PM8916 Power Control IC

Every Snapdragon 410 phone that comes in dead on your bench depends on one small chip to wake it up at all — the PM8916. Qualcomm built this PMIC as the single mixed-signal IC that runs wireless handset power management, general housekeeping, and user-interface support for the MSM8916 and APQ8016E platforms. Before the application processor boots, before the display lights up, before the modem searches for network, the PM8916 sequences the rails that make all of it possible.On a repair bench, you meet this chip most often on dead phone cases where the board shows no current draw at all, or where current draw looks abnormal on your power supply and the phone won't proceed past the logo. The PM8916 integrates the buck-boost regulator, the battery charger circuit, and up to 30 adjustable LDOs into one BGA package. That level of integration is exactly why a fault here creates such a wide spread of symptoms — a single damaged rail can knock out RF, display, or even the RTC clock, depending on which output it feeds.Battery charging faults are a common reason this IC gets swapped. The chip's integrated charger manages input from multiple power sources and controls charge current and voltage, so when a phone shows charging issue with a good battery, good charging IC, and confirmed track continuity, the PM8916 is next on the checklist. Boot loop after a liquid damage repair is another frequent case — corrosion under the BGA balls breaks individual rail connections without killing the chip's function entirely, which is why reballing and reflow sometimes resolve a boot loop that jumper wires can't.The PM8916 also runs the real-time clock circuit and alarm functions, the audio output stage across ear speaker, headphone, and the Class-D speaker driver, and multi-button headset detection. A phone with a dead RTC battery symptom, distorted audio, or unresponsive headset controls on Snapdragon 410 hardware often traces back to a specific rail from this chip rather than the audio codec itself — worth checking before you condemn a different component.For programming and SPMI-based diagnostics, the PM8916 communicates over a two-line SPMI interface with interrupt managers, which is how flash boxes and diagnostic tools read the chip's power status during a dead-board recovery attempt. If your box shows power detected but the board still won't respond to a flash attempt, confirming SPMI communication with the PM8916 narrows down whether the fault sits at the PMIC or further down the boot chain.Because this is a genuine Qualcomm-sourced BGA component, board-level replacement calls for a hot air station with accurate temperature control, a stencil matched to the ball pitch, and a microscope for post-reflow inspection. Skipping proper reballing on this chip is one of the fastest ways to turn a single-rail fault into a fully dead board — the pad count and pitch don't forgive careless rework.Stock this IC if your shop handles volume on Snapdragon 410 and APQ8016E devices — budget Android phones, entry tablets, and IoT boards built on this chipset all share the same PMIC, so a working stock of PM8916 units keeps dead phone and charging issue turnaround times short instead of waiting on a supplier.