PM6150L 103 Power iC

When a Samsung A50, A30, Note 7, or Redmi Note 7 Pro comes into your workshop dead after flash or stuck at boot loop, the power management section is one of the first places you check. The PM6150L-103 sits right at the center of that section. It's a Qualcomm PMIC that takes power from the battery and charging circuit and distributes it as multiple regulated voltage rails to the CPU, RAM, display driver, and other ICs on the board. If this chip develops a short or an internal fault, the phone won't boot at all, or it boots partway and hangs on the logo screen.You'll typically land on this IC after your usual diagnostic sequence: check the battery connector, check for physical damage or liquid marks near the power section, then measure current draw on the bench power supply. A dead phone that pulls abnormal current or shows a short on one of the PM6150L-103's rails, with no other visible fault on the board, points straight to this chip. Reflow first if you suspect a dry joint. If reflow doesn't recover the rail, replacement is the next step.Working with this IC means BGA-level repair, not a bolt-on part swap. You need a hot air rework station set to the correct temperature profile for the board, flux, and a stencil or paste matched to the ball pitch if you're reballing rather than swapping a pre-balled chip. Remove the faulty IC carefully to avoid lifting pads, clean the footprint, align the replacement, and reflow with even heat across the package. Rushing the reflow or overheating adjacent components is the most common way to turn a straightforward IC change into a bigger board repair, so keep your airflow and temperature controlled and check your joints under a microscope before powering the board back on.After the swap, don't just power on and hope. Check current draw against a known-good board figure before you close the phone up. A properly seated PM6150L-103 should draw current in the expected range without spiking or drawing zero. If the board still won't power up cleanly, recheck your soldering before assuming a second fault — a cold joint on this IC will mimic the exact same dead phone symptom you started with.This part suits technicians already comfortable with board-level micro-soldering rather than beginners. If you're running a repair shop or service center that handles Samsung and Redmi board work regularly, keeping the PM6150L-103 in stock saves turnaround time on a fault pattern that shows up often across this device family. Pair it with a reliable hot air station and a stable soldering bench setup, and this becomes a routine repair rather than a guessing game. Always confirm the fault is on the power rail this chip controls before ordering — swapping it on a board with an unrelated hardware fault won't resolve the issue and wastes both the part and your bench time.