Buck-boost converter with a 1.5 A switch — what it means for your rail
The ADP1173AN is a micropower DC-DC converter from Analog Devices that handles step-up and step-down regulation in a single inductor buck-boost topology. It delivers a 1.5 A switch current at a 400 kHz switching frequency, with an adjustable output from 1.245 V up to 18.9 V. The input range spans 2 V to 30 V, making it suitable for battery-powered equipment, multi-rail industrial supplies, and point-of-load regulation where the input can swing above or below the output. The through-hole package suits prototyping, low-volume production, or designs where vibration resistance and easy rework matter.
1.5 A switch current — sizing the inductor and load budget
The 1.5 A switch current is the peak current the internal power switch can handle. In a buck-boost converter, the inductor peak current is typically higher than the output current.
Through-hole 8-DIP — board fit and assembly
The through-hole package mates with standard DIP sockets or solders directly into plated-through holes on a prototype board. No fine-pitch soldering or reflow profile needed — hand assembly and rework are straightforward.