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+5V至±10V电压变换器

同时产生正、负双输出

产品详情

主要特征

简化框图

Technical Docs

数据资料 +5V至±10V电压变换器 Jul 23, 2019

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主要特征

  • 95% Voltage-Conversion Efficiency
  • 85% Power-Conversion Efficiency
  • +2V to +6V Voltage Range
  • Only Four External Capacitors Required (MAX680)
  • No Capacitors Required (MAX681)
  • 500µA Supply Current
  • Monolithic CMOS Design

应用/用途

  • +5V至±10V逻辑电源
  • 从3V锂电池产生±6V
  • 电池供电应用
  • 数据采集
  • 手持式仪表(PDA、掌上电脑)
  • 运算放大器电源
  • 面板表

描述

The MAX680/MAX681 are monolithic, CMOS, dual charge-pump voltage converters that provide ±10V outputs from a +5V input voltage. The MAX680/MAX681 provide both a positive step-up charge pump to develop +10V from +5V input and an inverting charge pump to generate the -10V output. Both parts have an on-chip, 8kHz oscillator. The MAX681 has the capacitors internal to the package, and the MAX680 requires four external capacitors to produce both positive and negative voltages from a single supply.

The output source impedances are typically 150Ω, providing useful output currents up to 10mA. The low quiescent current and high efficiency make this device suitable for a variety of applications that need both positive and negative voltages generated from a single supply.

The MAX864/MAX865 are also recommended for new designs. The MAX864 operates at up to 200kHz and uses smaller capacitors. The MAX865 comes in the smaller µMAX® package.

简化框图

MAX680、MAX681:典型工作电路 MAX680、MAX681:典型工作电路 Zoom icon

Technical Docs

数据资料 +5V至±10V电压变换器 Jul 23, 2019

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