PM8110 Power IC

Every dead board that lands on your bench forces the same question: is the fault sitting in the charger path, the battery connector, or the power IC itself? On the boards it ships with, the PM8110 sits right at the center of that question. Qualcomm designed this chip as a power management IC, and its entire job is converting raw battery and charger input into the clean, regulated voltage rails that every other component on the board depends on — the processor, the RF section, the display driver, and the charging circuit all pull power through this stage first.When the PM8110 develops a fault, the symptoms rarely point straight at it. You get a dead phone with zero response, a board that draws current but never boots, a charging issue where the port works but the battery never fills, or a hang on logo that looks like a software fault until you trace the rails and find one missing. Before you reach for this IC, rule out the obvious first — check the charging port, inspect for corrosion, confirm the battery connector, and measure the main rails with your bench meter. Software marna will not fix a dead PMIC. If the board pulls short current or sits at zero on a rail this chip is meant to supply, IC change karna is the only real fix.The PM8110 ships in a small BGA footprint, which means this is not a job for a soldering iron alone. You need a hot air rework station set to the right temperature and airflow, a stencil sized for this package, and a steady hand for alignment. Pull the old chip, clean the pads completely, check the board for lifted pads or damaged traces before you reball, then reflow the new IC and test power-up before you close the board back up. Rushing the pad-cleaning step is where most reballing jobs go wrong — leftover flux or misaligned balls on a power IC will give you a board that looks fixed and then drops dead again in a week.This chip carries a wide operating range, rated from -40°C to 105°C, which gives it enough thermal headroom to handle repeated rework cycles and normal bench conditions without degrading — useful when you're running multiple boards through the same session.Where you'll actually use this: boards for the Huawei Y625-U32, Huawei Y530-U00, Alcatel 7040N, HTC Desire 516, and Huawei S7-721G tablet all carry this part in their power stage, based on verified schematic and BOM references. If a board outside this list lists PM8110 in its schematic, the same part applies — always cross-check against the board's actual BOM or schematic before ordering, since board revisions can swap power ICs even within the same model line.For a repair shop or service center running Qualcomm-based boards regularly, keeping a few of these in stock saves a diagnostic trip turning into a lost job. Pair it with a decent hot air station, a matching stencil, and a multimeter for rail testing, and PMIC-level dead phone jobs stop being a guessing game.