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
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX20019 3.51715
1
1.2
1.5
1.8
2.8
3.3
5
Preset0.5InternalYes2
2200
3200
EE-Sim
TDFN/10
$1.63 @1k
MAX20020 
TDFN/10
查看所有Step-Down Switching Regulators (389)
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。


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
  • 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。

    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9884MAX20019EVKIT MAX20019/MAX20020 评估板
    评估板9884MAX20020EVKIT MAX20019/MAX20020 评估板