MAX1834:高效率、升压型转换器,带有反接电池保护

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.

关键特性
  • 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)
MAX1832、MAX1833、MAX1834、MAX1835:引脚配置
MAX1832、MAX1833、MAX1834、MAX1835:引脚配置
应用
  • 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
数据手册DataSheet
语言下载文件备注
英文MAX1832-MAX1835.pdfRev 2; 07/2005
关键参数
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingICC
(mA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxmaxtypmaxSee Notes
MAX18321.55.525.5-0.15ResistorInternalYes0.00411500SOT/6$2.18 @1k
MAX18333.33.33.3Preset
  • SOT/6
  • TDFN-EP/6
MAX183425.5-ResistorSOT/6
开发工具
技术资料
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1834EUT#G16生产中SOT,;6引脚;9mm²-40°C至+85°C
MAX1834EUT#TG16生产中SOT,;6引脚;9mm²-40°C至+85°C
MAX1834EUT+生产中SOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1834EUT+T生产中SOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1834EUT-T停止供货MAX1834EUT+SOT,;6引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX1832-MAX1835.pdf MAX1834
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引脚配置 MAX1835