Fixed 12 V rail from a wide input — what this part does
The ADP1173AR-12 is a micropower DC-DC converter from Analog Devices that handles step-up, step-down, and buck-boost regulation in a single 8-SOIC package. It delivers a fixed 12 V output from any input between 2 V and 30 V, making it a candidate for battery-powered equipment, industrial control boards, or anywhere a regulated 12 V rail is needed from an unregulated source. The internal switch is rated for 1.5 A, and the 400 kHz switching frequency keeps the external inductor and capacitor small enough for tight layouts.
Input range and output — the numbers that decide fit
The input voltage range spans 2 V to 30 V. The output is fixed at 12 V. The 1.5 A switch current is the peak the internal switch can handle.
Switching frequency and package
The 400 kHz switching frequency is a practical middle ground. The 8-SOIC package (3.90 mm width) is a standard surface-mount footprint. No synchronous rectifier here.
Temperature grade and environment
Rated for 0°C to 70°C operating temperature, this is a commercial-grade part. It belongs in office equipment, benchtop instruments, or indoor industrial panels — not under the hood or in a freezer. If the board lives in a conditioned space, the temp range is fine; for outdoor or engine-bay use, look at the industrial-temperature siblings in the ADP1111 family.
Lifecycle and sourcing reality
Listed as Active in production — no LTB notice, no NRND flag. The part is RoHS non-compliant. We source this through independent distribution.