Analog Devices MAX8511EXK31+T, linear voltage regulator, fixed 3.1V output, 120mA, low dropout 0.12V typ, PSRR 72dB ~ 46dB (1kHz ~ 100kHz), SC-70-5 package, -40°C to 85°C, active, ROHS3 compliant.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Voltage - input | 6V |
| Voltage dropout | 0.12V @ 120mA (Typ) |
| Voltage - output (Min (Fixed)) | 3.1V |
| Output current | 120mA |
| Current - quiescent | 90 µA |
| Operating temperature | -40°C ~ 85°C (TA) |
| PSRR | 72dB ~ 46dB (1kHz ~ 100kHz) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 5-TSSOP, SC-70-5, SOT-353 |
| Control features | Shutdown |
| Protection features | Over Current, Over Temperature |
| Number of regulators | 1 |
| Output configuration | Positive |
Built-in over-current and over-temperature protection cover the usual fault cases — a shorted load or a stalled fan won't smoke the part. The shutdown control pin lets you drop the quiescent current from 90µA to near zero when the rail is not needed, which is handy for battery-powered gear that sleeps between readings.
The maximum output current is 120mA. It is a low-current LDO sized for sensor bias, small MCU rails, or reference supplies — not for powering a motor or a radio transmitter.
It comes in a SC-70-5 package (also known as 5-TSSOP or SOT-353). That is a 5-lead surface-mount package about 2mm x 2.1mm — hand-solderable with a fine iron tip and some flux.
Within the MAX8511 family, other fixed-voltage variants (e.g. 1.8V, 2.5V, 3.3V) share the same SC-70-5 pinout and 120mA rating. For a direct 3.1V replacement, the same order code is the intended part; no second-source alternate is listed in the available records.