LM2664

开关电容器电压转换器

The 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.

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Inverts Input Supply Voltage

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6-Pin SOT-23 Package

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12-Ω Typical Output Impedance

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91% Typical Conversion Efficiency at 40 mA

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1-µA Typical Shutdown Current