Texas Instruments datasheet for the TPS51116, a 2.92 MB PDF. This controller is a complete DDR memory power solution, combining a synchronous buck controller for VDDQ with a VTT sink/source LDO and a buffered reference, found on many laptop boards for the memory rails. The document covers pin functions, typical application circuit, enable sequencing and protection. Technicians rely on it to check the S3/S5 control pins, feedback and output voltages when memory power is missing, and to identify test points around the chip.
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