7-pin DIP-7

              我司?#22351;?#20026;您提供可靠的ME8105集成电路,还?#21830;?#20379;ME8105应用资料、各类证书及产品研发技术支持!
              联系方式

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