1.5A switch, 1V–30V input, 5V fixed output — one DIP covers both buck and boost
The LT1073CN8-5#PBF is a fixed 5V output switching regulator that operates in either buck or boost topology from a 1V minimum to 30V maximum input, delivering up to 1.5A through the internal switch at a 19kHz switching frequency. It is a single-output, positive-configuration device with no synchronous rectifier, housed in an 8-pin through-hole DIP (0.300" width, 7.62mm pitch), supplied in a tube.
Dual-topology flexibility in a legacy through-hole footprint
The part's ability to configure as either a step-down (buck) or step-up (boost) regulator from a single 8-DIP package means a single BOM line can serve multiple rail voltages in designs where board space is not the constraint — the trade-off is the 19kHz switching frequency, which places the fundamental switching noise in the audible range and limits the minimum output ripple filter size compared to a modern 500kHz+ converter. The 1V minimum input allows operation from a nearly depleted single-cell battery or a low-voltage energy-harvesting source, while the 30V maximum input handles unregulated rails from rectified AC or multi-cell battery stacks without an external pre-regulator.