Texas Instruments TLV1117LV28DCYR, positive fixed LDO regulator, 2.8V output, 1A, 75dB PSRR at 120Hz, 100µA quiescent, SOT-223-4, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting type | Surface Mount |
| Voltage - input | 5.5V |
| Voltage dropout | 1.3V @ 800mA |
| Voltage - output (Min (Fixed)) | 2.8V |
| Current - output | 1A |
| Current - quiescent | 100 µA |
| Operating temperature | -40°C ~ 125°C |
| PSRR | 75dB (120Hz) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | TO-261-4, TO-261AA |
| Protection features | Over Current, Over Temperature |
| Number of regulators | 1 |
| Output configuration | Positive |
PSRR is 75dB at 120Hz – that is good ripple rejection from a rectified AC line or a switching pre-regulator. Quiescent current is 100µA. Dropout voltage is a maximum of 1.3V at 800mA load. Protection features include over-current and over-temperature shutdown.
The SOT-223-4 package is a surface-mount part with a large tab for heat sinking. The package is also available in Tape & Reel or Cut Tape.
It is a fixed-output regulator at 2.8V. There is no adjustable version in this exact order code.
The supplier device package is SOT-223-4. The PCB footprint matches the standard SOT-223 land pattern with a large tab for thermal dissipation.
Within the TLV1117LV family, there are fixed-output voltage variants (e.g., 1.8V, 2.5V, 3.3V) in the same SOT-223-4 package. For a 2.8V fixed output, this is the specific order code. A pin-compatible alternative with a different fixed voltage would require a different MPN.
PSRR is 75dB at 120Hz, which provides good rejection of line-frequency ripple from AC-DC supplies or switching pre-regulators.