Fixed 5V buck-boost regulator in an 8-pin DIP
The ADP1173AN-5 is a micropower DC-DC converter that handles both step-up and step-down conversion using a buck-boost topology. It delivers a fixed 5V output from a 2V to 30V input range.
1.5A switch current — what it means for your load budget
The 1.5A switch current is the peak current the internal power switch can handle. In a buck-boost converter, the switch current is higher than the output current, especially in boost mode.
Sourcing and lifecycle — still in active production
The ADP1173AN-5 carries an Active lifecycle status, so there is no last-time-buy window to track and no imminent obsolescence risk. It is RoHS non-compliant (lead-bearing), which matters for EU RoHS-exempt categories like industrial control, medical, or aerospace where leaded solder is still permitted. For new designs that require RoHS compliance, the ADP1111ANZ-5 is a functional alternative — same 5V fixed output, same through-hole DIP footprint, but with a 72 kHz switching frequency (slower, larger inductor) and a 400 mA switch current (lower output capability). The ADP1111ANZ-5 is also active and RoHS-compliant, so it serves as a second-source option for dual-sourcing or compliance-driven BOMs.
