Electronics Weekly
The BUxxJA3DG-C series can accept input voltages up to 6V and outputs 1.2, 1.8, 2.5, 3.0 or 3.3V depending on version, with drop-out voltage below 370mV (except 500mV for 1.2V version, table below).
Rohm pointed out the possibility of regulating a 1.2V sensor from a 1.8V rail, and of the 3.3V version added: “output voltage noise is reduced to just 55μVrms [see graph] which is about 40% lower than similar 3.3V low-noise LDO regulators.”
OV on the enable input cuts current to 10μA max (2μA at or below +85°C). When disabled, ~40Ω is internally connected across the output pins to discharge output capacitance.
Common features are: ±2% output voltage accuracy, 37μA typical quiescent, 100nF min Cin, 0.47μF min to 47μF max Cout, -40 to +125°C operation, 1.25mm high SSOP5 packaging and AEC-Q100 Grade 1 qualification.
| Part | In | Out | Vin-Vout max@0.3A |
|---|---|---|---|
| BU12JA3DG-C | 1.7 to 6V | 1.2V | 500mV |
| BU15JA3DG-C | 1.9 to 6 | 1.5 | 365 |
| BU18JA3DG-C | 2.2 to 6 | 1.8 | 330 |
| BU25JA3DG-C | 2.8 to 6 | 2.5 | 240 |
| BU30JA3DG-C | 3.3 to 6 | 3.0 | 220 |
| BU33JA3DG-C | 3.6 to 6 | 3.3 | 200 |
