Texas Instruments LP2985AIM5X-5.0/NOPB, fixed 5V output LDO, 150mA, 0.58V dropout max at full load, 45dB PSRR at 1kHz, SOT-23-5, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting type | Surface Mount |
| Voltage - input | 16V |
| Voltage dropout | 0.58V @ 150mA |
| Voltage - output (Min (Fixed)) | 5V |
| Current - output | 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 |
Maximum dropout voltage is 0.58 V at the full 150 mA load. The 45 dB PSRR at 1 kHz provides ripple rejection for sensitive loads.
Built-in protection covers over-current, over-temperature, and short-circuit events. An enable pin lets the system shut down the regulator, dropping quiescent current to near zero when the 5V rail is not needed. Quiescent current is 95 µA typical, with a maximum supply current of 2.5 mA.
The LP2985AIM5X-5.0/NOPB is the tape-and-reel (TR) and cut-tape (CT) variant of the LP2985AIM5-5.0. The die and electrical specifications are identical; the difference is only in the shipping packaging.
Both are fixed 5V LDOs, but the LP2985 is rated for 150 mA output versus the LM2937's higher current rating. Check your load current — if it stays under 150 mA and the input voltage is above 5.58 V, the LP2985 is a drop-in replacement in a smaller SOT-23-5 footprint. Verify the enable pin logic if your design uses it.