MAX20040

汽车应用、2V至36V、2.2MHz、0.6A/1.2A升/降压转换器,集成H桥架构

业界首款2MHz汽车应用升/降压转换器,2V冷启动至VBATT无缝工作


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说明

MAX20039/MAX20040 IC是小尺寸、同步升/降压型转换器家族,集成高边和低边开关。MAX20040在2V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52μA。IC输出电压精度高达±2%。通过PGOOD信号,可监测电压质量。

MAX20039/40提供5V固定输出电压和4.0V至12V可编程输出电压。详细情况请参考定购信息。频率可在220kHz至2.2MHz范围内调节,允许使用较小的外部元件、降低输出纹波,以及保证无AM干扰。MAX20040B和MAX20040D提供静态电流仅为52uA的跳脉冲模式。IC可工作在扩频调制模式,将调制频率引起的EMI辐射发射降至最低。

MAX20039/MAX20040采用小尺寸(4mm x 4mm)、20引脚、侧面可润湿TQFN封装,使用极少的外部元件。

设计资源: Provide a Safe Power Path from the Car Battery to Remote Cameras ›

关键特性

  • 满足严格的汽车级质量和可靠性要求
    • 2V至36V工作VIN,允许工作在“冷启动”条件
    • 可承受高达40V输入瞬态
    • EN引脚兼容3.3V至40V
    • 0.6A (最大值)输出电流(MAX20039)
    • 1.2A (最大值)输出电流(MAX20040)
    • -40°C至+125°C汽车级温度范围
    • AEQ-100认证
    • 提高效率的同时,降低BOM成本、减小电路板空间
    • 集成FET H桥架构
    • 固定输出电压
    • 20引脚SWTQFN封装
  • 低静态电流帮助设计师满足严格的OEM电流要求(仅限B和D版本)
    • 待机模式下的静态电流仅为52μA
    • 关断模式下静态电流仅为10μA (最大值)
  • 高开关频率允许使用小尺寸外部元件
    • 200kHz至2.2MHz工作频率
    • 跳脉冲模式,提高低功率工作效率(仅限B和D版本)
    • 固定频率PWM模式
    • 外部频率同步
  • 降低开关频率引起的EMI辐射
    • 可使能或禁止扩频

应用

  • 车身电子
  • 信息娱乐系统
  • 负载点电源
  • 负载点电源
  • 启停系统
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
Preset VOUT
(V)
IOUT1
(A)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Design ToolsPackage/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxmaxSee Notes
MAX20039 24012
3.3
5
0.60.6
Preset
Resistor
InternalYesYes1
Step-Down
Step-Up
Step-Up/Down
200
300
400
500
1000
2200
EE-Sim
TQFN/20
TQFN-CU/20
-40 to +85
-40 to +125
$1.67 @1k
MAX20040 1.21.2
TQFN/20
TQFN-CU/20
$1.89 @1k
查看所有Step-Down/Up Switching Regulators (30)
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。


MAX20040EVKIT: MAX20039/MAX20040评估套件

工具和模型

  • EE-Sim: MAX20040 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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    相关资料


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    14V Input, 3A High-Efficiency Buck Converter in WLP or QFN

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    MAX20458
    36V Boost Controller with 3.5A Synchronous Buck Converter For Automotive Applications

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    MAX17634A
    4.5V to 36V, 4.25A, High-Efficiency, Synchronous Step-Down DC-DC Converter

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    4.5V to 36V, 4.25A, High-Efficiency, Synchronous Step-Down DC-DC Converter

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    4.5V to 36V, 4.25A, High-Efficiency, Synchronous Step-Down DC-DC Converter

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    类型 编号 标题
    评估板10276MAX20040EVKIT MAX20039/MAX20040评估套件