SM5504 Charging IC (18 Pins) for Samsung G7200

Every GSM technician who works Samsung mid-range boards runs into the SM5504 sooner or later. It sits right on the charging path of the Galaxy Grand 3 (G7200) and the Galaxy Core Prime (G360H/DS), and when it fails, the phone either stops charging completely or starts showing random charging issue symptoms that send new technicians chasing the wrong fault.Silicon Mitus designed this chip as a combined USB control and charging IC. On these Samsung boards it manages accessory detection at the USB port — telling the phone whether a charger, a data cable, or an OTG device is plugged in — and it controls how charging current flows once that detection happens. When this IC goes bad, you get one of a few classic patterns on your bench: dead phone with zero charging response, "charging but not increasing" behavior, USB port not detected by PC, or a board that only charges when you wiggle the cable. If the customer says the phone gets hot near the charging port or the charging LED never comes on, this IC belongs on your checklist before you start pulling the charging port itself.This is where board-level diagnosis pays off. A lot of shops replace the charging port first because it is the easier job, only to find the fault persists. Before you order a new port, put your meter on the charging IC lines and check for shorts or open connections around the BGA18 footprint. If you're running a voltage or current test on the VBUS line and getting nothing past this IC, that's your confirmation. Technicians who keep a few of these in stock save themselves a second visit from the customer.Installation is straightforward reballing work if your bench is already set up for BGA repair. Clean the pad thoroughly after removing the old IC — residue under a fresh SM5504 is one of the most common reasons a "successful" reball still doesn't fix the charging issue. Use a preheater to bring the board to a stable temperature before hot air work, keep your nozzle centered over the 18-pin footprint, and confirm reflow with a magnifier or microscope before powering the board back on. Rushing the alignment on an 18-pin BGA is the fastest way to turn a charging repair into a dead-after-flash situation, so take the extra minute to check pad alignment under the scope.For diagnosis before you commit to a reball, check continuity between the charging port pins and the IC footprint, and look for any physical corrosion or lifted pads if the phone came in after liquid exposure. Boards that came in dead after a previous repair attempt often have marginal solder joints on this exact chip, since it sits close to the charging port and takes repeated thermal stress from previous port replacements.Stocking genuine SM5504 chips instead of relying on donor boards keeps your turnaround time predictable. Donor-board parts carry unknown thermal history and sometimes fail again within weeks, which means a comeback repair and a frustrated customer. A fresh IC from a reliable source removes that variable from your workflow.This part fits directly into your ISP and board-level repair process alongside your existing reballing kit, hot air station, and BGA holder — no special adapter needed, just standard 18-pin BGA rework practice.