The MAX660 is a monolithic, charge-pump voltage inverter converts a +1.5V to +5.5V input to a corresponding -1.5V to -5.5V output. Using only two low-cost capacitors, the charge pump's 100mA output replaces switching regulators, eliminating inductors and their associated cost, size, and EMI.
The MAX660 converts a +1.5 V to +5.5 V input into a corresponding –1.5 V to –5.5 V output, or doubles the input voltage to provide a positive output. It uses only two low‑cost capacitors and delivers up to 100 mA output current while drawing a typical quiescent current of 120 µA.
The device is available in 8‑pin DIP and SO packages for commercial (0 °C to +70 °C), industrial (‑40 °C to +85 °C) and military (‑55 °C to +125 °C) temperature ranges. Features include selectable oscillator frequencies (10 kHz or 80 kHz), pin‑compatible upgrade of the ICL7660, and an output source resistance of about 6.5 Ω.
| Input voltage range | +1.5 V to +5.5 V |
|---|---|
| Output voltage range (inverter mode) | –1.5 V to –5.5 V |
| Maximum continuous output current | 120 mA |
| Typical conversion efficiency at 100 mA | ≈ 88 % |
| Typical operating (quiescent) current | 120 µA |
| Output source resistance (typical) | 6.5 Ω |
| Operating temperature range (commercial) | 0 °C to +70 °C |
| Package options | 8‑pin DIP, 8‑pin SO |
It accepts an input voltage from +1.5 V up to +5.5 V.
The device can continuously supply up to 120 mA.
Typical efficiency is about 88 % at a 100 mA load.
Commercial parts operate from 0 °C to +70 °C; industrial from –40 °C to +85 °C; military from –55 °C to +125 °C.