Negative rail generator in an 8-pin DIP
The Maxim Integrated MAX766CPA+ is a buck-boost switching regulator that generates a regulated negative output from a positive input rail. It operates in step-up/step-down (buck-boost) topology, meaning it can produce a negative voltage that is either higher or lower in magnitude than the input — useful when you need a -5V or -12V rail from a 3V or 5V supply. The output is adjustable from -1V down to -16V, with a fixed -1V option available; the output configuration is negative. Switching frequency is fixed at 300kHz, and the single output delivers up to 105mA. The part comes in an 8-pin PDIP through-hole package (8-DIP, 0.300" body width), supplied in a tube.
The 105mA output current sets the load ceiling. The 3V to 16V input range covers common battery chemistries and regulated rails.
Where it fits — and where it doesn't
This is a commercial-temperature part (0°C to 70°C), so it belongs in benchtop instruments, lab equipment, office electronics, or indoor power supplies. The through-hole PDIP package suits prototyping, breadboarding, and legacy board repairs.
No pin-compatible second source is cited in the available records, so the Maxim part is the sole qualified option for this footprint and function.