MAX16975

28V、1.2A汽车应用降压型转换器,具有低工作电流

汽车级buck转换器,可提供高达1.2A的电流,信息娱乐终端的理想方案


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说明

MAX16975为内置高边开关的1.2A、电流模式降压转换器。器件工作在3.5V至28V输入电压范围,空载时仅消耗45µA静态电流。开关频率通过外部电阻在220kHz至1.0MHz之间调整,并可同步至外部时钟。器件输出电压可通过引脚选择为固定5V输出,或采用外部电阻在1V至10V之间可调。宽输入电压范围使得该器件非常适合汽车以及工业应用。

器件在轻载时工作于跳脉冲模式,有助于降低电流损耗。可调节复位门限确保微控制器能够工作在最低指定电压。保护功能包括:逐周期电流限制、软启动、过压保护以及带自动恢复功能的热关断。器件还具有电源就绪监测器,便于电源排序。

器件采用16引脚QSOP和耐热增强型QSOP-EP封装,并且工作在-40°C至+125°C汽车级温度范围。
MAX16975:典型应用电路 MAX16975:典型应用电路 放大+

关键特性

  • 3.5V至28V宽输入电压范围
  • 可承受42V瞬态输入
  • 5V固定输出或1V至10V可调输出
  • 集成1.2A高边开关
  • 220kHz至1.0MHz可调开关频率
  • 时钟同步输入
  • 内置升压二极管
  • 45µA跳脉冲模式工作电流
  • 关断电流小于10µA
  • 可调节电源就绪输出电平以及定时
  • 使能输入兼容3.3V逻辑电平至42V输入
  • 电流限制、热关断以及过压保护
  • -40°C至+125°C汽车级温度范围

应用

  • 汽车
  • 工业
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16975 3.5281105
Preset
Resistor
1.2InternalYes11000
QSOP/16
$1.41 @1k
查看所有Step-Down Switching Regulators (388)
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。

技术资料

参考原理图 5137 MAX16974/MAX16975/MAX16976 DC-DC转换器的布局考虑

质量和环境数据

申请可靠性报告: MAX16975 
无铅封装的锡(Sn)晶须报告
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 >

 
Status:
Package:
Temperature:

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    类型 编号 PDF 标题
    参考原理图 5137 MAX16974/MAX16975/MAX16976 DC-DC转换器的布局考虑