Texas Instruments LP2985-28DBVR, 2.8V fixed-output LDO, 150mA, 0.58V dropout at full load, 95µA quiescent current, 45dB PSRR at 1kHz, SOT-23-5, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Voltage - input | 16V |
| Voltage dropout | 0.58V @ 150mA |
| Voltage - output (Min (Fixed)) | 2.8V |
| Output current | 150mA |
| Current - supply | 2.5 mA |
| Current - quiescent | 95 µA |
| Operating temperature | -40°C ~ 125°C |
| PSRR | 45dB (1kHz) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | SC-74A, SOT-753 |
| Control features | Enable |
| Protection features | Over Current, Over Temperature, Short Circuit |
| Number of regulators | 1 |
| Output configuration | Positive |
The SOT-23-5 footprint is a standard low-profile surface-mount package.
Maximum dropout is 0.58 V at the full 150 mA load. Quiescent current sits at 95 µA typical. The 16 V maximum input voltage lets this LDO survive load-dump transients. Over-current, over-temperature, and short-circuit protection are built in.
It is ROHS3 compliant.
PSRR is 45 dB at 1 kHz. This is the figure for the fixed-output version and is adequate for filtering switching-regulator ripple on a 2.8 V analog supply rail.
Within the LP2985 family, the fixed-output voltage variants (e.g., LP2985-33DBVR for 3.3 V) share the same SOT-23-5 pinout and enable logic. For a different output voltage at the same 150 mA rating, the corresponding LP2985-xxDBVR is a drop-in replacement.