The document describes the ICL7662/Si7661 as a monolithic charge pump voltage inverter that converts positive voltages (+4.5V to +20V) to corresponding negative voltages (-4.5V to -20V). It features an on-chip oscillator, control circuitry, and four power MOS switches, requiring only two external capacitors for operation.
The datasheet provides absolute maximum ratings, electrical characteristics tables for both the ICL7662 and Si7661 variants across various temperature ranges, and typical operating characteristic graphs. It also includes detailed descriptions of efficiency considerations, general precautions for usage, and application notes on changing oscillator frequency.
| Supply Voltage Range (Low) | +4.5V to +20V |
|---|---|
| Output Voltage Range | -4.5V to -20V |
| Typical Open Circuit Conversion Efficiency | 99.7% |
| External Components Required | 2 Capacitors |
| Oscillator Frequency (Typical) | 10 kHz |
The typical open circuit conversion efficiency is 99.7%.
Only two low cost capacitors are required as the only external components.