开关电容倍压器

 

器件号	Replacement	Explanation

说明

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The ultra-small MAX1682/MAX1683 monolithic, CMOS charge-pump voltage doublers accept input voltages ranging from +2.0V to +5.5V. Their high voltage-conversion efficiency (over 98%) and low operating current (110µA for MAX1682) make these devices ideal for both battery-powered and board-level voltage-doubler applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. The MAX1682 operates at 12kHz, and the MAX1683 operates at 35kHz. A typical application includes generating a 6V supply to power an LCD display in a hand-held PDA. Both parts are available in a 5-pin SOT23 package and can deliver 30mA with a typical voltage drop of 600mV.

MAX1682、MAX1683：典型工作电路 放大+

关键特性

• 5-Pin SOT23 Package
• +2.0V to +5.5V Input Voltage Range
• 98% Voltage-Conversion Efficiency
• 110µA Quiescent Current (MAX1682)
• Requires Only Two Capacitors
• Up to 45mA Output Current

应用

• 蜂窝电话
• 手持终端
• PDA
• 小型LCD板