Maxim MAX1806EUA25+, LDO voltage regulator, positive output, adjustable (fixed 2.5V), 500mA, 5.5V max input, 400µA quiescent, 8-uMAX-EP exposed pad, -40 to 85°C, active.
| Parameter | Value |
|---|---|
| Output type | Adjustable (Fixed) |
| Mounting type | Surface Mount |
| Voltage - input | 5.5V |
| Voltage - output | 4.5V |
| Voltage - output (Min (Fixed)) | 0.8V (2.5V) |
| Current - output | 500mA |
| Current - quiescent | 400 µA |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tube |
| Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) Exposed Pad |
| Control features | Enable, Power Good |
| Protection features | Over Current, Over Temperature, Short Circuit |
| Number of regulators | 1 |
| Output configuration | Positive |
The quiescent current is 400 µA.
It is ROHS3 compliant. For a BOM line that needs a 500 mA LDO with enable and power-good in a small exposed-pad package, this part is safe to qualify into new designs without near-term obsolescence risk.
The difference is the ROHS compliance indicator: the '+' suffix on MAX1806EUA25+ denotes ROHS3 compliant (lead-free). The base MAX1806EUA25 without the '+' may be the non-ROHS variant. Electrically and functionally they are identical — same 500 mA output, same adjustable/fixed 2.5 V option, same package. For new designs the ROHS3 version is the standard choice.
Within the same Maxim (now Analog Devices) family, the MAX1806 series includes fixed-voltage variants (e.g. MAX1806EUA18+ for 1.8 V, MAX1806EUA33+ for 3.3 V) that are pin-compatible and differ only in the factory-set output voltage. No direct second-source from other manufacturers is listed; the part is single-sourced from Maxim/ADI. For dual-sourcing, evaluate the LT3021 or ADP151 families with similar 500 mA LDO capability in comparable packages, but verify pinout and enable/power-good logic compatibility.