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MAX1720 Datasheet PDF - Maxim Integrated

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Part NumberMAX1720 MaximIC
Maxim Integrated MaximIC
DescriptionSOT23, Switched-Capacitor Voltage Inverters with Shutdown
MAX1720 Datasheet PDF : MAX1720 pdf       
MAX1721EUT image

General Description
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.

♦ 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)

  Local Negative Supply from a Positive Supply
  Small LCD Panels
  GaAs PA Bias Supply
  Handy-Terminals, PDAs
  Battery-Operated Equipment

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