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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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
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。


MAX77324EVKIT: MAX77324 评估板

工具和模型

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