Texas Instruments TPS7A1125PDRVT, linear voltage regulator, fixed 2.5V output, 500mA, 0.14V dropout max, 2.6µA quiescent current, PSRR 64dB~35dB (1kHz~1.5MHz), -40°C~125°C junction temperature, 6-WSON (2x2) package, surface mount, active.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Voltage - input | 3.3V |
| Voltage dropout | 0.14V @ 500mA |
| Voltage - output (Min (Fixed)) | 2.5V |
| Output current | 500mA |
| Current - supply | 11 µA |
| Current - quiescent | 2.6 µA |
| Operating temperature | -40°C ~ 125°C (TJ) |
| PSRR | 64dB ~ 35dB (1kHz ~ 1.5MHz) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 6-WDFN Exposed Pad |
| Control features | Enable |
| Protection features | Over Current, Over Temperature, Under Voltage Lockout (UVLO) |
| Number of regulators | 1 |
| Output configuration | Positive |
PSRR is 64 dB at 1 kHz and 35 dB at 1.5 MHz.
Housed in a 6-WSON with exposed pad (2x2 mm body), the part is surface-mount only. The enable pin lets you sequence the rail on/off; leave it floating if unused (internal pull-down keeps the output off).
Yes, the maximum input voltage is 3.3V, so a 3.3V rail is within spec. The dropout at 500mA is only 0.14V, so regulation holds down to about 2.64V input.