The LM2665 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of 2.5 V to 5.5 V. Two low-cost capacitors and a diode (needed during start-up) are used in this circuit to provide up to 40 mA of output current. The LM2665 can also work as a voltage divider to split a voltage in the range of 1.8 V to 11 V in half.
The LM2665 operates at 160-kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 650 µA (operating efficiency greater than 90% with most loads) and
1-µA typical shutdown current, the LM2665 provides ideal performance for battery powered systems.
| Vin (min) (V) | 2.5 |
| Vin (max) (V) | 5.8 |
| Vout (min) (V) | 1.8 |
| Vout (max) (V) | 11 |
| Iout (max) (A) | 0.04 |
| Regulated outputs (#) | 1 |
| Switching frequency (min) (kHz) | 40 |
| Switching frequency (max) (kHz) | 80 |
| Iq (typ) (mA) | 0.65 |
| 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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