The ICL7660S is an upgraded version of the ICL7660, with an extended operating voltage range of up to 12V and lower supply current. No external diode is required for the ICL7660S. In addition, a Frequency Boost pin has been incorporated to enable the user to achieve lower output impedance despite using smaller capacitors. Critical parameters are guaranteed over the entire commercial, industrial and military temperature ranges. The ICL7660S performs supply voltage conversion from positive to negative for an input range of 1.5V to 12V, resulting in complementary output voltages of -1.5V to -12V. Only 2 non-critical external capacitors are needed for the charge pump and charge reservoir functions. The ICL7660S can be connected to function as a voltage doubler and will generate up to 22.8V with a 12V input. It can also be used as a voltage multiplier or voltage divider.
The ICL7660S Super Voltage Converter is a CMOS charge‑pump IC that converts a positive input voltage (1.5 V‑12 V) to a complementary negative output (‑1.5 V‑‑12 V). It requires only two non‑critical external capacitors and no external diode, offering up to 22.8 V output when used as a voltage doubler. The device integrates a series regulator, RC oscillator, level translator and four MOS power switches.
Key features include a wide operating voltage range, low supply current across temperature ranges, a boost pin for higher oscillator frequency, and RoHS‑compliant Pb‑free packaging. Typical applications are negative‑voltage generation for data‑acquisition systems, RS‑232 power supplies, and voltage‑doubling circuits.
| Supply Voltage Range | 1.5 V – 12 V |
|---|---|
| Oscillator Frequency (free running) | ≈10 kHz |
| Operating Temperature Range | -40 °C – +85 °C |
The device can operate with an input as low as 1.5 V.
No external diode is needed for the ICL7660S.
Only two non‑critical external capacitors are needed for the charge‑pump and reservoir functions.