ADM660/ADM8660 are low power CMOS switched-capacitor voltage converters that can invert or double input supply voltage.
The ADM660/ADM8660 are CMOS switched‑capacitor voltage converters that can invert an input supply voltage (ADM660/ADM8660) or double it (ADM660 only). They operate from 1.5 V to 7 V input and can deliver up to 100 mA output current, making them suitable for handheld instruments, portable computers, and remote data‑acquisition systems.
Key features include selectable charge‑pump frequency (25 kHz or 120 kHz), low‑power shutdown (ADM8660), pin‑compatible upgrades for MAX660, MAX665, ICL7660, and availability in 8‑lead DIP, narrow‑body SOIC, and 16‑lead TSSOP packages. The datasheet lists detailed electrical specifications, thermal ratings, pin functions, and recommended external capacitor values for optimal performance.
| Input Voltage Range | 1.5 V – 7 V |
|---|---|
| Maximum Output Current | 100 mA |
| Quiescent Current (No Load) | 0.6 mA – 1 mA |
| Charge‑Pump Frequency Options | 25 kHz or 120 kHz |
| Shutdown Supply Current (ADM8660) | 0.3 µA – 5 mA |
| Power Efficiency (25 kHz, RL=1 kΩ) | 90 % – 94 % |
Both devices can deliver up to 100 mA of continuous output current.
A high level on the SD pin disables the charge pump, reducing quiescent current to about 0.3 µA and turning the output voltage to 0 V.
They are offered in 8‑lead PDIP, narrow‑body SOIC, and 16‑lead TSSOP packages.