MAX77801

高效率升/降压稳压器

2A、高效率、升压和降压操作,包括升压和降压模式之间平滑转换


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说明

MAX77801为高电流、高效率、升压/降压稳压器,目标应用为使用锂离子电池或类似化学成分的移动应用。MAX77801采用四开关H桥配置,支持降压和升压工作模式。升/降压提供2.60V至4.1875V输出电压范围和高达2A输出电流。

独特的控制算法允许高效率、出色电源/负载瞬态响应性能,以及降压和升压模式之间平滑切换。

DVS (动态电压调节)输入允许主机处理器在两种预编程输出电压之间切换,将给定负载条件下的功率损耗降至最低。缓升和缓降摆率可通过I²C设置。

MAX77801采用I²C兼容的2线串行接口,包括一根双向串行数据线(SDA)和一根串行时钟线(SCL),支持高达3.4MHz的SCL时钟速率。

MAX77801: Typical Application Circuit High efficiency, high current buck boost regulator with I2C interface typical application circuit 放大+

关键特性

  • 2A、高效率、升压和降压操作,包括升压和降压模式之间平滑转换
  • 灵活性,支持各种设计
    • VOUT范围为2.60V至4.1875V,补偿为12.5mV
    • 高速(高达3.4MHz) I²C串行接口
  • 低静态电流、高效率,动态电压调节使系统效率更高
    • DVS输入
    • 效率最高达97%
    • 55μA静态电流
  • 高开关频率和小型封装减小方案尺寸
    • 2.5MHz开关频率
    • 20焊球WLP (0.4mm焊球间距)
  • 安全性,增强器件和系统可靠性
    • POK输出
    • 软启动
    • True Shutdown™
    • 热关断和短路保护

应用

  • 电池供电应用
  • 智能手机和平板电脑
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
VOUT1 Tolerance
(±%)
IOUT1
(A)
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
MAX77801 2.35.52.64.1875
3.3
3.4
122PresetInternalYesYes0.071
Step-Down
Step-Up
2500EE-Sim
TQFN-CU/20
WLP/20
-40 to +85$1.10 @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。


MAX77801EVKIT: MAX77801评估板

技术资料

设计指南 660 Regulator Topologies for Battery-Powered Systems

质量和环境数据

产品可靠性报告: MAX77801.pdf 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX77801 设计和仿真
  • CAD Symbols and Footprints

  • MAX77801ETP+
  • MAX77801ETP+T
  • MAX77801EWP+
  • MAX77801EWP+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 >

     
    Status:
    Package:
    Temperature:

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    类型 编号 PDF 标题
    设计指南 660 Regulator Topologies for Battery-Powered Systems
    类型 编号 标题
    评估板8791MAX77801EVKIT MAX77801评估板