PM8150L 103 Power iC

When a Snapdragon 855 board comes in dead after flash, or refuses to power on despite a good battery and charging path, the fault often traces back to the power IC cluster rather than the CPU itself. The PM8150L 103 sits in that cluster. Qualcomm designed it as a companion PMIC that pairs with the primary PM8150 chip on SM8150-based motherboards, splitting the voltage regulation workload between the two ICs so the platform gets clean, sequenced power delivery to the modem, RF front end, and various board rails during boot-up.You find this pairing on Snapdragon 855 devices, including the Snapdragon variant of the Samsung Galaxy S10 series and Note 10 series, along with other phones and tablets built on the SM8150 chipset. During the power-on sequence, PM8150L brings up several voltage rails before PM8150 takes over the rest, and if this chip fails or drops a rail, you typically see a board that won't power on at all, one that hangs on logo, or one that boots partially and then cuts out.For a GSM technician, this IC becomes relevant during hardware fault diagnosis after software attempts don't fix the issue. If a board shows dead after flash, and you've already ruled out a corrupted EFS or bad firmware through box software, the next step is checking the power rails with a multimeter or power supply with current display. A short on one of the PM8150L-controlled rails, or a dead IC that isn't switching at all, points straight to reballing or replacing this chip. Boot loop cases where the phone powers up, shows the logo, and restarts in a loop also often trace back to a rail dropping mid-sequence, which puts PM8150L on your suspect list alongside the main PMIC and the CPU itself.This chip ships in BGA package form, meaning it needs proper reballing equipment, a decent hot air station, and a steady hand rather than a simple hand-soldering job. Get the preheat temperature right, use flux generously, and align the ball grid carefully before reflow, since a misaligned placement on a power IC creates a short that can damage other components on the board when you power it back on. If you're not confident with fine-pitch BGA rework, running the board on a microscope during placement saves you from a comeback repair.Stock this IC if your workshop regularly handles Snapdragon 855 boards for Samsung Galaxy S10, Note 10, and other SM8150-based devices. It's a common failure point after liquid damage, a bad previous repair attempt, or a board that's been mishandled during a screen or battery job. Keep a couple in stock alongside the primary PM8150 chip so you're not waiting on parts mid-repair when a customer's board is sitting on your bench.Every unit from KB GSM Store is tested stock, sourced for board-level repair work, and priced for repair shop volume ordering. Pair it with your ISP tools and hot air station for a complete power rail repair setup, and check our other Power IC listings if you need the matching PM8150 or PM8150B for the same board family.