輸入電壓為 1.8V 至 5.5V 的開關電容器電壓反相器
| Vin (Min) (V) | 1.8 |
| Vin (Max) (V) | 5.8 |
| Vout (Min) (V) | -5.8 |
| Vout (Max) (V) | -1.8 |
| Iout (Max) (A) | 0.04 |
| Regulated outputs (#) | 1 |
| Switching frequency (Min) (kHz) | 40 |
| Switching frequency (Max) (kHz) | 80 |
| Iq (Typ) (mA) | 0.22 |
| Features | Enable |
| Rating | Catalog |
- 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
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.
