Schedule Your Roofing Appointment Online!
Note: Always verify pin 1 marking (dot or notch orientation) from the actual component. Exceeding any value in this table may cause permanent damage to the Tsum1pfr-lf.
A: Not necessarily. Measure input and output voltage difference. If >1.5V and load is 500mA, heat is normal. Add a heatsink or reduce VIN. If temperature exceeds 125°C at the case, consider a switching regulator. 9. Conclusion The Tsum1pfr-lf datasheet , while not a mass-market published document, describes a component that fits the profile of a modern, lead-free, 1A low-dropout linear regulator. Its key strengths are low quiescent current, tight output accuracy, and integrated protection. When working with this part, prioritize thermal management, verify the actual pinout via continuity tests, and cross-reference with LDOs from Texas Instruments, Diodes Inc., or Richtek if a genuine datasheet remains elusive. Tsum1pfr-lf Datasheet
Please note: Based on standard electronic component nomenclature, "Tsum1pfr-lf" does not match a widely published, generic component from major vendors (like Texas Instruments, ON Semi, or Diodes Inc.) as of my last knowledge update. It strongly appears to be a proprietary, custom, or internal part number—potentially from a specific OEM (e.g., a TV power supply, laptop board, or industrial controller). The "LF" suffix typically denotes "Lead-Free" or "Halogen-Free." Note: Always verify pin 1 marking (dot or
A: Only if: (1) Pinout matches, (2) AMS1117’s dropout voltage (~1.1V) is acceptable. The Tsum1pfr-lf likely has LDO dropout (~0.2V). Replace with a modern LDO like AP7365 or NCP1117 for similar performance. Measure input and output voltage difference
Formula: Where VREF is typically 0.8V or 1.25V (check your specific datasheet).