輸入電壓為 1.8V 至 5.5V 的開關電容倍壓器
| 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 |
| Rating | Catalog |
- Input Voltage for Voltage Doubler: 2.5 V to 5.5 V
- Voltage Divider Splits Voltage: 1.8 V to 11 V
- Doubles or Splits Input Supply Voltage
- 12-Ω Typical Output Impedance
- 90% Typical Conversion Efficiency at 40 mA
- 1-μA Typical Shutdown Current
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.
