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
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.
