MAX25276

36V、600mA/1.2A、微型Buck转换器,3.5µA IQ

业界最佳、超低IQ、微型Buck转换器,汽车应用的理想选择


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说明

MAX20075/MAX20076/MAX25276为小尺寸、同步buck转换器,集成高边和低边开关。两款器件在3.5V至36V输入电压下提供高达1.2A电流,空载时的静态电流仅为3.5µA。器件在常规6V至18V输入电压范围下提供精度为±2%的输出电压。转换器具备20ns最小导通时间,能够提供较大输入至输出转换比。通过PGOOD信号,可监测电压质量。器件可工作在接近断开的99%占空比,使其成为汽车和工业应用的理想选择。器件提供5V和3.3V两种固定输出电压。此外,使用外部电阻分压器,可将器件配置为1V至10V输出电压。频率内部固定为2.1MHz,允许使用较小的外部元件,以及降低输出纹波、保证无AM干扰。器件在轻载时自动进入跳脉冲模式,空载时具有超低的3.5µA静态电流。器件提供引脚使能的扩频调制,将调制频率引起的EMI辐射发射降至最低。

MAX20075/MAX20076/MAX25276采用小尺寸(3mm × 3mm)、12引脚、TDFN和侧面防潮TDFN封装,带裸焊盘,使用极少的外部元件。

设计资源:利用低IQ Buck转换器改进汽车ECU设计 ›


MAX20075, MAX20076: Typical Operating Circuit MAX20075, MAX20076: Typical Operating Circuit 放大+

关键特性

  • 同步DC-DC转换器,集成FET
    • MAX20075 = 0.6A IOUT
    • MAX20076/MAX25276 = 1.2A IOUT
    • 待机模式下的静态电流仅为3.5µA
  • 20ns最小导通时间,小方案尺寸节省空间
    • 2.1MHz频率
    • 1V至10V可编程降压输出或5V/3.3V固定输出选项
    • 固定2.5ms内部软启动
    • 固定输出电压,输出精度为±2% (5V/3.3V);或者外部电阻可调(1V至10V)输出,精度为±1.5% FB
    • 创新的电流模式控制结构,最大程度降低总电路板空间和BOM数量
  • PGOOD输出和高压EN输入,简化电源排序
  • 保护特性和工作范围是汽车应用的理想选择
    • 3.5V至36V工作VIN范围
    • 40V抛负载保护
    • 99%占空比,低压差
    • -40°C至+125°C汽车级温度范围
    • AEC-Q100认证

应用

  • 汽车
  • 高电压DC-DC转换器
  • 工业

请查看具体的参数规格 Step-Down Switching Regulators (409)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
IOUT1
(A)
(min)(max)(min)(max)
MAX20075 3.54010.6
MAX20076 3.51.2
MAX25276 31.2

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。

MAX20075EVKIT: MAX20075/MAX20076/MAX25276 评估板
MAX20076EVKIT: MAX20075/MAX20076/MAX25276 评估板

工具和模型

  • EE-Sim: MAX25276 设计和仿真
  • 申请可靠性报告: MAX25276 
    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。

    质量管理体系 >
    环境管理体系 >

     
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    类型 编号 标题
    评估板9630MAX20075EVKIT MAX20075/MAX20076/MAX25276 评估板
    评估板9630MAX20076EVKIT MAX20075/MAX20076/MAX25276 评估板