General Description

The ILC6660 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 pumps 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 ILC6660 can also double or split the output voltage of an input powered supply or battery, providing +9.5V or +2.3V at 100mA from a +5V input.

Features

• 0.5V Typ Loss at 100mA Load

• Low 120µA Operating Current

• 5.0Ω Typ Output Impedance

• Guaranteed ROUT < 10Ω for C1 = C2 = 100µF

• Inverts, Doubles or Splits Input Supply Voltage

• Selectable Oscillator Frequency: 5kHz/50kHz

• 90 Typ Conversion Efficiency at 100mA lOUT

• 8-pin SOIC package.

Applications

• Laptop Computers

• Medical Instruments

• Interface Power Supplies

• Hand-Held Instruments

• Operational-Amplifier Power Supplies