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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

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 1.5
VIN (V) (max) 5.5
VOUT1 (V) (min) 3.3
VOUT1 (V) (max) 3.3
IOUT1 (A) (max) 0.15
Switch Type Internal
Preset VOUT (V) 3.3
Output Adjust. Method Preset
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
TDFN/6
Budgetary
Price (See Notes)
2.43
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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) 3.3
VOUT1 (V) (max) 3.3
IOUT1 (A) (max) 0.15
Switch Type Internal
Preset VOUT (V) 3.3
Output Adjust. Method Preset
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
TDFN/6
Budgetary
Price (See Notes)
2.43

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

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

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