1A 1.8V Fixed LDO — thermal and dropout headroom
The ROHM BD18IC0MEFJ-LBH2 is a single-output positive LDO delivering 1A at a fixed 1.8V, with a maximum dropout of 0.9V at full load. The 1A output at 0.9V dropout dissipates 0.9W worst-case; the pad keeps the junction below the 105°C ceiling when the board has a reasonable thermal land pattern.
Active lifecycle — no LTB pressure, ROHS3 compliant
This part carries an Active product status from ROHM. No last-time-buy window has been announced, and the ROHS3 compliance covers EU material restrictions through the current revision.
Protection and control — Enable, Soft Start, OCP, OTP
The Enable pin lets a system controller sequence the 1.8V rail on and off. The Soft Start limits inrush current into the output capacitor, which avoids a voltage dip on the upstream rail during power-up. Over-current and over-temperature protection are built in — the LDO folds back or shuts down before the die exceeds the safe operating area, which simplifies the protection circuitry on the board.