MAX16977

36V、2A、2.2MHz、超低电流降压型转换器

直接将汽车电池电压转换至3.3V,开关频率高于AM无线频段,电流可达2A


点击查看特定型号的库存状况。

说明

MAX16977为内置高边开关的2A、电流模式降压转换器。器件设计工作在3.5V至36V输入电压范围,空载时仅消耗30µA静态电流。开关频率通过外部电阻在1MHz至2.2MHz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输出或者1V至10V可调输出。宽输入电压范围以及在瞬态欠压下的高占空比工作特性,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。保护功能包括:过流限制、过压、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。

器件工作在-40°C至+125°C汽车级温度范围,采用16引脚TSSOP和TQFN (5mm x 5mm)封装,带有裸焊盘。
MAX16977: Typical Operating Circuit MAX16977: Typical Operating Circuit 放大+

关键特性

  • 3.5V至36V宽输入电压范围
  • 可承受42V输入瞬变
  • 瞬态欠压下采用高占空比工作
  • 5V固定输出,或1V至10V可调输出电压
  • 内部集成2A高边开关(70mΩ,典型值)
  • 快速负载瞬态响应,电流模式架构
  • 可调整开关频率(1MHz至2.2MHz)
  • 时钟同步输入
  • 30µA待机工作电流
  • 5µA典型关断电流
  • 频谱扩展(可选)
  • 过压、欠压、过热以及短路保护

应用

  • 汽车
  • 高压输入DC-DC转换器
  • 工业
  • 负载点应用
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypePower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16977 3.5361105
Preset
Resistor
2InternalYes12200
TQFN/16
TSSOP/16
$2.00 @1k
查看所有Step-Down Switching Regulators (367)
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。


MAX16977EVKIT: MAX16977评估板

技术资料

用户指南 5861 EE-SIM Design and Simulation Environment User Guide

质量和环境数据

申请可靠性报告: MAX16977 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX16977RATE+
  • MAX16977RATE+T
  • MAX16977RATE/V+
  • MAX16977RATE/V+T
  • MAX16977RAUE+
  • MAX16977RAUE+T
  • MAX16977RAUE/V+
  • MAX16977RAUE/V+T
  • MAX16977SATE+
  • MAX16977SATE+T
  • MAX16977SATE/V+
  • MAX16977SATE/V+T
  • MAX16977SAUE+
  • MAX16977SAUE+T
  • MAX16977SAUE/V+
  • MAX16977SAUE/V+T
  • 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。

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    类型 编号 PDF 标题
    用户指南 5861 EE-SIM Design and Simulation Environment User Guide
    类型 编号 标题
    评估板7651MAX16977EVKIT MAX16977评估板