MAX20075

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

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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

工具和模型

  • EE-Sim: MAX20075 设计和仿真
  • 申请可靠性报告: MAX20075 
    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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