MAX77827

5.5V输入、1.8A/3.1A开关升/降压转换器,6μA IQ

高效率、低IQ升/降压转换器


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说明

MAX77827为高效率升/降压转换器,适用于单节锂离子供电应用,6μA典型静态电流为业界最低。器件支持1.8V至5.5V输入电压范围,输出电压范围为2.3V至5.3V。IC提供两种不同的开关电流(1.8A和3.1A),根据给定的负载电流需求优化外部元件尺寸。使用1.8A开关限流选项时,IC在降压模式下可支持高达1.0A负载电流,在升压模式下(VIN = 3.0V,VOUT = 3.3V)支持900mA负载电流。

为电池供电的便携式应用提供电源轨的DC/DC转换器方案中,96%峰值效率使该IC成为最佳选择之一,

IC具有可调节输出电压功能,可通过单个电阻在2.3V至5.3V范围内设置。2个GPIO引脚支持强制PWM使能和电源就绪(POK)指示。独特的控制算法允许高效、卓越的电源/负载瞬态响应,以及在降压和升压模式之间平稳切换。这些性能可以提供设计上的灵活性,允许IC覆盖较宽的应用范围和应用场景,同时最大程度减小电路板面积。

MAX77827采用1.61mm x 2.01mm、12焊球晶圆级封装(WLP)。

MAX77827: Simplified Block Diagram MAX77827: Simplified Block Diagram 放大+

关键特性

  • 1.8V至5.5V输入电压范围
  • 2.3V至5.3V单电阻可调节输出电压
  • 1.6A最大输出电流(3.1A ILIM选项,降压模式)
  • 900mA最大输出电流(1.8A ILIM选项,升压模式,3.0VIN,3.3VOUT)
  • 96%峰值效率(3.3VIN,3.3VOUT)
  • 跳脉冲模式,轻载时保持高效
  • 6μA超低典型静态电流(@ TJ = +25°C)
  • 2.5MHz标称开关频率
  • 使能引脚
  • GPIO引脚,便于系统设计
    • FPWM (强制PWM)模式选择引脚
    • POK指示引脚
  • UVLO、软启动、有源输出放电、过流和热关断保护
  • 1.61mm x 2.01mm、12焊球WLP封装

应用

  • 单节Li+电池供电设备
  • 智能手机/便携/可穿戴设备
  • 物联网(IoT)设备
  • NB-IoT设备
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
VOUT1 Tolerance
(±%)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalICC
(mA)
DC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Design ToolsPackage/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxminmaxmaxSee Notes
MAX77827 NEW!1.85.52.35.33.311.5
Preset
Resistor
InternalYesYes11
Step-Down
Step-Up
2500EE-Sim
FC2QFN/14
WLP/12
-40 to +125$0.84 @1k
查看所有Step-Down/Up Switching Regulators (28)
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。


MAX77827EVKIT: MAX77827 评估套件

技术资料

应用笔记 7002 Choose the Right Buck-Boost for Your IoT Tracker

质量和环境数据

申请可靠性报告: MAX77827 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX77827 设计和仿真
  • CAD Symbols and Footprints

  • MAX77827BEWC+T
  • MAX77827CEWC+T
  • MAX77827DEWC+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。

    质量管理体系 >
    环境管理体系 >

     
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    类型 编号 PDF 标题
    应用笔记 7002 Choose the Right Buck-Boost for Your IoT Tracker