LM2661 Datasheet (National Semiconductor) - Switched Capacitor Voltage Converter

LM2661, Switched Capacitor Voltage Converter

The LM2660/LM2661 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage.

The LM2660/LM2661 uses two low cost capacitors to provide 100 mA of output current without the cost, size, and EMI related to inductor based converters.

LM2661 Features

* n n n n n n Inverts or doubles input supply voltage Narrow SO-8 and Mini SO-8 Package 6.5Ω typical output resistance 88% typical conversion efficiency at 100 mA (LM2660) selectable oscillator frequency: 10 kHz/80 kHz (LM2661) low current shutdown mode Applications n n n n n n Laptop computers Cellu