Active lifecycle — what it means for the BOM line
The MAX1846EUB: Note the RoHS non-compliant marking — this part uses lead-bearing solder terminations, so it cannot be placed on a RoHS-required BOM without an exemption or a waiver. Confirm your assembly house's policy on tin-lead finishes before committing the line.
Function and fit — inverting PWM controller
The MAX1846EUB is an inverting PWM controller — it generates a negative output voltage from a positive input rail, typically used to bias op-amp supplies, LCD contrast drivers, or GaAs FET bias circuits where a clean negative rail is needed without a separate transformer. Because it is a controller rather than a complete converter module, the external inductor, diode, and capacitor selection determine the actual output voltage and current capability. The datasheet's application circuits show the component values for common negative-rail voltages.
Packaging and storage
Supplied in Bulk format — loose tubes or trays, not tape-and-reel. For a pick-and-place line, plan a tube feeder or a manual loading step; the Bulk package does not feed from a standard reel pocket. Store the reels dry — the Bulk package may not include a moisture-barrier bag. If the parts arrive without a sealed bag, bake them per the MSL rating on the label before reflow.