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MAX77324

MAX77324

4.8VIN、1.5A、高效、超小尺寸Buck转换器

超小尺寸、6.89mm2总方案面积、1.5A buck转换器，93%效率，适用于单节电池应用

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概述

说明

MAX77324为单通道、高效、同步降压型(buck)转换器，可提供高达1.5A电流。器件的总方案尺寸为6.89mm2、效率高达93%、静态电流40µA，优化用于空间受限的电池供电便携式应用。

器件工作在2.5V至4.8V输入电压范围，支持Li+电池供电应用。输出电压可在0.6V至2V范围内调节，在整个温度范围内的精度优于2%。器件采用恒定导通时间PWM控制方法。标称2MHz开关频率允许使用小尺寸0603电感，有效减小总方案占位面积。为提高轻载效率，也实施了自动SKIP模式。器件拥有低输出电压纹波、优异的电源和负载调整率，以及瞬态响应。专用的使能引脚支持简单的硬件控制。

内置欠压锁定(UVLO)、软启动、有源输出放电、逐周期短路和热关断保护，确保在异常工作条件下安全操作。

器件采用节省空间的1.22mm x 0.85mm、6焊球晶圆级封装(WLP)。

MAX77324: 1-Cell to Core Voltage Buck Converter Application Circuit MAX77324: 1-Cell to Core Voltage Buck Converter Application Circuit 放大+

关键特性

  • 1.5A输出电流降压型转换器
  • 2.5V至4.8V VIN范围
  • 0.6V至2V可调节VOUT范围，±2%精度
  • 93%峰值效率(3.8VIN、1.8VOUT)
    • 跳脉冲模式，轻载时保持高效
    • 40µA静态电流
    • 1µA关断电流
  • 2MHz标称开关频率
  • 使能引脚，支持直接硬件控制
  • 逐周期电感限流
  • UVLO、软启动、有源输出放电、短路和热关断保护
  • 1.22mm x 0.85mm、6焊球WLP封装
    • 6.89mm2总方案面积
    • 使用小尺寸0603 0.47µH电感

应用

  • 单节电池供电设备
  • 便携/可穿戴设备
  • 物联网(IoT)设备
  • 空间受限的设备

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)		Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX77324 2.54.80.62Resistor1.5InternalYes12000EE-Sim
WLP/6
$0.76 @1k
查看所有Step-Down Switching Regulators (404)
Pricing Notes:
价格仅供参考，用于同类产品的比较。所提供报价为美元，需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题，请参考：价格与供货网站或与指定代理商联系。

设计资源


MAX77324EVKIT: MAX77324 评估板

质量和环境数据

申请可靠性报告: MAX77324 
无铅封装的锡（Sn）晶须报告

其它资源

4 Ways to Extend Runtime of Small, Battery-Powered Electronics


工具和模型

  • EE-Sim: MAX77324 设计和仿真
  • MAX77324 SIMPLIS Schematic

    •

    质量与环境

    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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    参考设计

    类型 编号 标题
    评估板9786MAX77324EVKIT MAX77324 评估板