LMR14030SDDAR

LMR14030SDDAR is the tape-and-reel HSOIC-8 (DDA, PowerPAD) ordering code for the Texas Instruments LMR14030 step-down converter, listed by TI as Active. It accepts a 4 V to 40 V input and regulates against a feedback window of 0.744 V to 0.756 V at a 25 °C junction temperature (0.735 V to 0.765 V over the full -40 °C to +125 °C junction range), with switch resistance of 90 mΩ typical (180 mΩ maximum), a switch current-limit window of 4.4 A to 6.6 A (5.5 A typical, at a 12 V input and 25 °C under the datasheet test conditions - a switch limit, not a rated output current) and 500 kHz typical switching frequency (400 kHz to 600 kHz with a 49.9 kΩ RT resistor), drawing 40 µA typical quiescent current. The selection point is the 40 V input ceiling in an 8-pin power package: 24 V industrial rails and building-automation supplies with hot-plug and load transient stress fit without the external switches a controller IC would need. Selection advice: the DDA package needs its PowerPAD soldered to a copper pour for sustained full-load operation - treat the pad as a thermal requirement, not an option; and where the input can never pass 36 V, smaller members of the same family may cost less, but the 40 V rating is what covers 24 V rails with margin. Parameters verified against the TI datasheet SNVSA81B Rev. B (ordering appendix and electrical tables).