MAX15088

高效、3A、降压型开关调节器,带有跟踪功能

尺寸最小、效率最高的3A解决方案,带有跟踪输入


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说明

MAX15088高效、电流模式、同步降压型开关调节器内置功率开关,可提供高达3A的输出电流。器件工作于2.7V至5.5V电压,输出电压范围为0.6V至输入电压的94%,非常适合分布式供电系统、便携设备和预稳压应用。

MAX15088采用电流模式控制架构,内置高增益跨导误差放大器。电流模式控制架构简化了补偿设计,确保逐周期限流并快速响应电源和负载的瞬态变化。

MAX15088提供可选择的跳脉冲模式,轻载时有助于降低电流消耗、获得更高效率。低RDS(ON)集成开关保证在重载下具有高效率,并使寄生电感降至最小,与分立方案相比,大大简化了布局设计。简单的布局和封装保证了新设计的一次通过率。

MAX15088采用1MHz、工厂校准的固定频率PWM工作模式。高开关频率结合PWM电流模式架构,允许采用紧凑的全陶瓷电容设计。

MAX15088提供一个外部基准输入,它可以用作跟踪器件启动进入PREBIAS输出;PGOOD开漏输出可用作中断或用于电源排序。

MAX15088采用9焊球(3 x 3阵列)、1.5mm x 1.5mm WLP封装,工作在-40°C至+85°C温度范围。

关键特性

  • 5V供电条件下,内部高边和低边MOSFET分别具有30mΩ (典型值)和18mΩ (典型值)的RDS(ON)
  • 整个温度范围内可连续输出3A电流
  • 3.3V、3A输出时,效率高达96%
  • 在整个负载、电源和温度范围内,输出电压精度保持在±1%
  • 2.7V至5.5V工作电压
  • 逐周期过流保护
  • 0.6V至(0.94 x VIN)可调输出
  • 工厂校准的1MHz开关频率
  • 使用低ESR陶瓷输出电容可保证稳定工作
  • 安全启动至预偏置输出(用于电源跟踪)
  • 上电/掉电时,外部基准输入跟踪
  • 跳脉冲模式
  • 使能输入/电源就绪输出
  • 过流和过热完全保护
  • 输入欠压锁定

应用

  • 分布式供电系统
  • 笔记本电脑电源
  • 便携式设备
  • 线性稳压器的前置稳压
产品可靠性报告: MAX15088.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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