The Microchip SR086SG-G is an inductorless offline switching IC designed for non-isolated AC-DC conversion without the need for a magnetic component. Its inductorless topology means the power stage uses a capacitive charge-pump or similar switched-cap technique, which shrinks the BOM and avoids the height and cost of a wound inductor. The part is aimed at low-power offline supplies — think appliance control boards, smart switches, or auxiliary housekeeping rails — where a compact, low-component-count solution is preferred over a traditional flyback or buck converter. That temperature grade makes it suitable for industrial environments — outdoor telecom cabinets, motor drives, or any enclosure that sees thermal cycling.
The ROHS3 compliance covers current environmental regulations, no exemption expiry to track.
EN pin and control — what the enable feature buys you
The control features include an EN (enable) pin, which lets an external signal gate the switcher on and off. That is useful for sequenced power-up, standby power reduction, or fault-triggered shutdown. Because the part has no internal switch, the enable pin controls the controller logic, not a power device — so the EN threshold is a logic-level signal, not a high-voltage rail.