回到顶部

3.3V/5V或可调输出、单节电池DC-DC转换器

对于新设计推荐使用性能更好的器件:MAX1678

产品详情

主要特征

简化框图

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

主要特征

  • 0.8V to 6.0V Input Supply Voltage
  • 0.9V Guaranteed Start-Up Supply Voltage
  • > 80% Efficiency Over Wide Load Range
  • 100µA No-Load Battery Current (VOUT = 3.3V)
  • 1µA Shutdown Mode
  • Up to 250kHz Switching Frequency
  • ±1.5% Reference Tolerance
  • Low-Battery Detector (LBI/LBO)
  • Available in Ultra-Small 8-Pin µMAX® Package (1.11mm high)
  • Circuit Fits in 0.2in²

应用/用途

  • 1节电池供电设备
  • 备用电源
  • 探测器
  • 寻呼机
  • 远端控制

描述

The MAX866 and MAX867 are ultra-small, high-efficiency, CMOS, step-up, DC-DC switching regulators for 1-cell battery-powered systems. The MAX866 accepts a positive input voltage between 0.8V and VOUT and converts it to a higher, pin-selectable output voltage of 3.3V or 5V. The MAX867 adjustable version accepts 0.8V to 6.0V input voltages and generates a higher adjustable output voltage in the 2.7V to 6.0V range. Typical efficiencies are greater than 80%. Typical no-load supply current is 100µA (1µA in shutdown).

The MAX866/MAX867 combine ultra-low quiescent supply current and high efficiency to give maximum battery life. Its high switching frequency permits the use of small, low-cost inductors and capacitors. Additionally, internal peak-current limiting protects the IC.

简化框图

MAX866、MAX867:典型工作电路 MAX866、MAX867:典型工作电路 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