MAX1721 - SOT23封装、开关电容电压反相器，带有关断

MAX1721是Maxim美信半导体公司的一款电荷泵产品，MAX1721是SOT23封装、开关电容电压反相器，带有关断，本站介绍了MAX1721的封装应用图解、特点和优点、功能等，并给出了与MAX1721相关的Maxim元器件型号供参考。

MAX1721 - SOT23封装、开关电容电压反相器，带有关断 - 电荷泵 - 尺寸最小的高效偏置电源，用于小型LCD/GaAsFET PA偏置电源: 小尺寸、无需电感、低电源电流 - 美信半导体

产品概述

The ultra-small MAX1719/MAX1720/MAX1721 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.5V to +5.5V. The MAX1720 operates at 12kHz, and the MAX1719/MAX1721 operate at 125kHz. High efficiency, small external components, and logic-controlled shutdown make these devices ideal for both battery-powered and board-level voltage conversion applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. A typical MAX1719/MAX1720/MAX1721 application is generating a -5V supply from a +5V logic supply to power analog circuitry. All three parts come in a 6-pin SOT23 package and can deliver a continuous 25mA output current.

For pin-compatible SOT23 switched-capacitor voltage inverters without shutdown (5-pin SOT23), see the MAX828/MAX829 and MAX870/MAX871 data sheets. For applications requiring more power, the MAX860/MAX861 deliver up to 50mA. For regulated outputs (up to -2 x VIN), refer to the MAX868. The MAX860/MAX861 and MAX868 are available in space-saving µMAX® packages.

关键特性

以下关键特性由Maxim美信半导体提供：

1nA Logic-Controlled Shutdown

6-Pin SOT23 Package

99.9% Voltage Conversion Efficiency

50µA Quiescent Current (MAX1720)

+1.5V to +5.5V Input Voltage Range

25mA Output Current

Requires Only Two 1µF Capacitors (MAX1719/MAX1721)

热门应用

电池供电应用

GaAs PA偏置电源

手持终端、PDA

从正电源产生本地负电源

小型LCD板

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