LM2664 1.8V to 5.5Vin Switched Capacitor Voltage Converter | TI.com

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1.8V to 5.5Vin Switched Capacitor Voltage Converter



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.

The LM2664 operates at 160-kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 220 µA (operating efficiency greater than 91% with most loads) and 1-µA typical shutdown current, the LM2664 provides ideal performance for battery-powered systems.


  • Inverts Input Supply Voltage
  • 6-Pin SOT-23 Package
  • 12-Ω Typical Output Impedance
  • 91% Typical Conversion Efficiency at 40 mA
  • 1-µA Typical Shutdown Current


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Operating temperature range (C) Type Rating Package Group
LM2664 Order now 1.8     5.8     -5.8     -1.8     0.04     1     40     80     -40 to 85     Charge Pump     Catalog     SOT-23 | 6