LM2660/LM2661 Switched Capacitor
Voltage Converter
September 1999
LM2660/LM2661 Switched Capacitor
Voltage Converter
General Description
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.
With an operating current of only 120 µA and operating efficiency greater than 90% at most loads, the LM2660/LM2661 provides ideal performance for battery powered systems.
The LM2660/LM2661 may also be used as a positive
voltage doubler.
The oscillator frequen...