MAX5088

2.2MHz、2A buck转换器,集成高边开关

高达2.2MHz的开关频率可避免音频噪声干扰ADSL2+和车载AM无线频段


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说明

MAX5088/MAX5089是内置n沟道功率MOSFET的高频DC-DC转换器,可提供高达2A的负载电流。MAX5088包括内部功率MOSFET,适用于异步buck拓扑电源设计。该系列器件工作在4.5V至5.5V或5.5V至23V输入电压,开关频率可通过电阻设置为200kHz至2.2MHz。带有峰值开关限流的电压模式架构可以稳定工作,开关频率高达2.2MHz。MAX5088包括用于驱动另一个DC-DC转换器的180°反相工作时钟输出和电源上电复位(/RESET)输出。MAX5089则包括电源就绪输出和同步整流驱动器,用于驱动buck转换器的外部低边MOSFET,实现高效转换。

MAX5088/MAX5089提供峰值限流以及热关断功能,可为负载点调节应用提供非常可靠、紧凑的电源。其它特性包括同步、内部数字软启动和使能输入。MAX5088/MAX5089采用高效散热的小尺寸、16引脚TQFN (5mm x 5mm)封装,工作在-40°C至+125°C温度范围。
MAX5088、MAX5089:典型应用电路 MAX5088、MAX5089:典型应用电路 放大+

关键特性

  • 4.5V至5.5V或5.5V至23V的输入电压范围
  • 可调节输出电压低至0.6V
  • 2A输出电流
  • 同步整流驱动器输出(MAX5089),实现高效转换
  • 电阻可编程开关频率,范围200kHz至2.2MHz
  • 外同步和使能(On/Off)输入
  • 时钟输出,用于驱动另一转换器180°反相工作(MAX5089)
  • 内置150mΩ高边n沟道功率MOSFET
  • 上电复位输出(MAX5088)/电源就绪输出(MAX5089)
  • 短路保护
  • 热关断保护
  • 具有高效散热能力的16引脚、TQFN封装,可耗散功率2.7W

应用

  • 汽车无线装置电源
  • IP电话/WLAN接入点
  • 服务器与网络
  • xDSL调制解调器电源

质量和环境数据

产品可靠性报告: MAX5088.pdf 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX5088ATE+
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
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