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Documents LM2664
SNVS005E – NOVEMBER 1999 – REVISED DECEMBER 2014 LM2664 Switched Capacitor Voltage Converter
1 Features 3 Description The LM2664 CMOS charge-pump voltage converter
inverts a positive voltage in the range of 1.8 V to 5.5
V to the corresponding negative voltage of -1.8 V to
-5.5 V. The device uses two low-cost capacitors to
provide up to 40 mA of output current. 1 Inverts Input Supply Voltage
6-Pin SOT-23 Package
12-О© Typical Output Impedance
91% Typical Conversion Efficiency at 40 mA
1-ВµA Typical Shutdown Current 2 Applications Cellular Phones
Pagers
PDAs
Operational Amplifier Power Suppliers
Interface Power Suppliers
Handheld Instruments The LM2664 operates at 160-kHz oscillator frequency
to reduce output resistance and voltage ripple. With
an operating current of only 220 ВµA (operating …
