MAX1681 - 125mA、频率可选、开关电容电压变换器

MAX1681是Maxim美信半导体公司的一款电荷泵产品，MAX1681是125mA、频率可选、开关电容电压变换器，本站介绍了MAX1681的封装应用图解、特点和优点、功能等，并给出了与MAX1681相关的Maxim元器件型号供参考。

MAX1681 - 125mA、频率可选、开关电容电压变换器 - 电荷泵 - 开关频率高达1MHz，允许使用小尺寸电容 - 美信半导体

产品概述

The MAX1680/MAX1681 inductorless switched-capacitor voltage converters either invert an input voltage of +2.0V to +5.5V or double it while supplying up to 125mA output current. They have a selectable-frequency option that allows the use of small capacitors: 4.7µF (MAX1680), 1µF (MAX1681). With their high output current capability, these charge-pump devices are suitable replacements for inductor-based regulators, which require more expensive external components and additional board space.

The devices' equivalent output resistance (typically 3.5Ω) allows them to deliver as much as 125mA with only a 440mV drop. A shutdown feature reduces quiescent current to less than 1µA. The MAX1680/MAX1681 are available in 8-pin SO packages. For devices that deliver up to 50mA in smaller µMAX® packages, refer to the MAX860/MAX861 data sheet.

关键特性

以下关键特性由Maxim美信半导体提供：

Selectable Switching Frequencies:

125kHz/250kHz (MAX1680)

500kHz/1MHz (MAX1681)

Allow Use of Small Capacitors (1µF for the MAX1681)

125mA Output Current

3.5Ω Output Impedance

1µA Logic-Controlled Shutdown

Configurable as Voltage Inverters or Doublers

+2.0V to +5.5V Input Voltage Range

Available in 8-Pin SO Packages

90% Efficiency

热门应用

接口供电

本地负电源

MOSFET偏置

运算放大器电源

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