What this regulator does and where it fits
The Maxim Integrated MAX882CPA+ is a single-output positive adjustable linear regulator delivering up to 200 mA. Output can be set from 1.25 V up to 11 V via external resistors, or fixed at 3.3 V using the internal divider. The 15 µA quiescent current and 25 µA maximum supply current make it a fit for battery-powered instruments, portable equipment, and always-on bias rails where every microamp matters. The 0.64 V maximum dropout at full load means the input needs to stay at least that much above the output voltage to maintain regulation — a tight headroom requirement that matters when the input rail sags under battery discharge.
Protection and control features
On-chip protection covers over-current, over-temperature, and reverse polarity — the three failure modes that kill linear regulators in the field. An enable pin lets the system shut down the regulator to near-zero draw, and a low-battery detection output flags when the input falls below a programmed threshold. These are practical for battery-backed real-time clocks or microcontroller keep-alive rails where the system needs to know the battery is running low before the regulator drops out.
Package and temperature grade
Housed in an 8-pin DIP with 0.300" body width and 7.62 mm lead spacing, the MAX882CPA+ is a through-hole part. That means it goes into sockets or solders into plated through-holes — not a reflow-friendly SMT package. The 0°C to 70°C operating range limits it to commercial indoor environments: office equipment, benchtop instruments, consumer electronics. Not rated for the engine bay or an outdoor enclosure in freezing weather.