The ultra-small MAX1719/MAX1720/MAX1721 monolithic,CMOS charge-pump inverters accept input voltagesranging from +1.5V to +5.5V. TheMAX1720 operates at12kHz, and the MAX1719/MAX1721 operate at 125kHz.High efficiency, small external components, and logic-controlled shutdown make these devices ideal for bothbattery-powered and board-level voltage conversionapplications.
Oscillator control circuitry and four power MOSFETswitches 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 candeliver a continuous 25mA outputcurrent.
For pin-compatible SOT23 switched-capacitor voltageinverters without shutdown (5-pin SOT23), see theMAX828/MAX829 and MAX870/MAX871 data sheets. Forapplications requiring more power, the MAX860/MAX861deliver up to 50mA. For regulated outputs (up to -2 x VIN),refer to the MAX868. The MAX860/MAX861 and MAX868are available in space-saving µMAX packages.
IN to GND..................................................................-0.3V to +6V
OUT to GND...............................................................-6V to +0.3V
C1+, SHDN,SHDN to GND..............................-0.3V to (VIN+ 0.3V)
C1- to GND................................................(VOUT- 0.3V) to +0.3V
OUT Output Current..........................................................100mA
OUT Short Circuit to GND...............................................Indefinite
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)................696mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Required Field 
