MAX8969EVKIT

MAX8969评估板


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说明

MAX8969评估板(EV kit)是完全安装并经过测试的PCB板,用于评估MAX8969 IC。该款IC是简单的1A升压转换器,采用小尺寸封装,适用于任何单节锂离子电池供电应用。IC具有保护功能,如输入欠压锁定、短路和热关断。

轻载的条件下,IC可无缝切换到跳脉冲模式,以提高效率。这种模式下,仅在需要时进行开关工作,通过降低开关频率和电源电流来保持高效工作。

当输入电压接近输出电压时,为提高效率,提供两种特殊的工作模式:跟踪模式和自动跟踪模式。这些模式允许用户在低静态电流(IQ)与boost模式的瞬态响应之间折中选择。两种模式下,p沟道MOSFET作为限流开关,VOUT保持跟踪VIN。然而,跟踪模式下,禁止boost电路,系统利用EN、TREN输入控制boost功能(IQ = 30µA);自动跟踪模式(ATM)下,使能boost电路,当VIN下降至目标VOUT的95%时,器件自动切换到boost模式(IQ = 60µA)。

关键特性

  • 紧凑的布局,小尺寸外部元件
  • 高达1A输出电流
  • 2.5V至5.5V输入电压范围
  • 内部同步整流器,效率高达90%
  • 1A限流跟踪模式
  • 自动跟踪模式
  • 经过验证的PCB布局
  • 完全安装并经过测试

应用

  • 蜂窝电话
  • 电子书
  • GPS、PND
  • 移动互联网设备
  • 智能电话
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。

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