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CMOS、微功耗、升压型开关调节器

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主要特征

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主要特征

  • High Efficiency—85% (typ)
  • 70µA Typical Operating Current
  • 1µA Maximum Quiescent Current
  • 2.0V to 16.5V Operation
  • 525mA (Peak) Onboard Drive Capability
  • ±1.5% Output Voltage Accuracy (MAX630)
  • Low-Battery Detector
  • Compact 8-Pin Mini-DIP and SO Packages
  • Pin Compatible with RC4191/2/3

应用/用途

  • +3V至+5V DC-DC转换器
  • +5V至+15V DC-DC转换器
  • 5mW至5W开关电源
  • 延长9V电池使用寿命
  • 高效电池供电DC-DC转换器
  • 不间断5V电源

描述

Maxim's MAX630 and MAX4193 CMOS DC-DC regulators are designed for simple, efficient, minimum-size DC-DC converter circuits in the 5mW to 5W range. The MAX630 and MAX4193 provide all control and power handling functions in a compact 8-pin package: a 1.31V bandgap reference, an oscillator, a voltage comparator, and a 375mA N-channel output MOSFET. A comparator is also provided for low-battery detection.

Operating current is only 70µA and is nearly independent of output switch current or duty cycle. A logic-level input shuts down the regulator to less than 1µA quiescent current. Low-current operation ensures high efficiency even in low-power battery-operated systems. The MAX630 and MAX4193 are compatible with most battery voltages, operating from 2.0V to 16.5V.

The devices are pin compatible with the Raytheon bipolar circuits, RC4191/2/3, while providing significantly improved efficiency and low-voltage operation. Maxim also manufactures the MAX631, MAX632, and MAX633 DC-DC converters, which reduce the external component count in fixed-output 5V, 12V, and 15V circuits. See Table 2 at the end of this data sheet for a summary of other Maxim DC-DC converters.

简化框图

MAX4193、MAX630:引脚配置 MAX4193、MAX630: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