General Description
The MAX660 monolithic, charge-pump voltage inverter converts a +1.5V to +5.5V input to a corresponding -1.5V to -5.5V output. Using only two low-cost capacitors, the charge pump’s 100mA output replaces switching regulators, eliminating inductors and their associated cost, size, and EMI. Greater than 90% efficiency over most of its load-current range combined with a typical operating current of only 120µA provides ideal performance for both battery-powered and board level voltage conversion applications. The MAX660 can also double the output voltage of an input power supply or battery, providing +9.35V at 100mA from a +5V input.

FEATUREs
● Small Capacitors
● 0.65V Typ Loss at 100mA Load
● Low 120µA Operating Current
● 6.5Ω Typ Output Impedance
● Guaranteed ROUT < 15W for C1 = C2 = 10mF
● Pin-Compatible High-Current ICL7660 Upgrade
● Inverts or Doubles Input Supply Voltage
● Selectable Oscillator Frequency: 10kHz/80kHz
● 88% Typ Conversion Efficiency at 100mA (IL to GND)