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MAX1832, MAX1833, MAX1834, MAX1835
高效率、升压型转换器,带有反接电池保护


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概述
完整的数据资料 (PDF, 388kB)
英文 下载数据资料(PDF)下载
The MAX1832-MAX1835 are high-efficiency step-up converters with complete reverse battery protection that protects the device and the load when the battery is reversed. They feature a built-in synchronous rectifier, which allows for over 90% efficiency and reduces size and cost by eliminating the need for an external Schottky diode.

These step-up converters operate from a +1.5V to +5.5V input voltage range and deliver up to 150mA of load current. The MAX1833EUT/MAX1835EUT (SOT devices) have a fixed 3.3V output voltage. The MAX1833ETT30 (TDFN device) has a fixed 3.0V output voltage. The MAX1832/MAX1834 have adjustable outputs from +2V to +5.5V. In shutdown, the MAX1832/MAX1833 connect the battery input to the voltage output, allowing the input battery to be used as a backup or real-time clock supply when the converter is off (see Selector Guide).

MAX183_EUT devices are available in a miniature 6-pin SOT23 package. The MAX1833ETT30 is available in a 3mm x 3mm thin DFN package. The MAX1832EVKIT is available to speed designs.

现备有评估板:  MAX1833EVKIT  

关键特性   应用/使用
  • Reverse Battery Protection for DC-DC Converter and Load
  • Up to 90% Efficiency
  • No External Diode or FETs Needed
  • Internal Synchronous Rectifier
  • 4µA Quiescent Current
  • <1µA Shutdown Supply Current
  • +1.5V to +5.5V Input Voltage Range
  • Accurate active-low SHDN Threshold for Low-Battery Cutoff
  • BATT Connected to OUT in Shutdown for Backup Power (MAX1832/MAX1833)
  • RST-bar Output (MAX1833/MAX1835)
  • Fixed 3.3V/3.0V Output Voltage
  • Adjustable Output Voltage (MAX1832/MAX1834)
  • Up to 150mA Output Current
  • Tiny 6-Pin SOT23 Package
  • Tiny 6-Pin Thin QFN Package (MAX1833ETT30)

 
  • 备用电池
  • 无绳电话
  • 数码相机
  • 手持式仪表
  • 本地3.3V至5V转换电源
  • 医疗诊断设备
  • 寻呼机
  • PC卡
  • 远端无线发送器

    Key Specifications:  Step-Up Switching Regulators
    Part Number VIN
    (V)
    VIN
    (V)
    VOUT
    (V)
    VOUT
    (V)
    Preset VOUT
    (V)
    Max. IOUT
    (A)
    Max. IOUT
    (A)
    Output Adjust. Method DC-DC Outputs Oper. Freq.
    (kHz)
    Package/Pins Smallest Available Pckg.
    (mm2)
    Price
    min max min max max w/pins See Notes
    MAX1832  1.5 5.5 2 5.5 - 0.15 0.15 Resistor 1 500
    SOT/6
    9 $1.52 @1k
    MAX1833  3.3 3.3 3.3 Preset
    SOT/6
    TDFN-EP/6
    $1.52 @1k
    MAX1834  2 5.5 - Resistor
    SOT/6
    $1.52 @1k
    MAX1835  3.3 3.3 3.3 Preset
    SOT/6
    $1.52 @1k
    查看所有Step-Up Switching Regulators (90)

    图表
    MAX1832、MAX1833、MAX1834、MAX1835:引脚配置
    引脚配置

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    参考文献: 19-1802; Rev. 2; 2005-07-04
    本页最后一次更新: 2009-10-26


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