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MAX1720：SOT23封装、开关电容电压反相器，带有关断

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

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 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)

MAX1719、MAX1720、MAX1721：典型工作电路 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

数据手册DataSheet

关键参数

技术资料

• DC-DC Conversion Without Inductors

相关产品

• MAX860：50mA、频率可选的开关电容电压变换器
• MAX868：稳压型、可调节、-2倍压反相电荷泵
• MAX870：开关电容电压反相器
• MAX828：开关电容电压反相器

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