MAX20019

3.2MHz、500mA、双通道、降压型转换器,适合汽车摄像机应用

超小尺寸、3.2MHz、双通道、500mA、摄像机模块通用PMIC


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说明

MAX20019/MAX20020为2.2MHz和3.2MHz、双通道、降压型转换器,集成高边和低边MOSFET。高压降压型转换器设计用于在高达17V输入电压下连续工作。输出电压由工厂预设。Buck 1预设为3.3V、3.0V或2.8V。Buck 2预设为1.8V、1.5V、1.2V或1V。另一选项为Buck 1设为5V,Buck 2设为3.3V。

低压buck具有固定频率PWM工作模式,开关频率为2.2MHz或3.2MHz。高频操作实现全陶瓷电容设计,允许使用小尺寸外部元件。片上低阻开关在确保高效的同时最大程度降低寄生电感。MAX20019上的500mV使能滞回允许使用低成本、长线同轴电缆,即使在低速启动情况下也没问题。MAX20020的Buck 1在VSUP高于5.5V后启动,Buck 1由EN输入驱动。

安全特性包括:过压(OV)保护、逐周期限流,以及带自动恢复功能的热关断保护。buck转换器彼此180°错相工作,最大程度降低输入电流纹波。

MAX20019, MAX20020: Functional Diagrams MAX20019, MAX20020: Functional Diagrams 放大+

关键特性

  • 较小的方案尺寸
    • 2mm x 3mm x 0.75mm、10引脚、TDFN封装,带裸焊盘
    • 2.2MHz和3.2MHz工作频率,使系统尺寸更小
    • 软启动,无需外部元件
  • 电缆灵活性
    • 500mV使能滞回,支持低速启动条件下的低成本、长线电缆传输
  • 降低EMI
    • 扩频选项
    • 引脚排列提供严格的开关节点PCB布局
  • 自保护
    • 过压保护、热关断、短路保护
  • 支持汽车应用
    • 3.5V至17V宽输入电压范围,支持同轴电缆供电
    • 汽车级工作温度范围:-40°C至+125°C
    • AEC-Q100认证

应用

  • 汽车负载点
  • 全景摄像机电源

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.

MAX20019EVKIT: MAX20019/MAX20020 评估板
MAX20020EVKIT: MAX20019/MAX20020 评估板

工具和模型

  • EE-Sim: MAX20019 设计和仿真
  • 申请可靠性报告: MAX20019 
    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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    类型 编号 标题
    评估板9884MAX20019EVKIT MAX20019/MAX20020 评估板
    评估板9884MAX20020EVKIT MAX20019/MAX20020 评估板