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高效率、升压型转换器,带有反接电池保护

产品详情

主要特征

应用/用途

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.5
VIN (V) (max) 5.5
VOUT1 (V) (min) 2
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.15
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.004
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 500
Package/Pins SOT23/6
Budgetary
Price (See Notes)
2.29
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技术文档

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参量

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.5
VIN (V) (max) 5.5
VOUT1 (V) (min) 2
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.15
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.004
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 500
Package/Pins SOT23/6
Budgetary
Price (See Notes)
2.29

主要特征

  • 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)

应用/用途

  • 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

描述

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.

简化框图

MAX1832、MAX1833、MAX1834、MAX1835:引脚配置 MAX1832、MAX1833、MAX1834、MAX1835:引脚配置 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心