DA9313-06 Charger IC

Charging complaints are one of the most common jobs that land on a technician's bench, and on OPPO R17 Pro, Reno4 Pro, Find X3, and Vivo IQOO7 boards, the DA9313-06 sits right at the center of that circuit. This chip manages the power conversion between the charging input and the battery cell, so when it fails, the symptoms usually point straight at charging: the phone won't charge at all, charging is painfully slow, the battery percentage jumps around, or the device gets hot near the charging area without actually topping up.Dialog Semiconductor designed the DA9313 series as a high-efficiency switched-capacitor power converter meant for dual-cell battery configurations, which is exactly why it shows up in flagship-class OPPO and Vivo boards that use fast-charging, stacked-cell battery designs. The IC handles the voltage conversion needed to charge these dual-cell packs efficiently, working at conversion efficiency levels that keep heat down and charging speed up. On a repair bench, that translates to one thing: if this IC goes bad, fast charging breaks first, and full charging failure follows soon after.For a technician diagnosing a charging issue on one of these boards, the DA9313-06 becomes a suspect once the basics are ruled out. Check the charging port and flex cable first, confirm there's no physical or liquid damage around the power IC region, and run a voltage check on the input and battery lines. If voltage isn't reaching the battery cell correctly despite a good port and a good battery, reballing or replacing this IC is the next logical step. Since it's a BGA-package chip, this is IC-level rework — you'll need a hot air station set for lead-free profiles, proper preheating to protect surrounding components, and a microscope or magnifier for placement accuracy given how small the ball pitch is on these packages.This is not a universal charging IC — it's specific to the board layout used in the OPPO R17 Pro, Reno4 Pro, and Find X3, along with the Vivo IQOO7. Fitting it on an unsupported board won't work even if the physical footprint looks similar, since firmware and power-tree configuration differ across OEMs and even across board revisions within the same brand. Always cross-check the exact model and, where possible, the board reference before ordering, since OPPO and Vivo frequently share chipsets across sub-models but wire the power tree differently.In a typical repair workshop, this IC gets pulled out for a few recurring complaints: a customer reporting "charging issue" where the phone charges intermittently or not at all, a board that shows dead after flash where the charging stage stopped responding after a software attempt, or a device that was working fine until it started hang on logo the moment a charger was connected. Because the fault sits right in the power delivery path, software resets, IMEI repair, or FRP tools won't touch it — this is strictly a hardware fault that needs IC change.Stocking the DA9313-06 makes sense for any shop that regularly handles OPPO and Vivo motherboard-level repairs, since charging faults on these specific models come back often enough to justify keeping the part on hand rather than sourcing it per job. Combine it with a proper reballing kit, PCB holder, and a soldering station capable of accurate temperature control, and this becomes a straightforward bench job rather than a guessing game.