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.
| Vin (min) (V) | 1.8 |
| Vin (max) (V) | 5.5 |
| Vout (min) (V) | -5.5 |
| 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 |
| Operating temperature range (°C) | -40 to 85 |
| Rating | Catalog |
| Type | Charge pump |
| SOT-23 (DBV) | 6 | 8.12 mm² 2.9 x 2.8 |
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