Maxim MAX856ESA+, Step-Up Boost Regulator, 1 Output, 500mA Switch, 500kHz, Programmable 3.3V/5V, 8-SOIC, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Output type | Programmable |
| Mounting | Surface Mount |
| Voltage - input | 0.8V |
| Voltage - output (Min (Fixed)) | 3.3V, 5V |
| Output current | 500mA (Switch) |
| Frequency - switching | 500kHz |
| I/O channels | 1 |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tube |
| Function | Step-Up |
| Topology | Boost |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Output configuration | Positive |
| Synchronous rectifier | No |
The 500 mA rating is the peak switch current, not the continuous output.
The 8-SOIC package is a standard footprint, reflow-friendly, and widely second-sourced for assembly.
That means you can qualify it into a new design without worrying about a sudden obsolescence-driven respin. No single-supply dependency here.
It is Active and ROHS3 compliant, with no end-of-life notice. You can design it in without near-term obsolescence risk.
Yes. The output is programmable — set the logic pin low for 3.3V, high for 5V. No external divider needed.