PDF document for the TPS51123, a Texas Instruments dual synchronous step-down controller often used to generate the 3.3 V and 5 V standby rails on laptop boards. The name marks it as Working, likely a reference or annotated circuit, and the file is 791 KB. Technicians use such sheets to check pin functions, enable and power-good logic, and typical voltages when diagnosing a board without standby power. Compare the pinout with the actual chip marking before probing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @ShareMan_Electronic_Files. Enginerys does not host this file.
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The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @ShareMan_Electronic_Files | 5 May 2025 | Open file on RM Schematics |
| @lappysan | 21 Oct 2025 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.