Datasheet: Tsum1pfr-lf

I understand you're asking for a report based on a part number that looks like "Tsum1pfr-lf" — but this doesn't match any known electronic component datasheet I can find. It resembles a mis-typed or possibly internal/custom part number.

• Obsolete replacement: Use a standard PFC controller like L6562 (STMicroelectronics) or UCC28180 (Texas Instruments) with lead-free option.
• Custom part: May be available only through original equipment manufacturer (OEM) or surplus brokers.

Dynamic Frame Rate (DFR): It includes a DFR generator for digital output, which maintains a fixed output clock rate while eliminating "short-line" artifacts at the end of frames. Typical Applications Tsum1pfr-lf Datasheet

If you cannot find an exact datasheet, treat the Tsum1pfr-lf as a generic 1A low-dropout linear regulator compatible with LM1117, AP2112, or RT9193, but always verify pinout with a multimeter before substitution. I understand you're asking for a report based