PM8029 Power IC

Power supervisor ICs sit at the core of a phone's board — they don't just supply voltage, they control the sequence in which every other IC on the board wakes up. The PM8029 is Qualcomm's power supervisor PMIC, and on the phones it was designed for, nothing else on the board powers on until this chip does its job correctly. That's why a faulty PM8029 almost always presents as a completely dead phone rather than a partial fault.You'll recognize this IC on boards for the Samsung Galaxy S Duos S7562, GT-S7500, GT-S6312, GT-S5570, GT-S6500, GT-I8262, GT-I8262D, GT-I8552, and I879, as well as the HTC A310e and HTC 608T (T328W), Motorola XT557 and XT615, Huawei U8825D and C8812, and the Nokia XL. Across this range, the PM8029 handles the same core job: regulating and sequencing the rail voltages that feed the baseband, RF, and application sections of the board.On your repair bench, this IC comes up in a specific set of complaints. A dead phone that shows zero current draw on the power supply is the classic symptom — no LED, no logo, nothing. A board that was working before a flash and goes dead after flash also points here, since a disrupted power sequence during flashing can damage or destabilize this IC. You'll also see it linked to hang on logo faults where the phone powers partway up and stalls, and to intermittent charging issue complaints where the power rails aren't stable enough to sustain a charge cycle.Diagnosing before you commit to IC change karna matters here. Start with a current draw test on your power supply box — a short or dead short reading usually rules the PM8029 in as a suspect, but always check for physical damage, corrosion, or a lifted pad first. If the board was liquid damaged, clean and inspect the area under the IC before assuming the chip itself has failed; sometimes it's a bridged pad or a hairline crack in the board rather than the IC. Once you've isolated the fault to this component, reballing is the standard fix — jumper lagana as a temporary workaround isn't practical on a power supervisor IC because of the pin count and the precision the power sequencing needs.For the reballing process itself, this WLNSP-packaged IC needs a proper stencil match, controlled hot air temperature, and clean pad prep — rushing the reflow on a power IC is one of the more common reasons technicians see the same dead phone symptom return a week later. If you're running diagnostics with a UFI box or similar tool before committing to an IC change, confirm the current draw pattern matches a power IC fault rather than a baseband or PMIC-adjacent component fault, since several ICs on these boards can present with a similar dead symptom.This listing is for the IC only — reballing service, stencils, and flux are sold separately in our tools and accessories sections. Every unit is new, untested-on-board (as is standard for supervisor ICs, since bench testing requires board placement), and sourced for accuracy against the verified part number.