Texas Instruments LP2981IM5X-5.0, fixed 5V positive LDO regulator, 100mA output, 0.37V dropout at 100mA, 63dB PSRR at 1kHz, 95µA quiescent current, SOT-23-5 package, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting type | Surface Mount |
| Voltage - input | 16V |
| Voltage dropout | 0.37V @ 100mA |
| Voltage - output (Min (Fixed)) | 5V |
| Current - output | 100mA |
| Current - supply | 1.7 mA |
| Current - quiescent | 95 µA |
| Operating temperature | -40°C ~ 125°C |
| PSRR | 63dB (1kHz) |
| Package | Bulk |
| Case | SC-74A, SOT-753 |
| Control features | Enable |
| Protection features | Over Current, Over Temperature, Short Circuit |
| Number of regulators | 1 |
| Output configuration | Positive |
Includes over-current, over-temperature, and short-circuit protection. Enable pin present. Maximum supply current is 1.7 mA, maximum input voltage is 16V.
It is listed as RoHS non-compliant, so verify your assembly's RoHS exemption requirements before committing the BOM line.
The SOT-23-5 footprint is standard across many fixed-output LDOs from multiple manufacturers, including the LP2981 family siblings. Pin 1 orientation and the Enable/Output/Ground assignment follow the common SOT-23-5 convention, so it will drop onto a layout designed for a typical 5-pin LDO. Always confirm the pinout against your PCB layout before soldering.
No. The LP2981IM5X-5.0 is listed with an Active lifecycle status. There is no announced end-of-life or last-time-buy notice for this part.
The LP2981IM5X-5.0 and LP2981IM5X-3.3 are the same regulator family in the same SOT-23-5 package, differing only in fixed output voltage — 5.0V versus 3.3V. They are pin-compatible, so swapping the output voltage is a matter of changing the BOM line, not the PCB layout.