The Alpha AS7660G is a DC‑to‑DC charge‑pump converter that generates a negative voltage from a positive source. It supports a wide input range of 1.2 V to 12 V and can produce –5 V for standard 5 V digital systems, making it suitable for ADCs, DACs, operational amplifiers, and multiplexers.
The document includes electrical characteristics, absolute maximum ratings, typical performance graphs, and application circuits. It also covers usage guidelines such as pin connections, oscillator frequency adjustment, and methods for paralleling or cascading multiple devices to achieve lower output resistance or higher voltage multiplication.
| Input voltage range | 1.2 V to 12 V |
|---|---|
| Oscillator frequency | 10 kHz |
| Power conversion efficiency | 95% – 98% |
| Typical supply current | 80 µA |
The oscillator runs at a nominal frequency of 10 kHz.
Two external capacitors are required for the voltage doubler circuit.
Yes, any number of AS7660G converters may be paralleled to lower the output resistance.
For supply voltages greater than 3.5 V, the LV terminal must be left open.