MAX870 - 开关电容电压反相器

MAX870是Maxim美信半导体公司的一款电荷泵产品，MAX870是开关电容电压反相器，本站介绍了MAX870的封装应用图解、特点和优点、功能等，并给出了与MAX870相关的Maxim元器件型号供参考。

MAX870 - 开关电容电压反相器 - 电荷泵 - 紧凑的、无电感、小外形反相器，封装尺寸为0.025平方英寸，用于偏置GaAsFET PA - 美信半导体

产品概述

The ultra-small MAX870/MAX871 monolithic, CMOScharge-pump inverters accept input voltages rangingfrom +1.4V to +5.5V. The MAX870 operates at 125kHz,and the MAX871 operates at 500kHz. Their high efficiency(90%) and low operating current (0.7mA for theMAX870) make these devices ideal for both battery-poweredand board-level voltage-conversion applications.

Oscillator control circuitry and four power MOSFETswitches are included on-chip. A typical MAX870/MAX871 application is generating a -5V supply from a+5V logic supply to power analog circuitry. Both partscome in a 5-pin SOT23-5 package and can deliver 25mAwith a voltage drop of 500mV.

For a similar device with logic-controlled shutdown,refer to the MAX1720/MAX1721. For applicationsrequiring more power, the MAX860 delivers up to 50mAwith a voltage drop of 600mV, in a space-saving µMAXpackage.

关键特性

以下关键特性由Maxim美信半导体提供：

5-Pin SOT23-5 Package

99% Voltage Conversion Efficiency

Invert Input Supply Voltage

0.7mA Quiescent Current (MAX870)

+1.4V to +5.5V Input Voltage

Require Only Two Capacitors

25mA Output Current

Shutdown Control

热门应用

电池供电设备

蜂窝电话

手持终端、PDA

从5V逻辑电源产生本地-5V电源

医疗仪器

小型LCD板

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