XLSEMI

XLSEMI (Shanghai Xinlong Semiconductor) builds cost-focused DC-DC conversion ICs for industrial, consumer and automotive accessory designs. Its catalog profiles here cover the XL4015 5 A adjustable buck, the XL6009 boost converter, and the XL1509 150 kHz buck family in two separately verified SOIC-8 variants: the fixed 5 V XL1509-5.0E1 and the adjustable XL1509-ADJE1, whose output parameters must never be carried from one code to the other. Ordering codes specify the output variant and package, so confirm both against the rail the board needs before ordering.

Sourcing notes for XLSEMI parts. Always quote the complete manufacturer ordering code — package, temperature grade, speed or accuracy grade, and packing (reel, tube or tray) all change availability and price, and suffixes are where most mismatches happen. Check the lifecycle status on the manufacturer site before committing to a multi-year build; parts flagged not-recommended or obsolete need a last-time-buy plan or a verified alternate lined up early. With every offer, request traceability documents — date code, lot code and original packing — and confirm the inspection steps your supplier applies to high-risk lots.