PM8998 002 Power IC

Every Snapdragon 835 board needs a working PMIC before anything else on the board can function, and the PM8998 002 is that chip on Samsung's Galaxy S8 series. When a customer brings in a dead Galaxy S8 or S8+ with no charging light, no logo, and no response to a battery swap, your first suspect after the charging IC is this power controller.The PM8998 002 talks to the Snapdragon 835 (APQ8098) application processor over the SPMI bus, the same interface Qualcomm uses across its PMIC lineup. It handles three jobs your repair depends on: voltage regulation for the CPU, memory, and RF sections, power sequencing during boot so every subsystem turns on in the right order, and coordination with the charging path so the battery gets managed power instead of raw current. When any of these functions fail, you see symptoms that mimic other faults — a phone that won't power on, a board that draws current but shows no display, or a device stuck at the logo because the CPU never gets a clean power rail.Board-level technicians reach for this IC replacement when standard troubleshooting rules out the battery, charging port, and display assembly, and voltage checks on the PMIC rails come back flat or unstable. Reballing the PM8998 002 with a hot air station and the correct stencil, or swapping it outright on a donor board, brings the power rails back and lets the Snapdragon 835 complete its boot sequence normally.This chip is not limited to Samsung boards. Because it's Qualcomm's standard PMIC for the Snapdragon 835 generation, you'll find the same PM8998 002 on other 835-based phones — Xiaomi Mi 6, Mi Mix 2, OnePlus 5 and 5T, Google Pixel 2 XL, and Motorola Z2 Force. If you run a multi-brand repair shop, keeping this IC in stock covers a wider slice of your Snapdragon 835 dead-phone jobs than a single-model part would.Working with this IC demands the same discipline as any BGA-level rework: preheat the board evenly, use flux rated for lead-free work, control your hot air temperature to avoid lifting neighboring pads, and reflow with a stencil matched to the PM8998 002 ball pattern. Skipping proper preheat is the most common reason technicians get a "dead after flash" result even after fitting a good IC — the board never reaches thermal equilibrium and the new joints don't seat.Keep this IC in your bench inventory alongside your ISP pinout tools, UFS programmers, and reballing kits. When a Galaxy S8 comes in dead and the charging IC tests fine, the PM8998 002 is next in your diagnostic path, and having it on hand turns a multi-day repair into a same-day job. Pair it with a decent microscope and PCB holder for the cleanest reflow results, especially on boards that have already seen prior rework.