SGM41510 Charging iC 5A I2C Fast Charger TQFN-24

SGM41510 Charging IC for Charging Fault Repair on Mobile Boards

The SGM41510 Charging iC from SGMICRO is a battery charger and power path management chip. It controls how your phone takes power from the cable and how it feeds the battery and the system rail. You meet this class of IC every time a customer brings in a charging issue, a dead phone, or a handset that shows charging but never climbs past a low percentage. The chip supports single-cell Li-Ion and Li-polymer batteries and delivers up to 5A of charge current under I2C control. Inside the TQFN-4×4-24L package you get the input reverse blocking FET, the high-side and low-side switching FETs, the battery FET, and the bootstrap diode for the high-side gate drive. That integration leaves fewer loose parts around the chip on your board, so an IC change karna job means you replace one device instead of chasing several discrete components.

How the SGM41510 Handles Power Path and Charging

Your charger voltage arrives at VBUS, passes the reverse blocking FET, and enters a 1.5MHz synchronous buck stage that steps the voltage down for the battery and the system rail. The input range runs from 3.9V to 14V, so the chip accepts higher adapter voltages without extra front-end parts. The power path keeps the system rail alive while the battery charges, and the SYS rail regulates between 3.5V and 4.5V. Charge efficiency reaches 93.5% at 1A, 92.5% at 2A, and 90.8% at 3A, which keeps heat lower on your board. The IRCOMP resistance compensation feature delivers maximum charging power to the battery despite trace resistance. When the charge current falls below the preset limit and the battery sits above the recharge threshold, the charger ends the cycle and starts a new one if the battery voltage drops.

Protection Features and Fault Behavior on the Bench

The datasheet lists input under-voltage lockout, input over-voltage protection, over-current protection, a charging safety timer, and thermal shutdown. These protections explain why a phone may refuse to charge after a short or a bad adapter spike, and they point you toward the right test steps. You check VBUS first, then SYS and BAT, and you read the I2C status registers when your tools allow it. If the chip runs hot on the charger, you suspect a shorted rail or a damaged IC and you plan a hot air removal. The chip also supports an adjustable voltage OTG boost mode, and the datasheet schematic shows 5V at 2.4A on VBUS. Treat that mode as one more reason to check the line for shorts before you power the board.

Fitting the SGM41510 Into Your Repair Workflow

You place this IC in the PCB repair stage, after you rule out the cable, the charging port flex, and the battery. Measure the VBUS line with your multimeter, then look under a microscope for corrosion or lifted pads around the chip. When the fault points to the IC, you lift it with a hot air station at a controlled temperature and clean the pads before you reflow the new part. A reballing kit and a PCB holder make that job cleaner, and a hot air station is the natural upgrade when your daily volume grows. Check the exact marking on your board before you order, because charger ICs in the same SGMICRO family differ in current rating and register map. Ask KB GSM Store for the latest SGM41510 price in Pakistan and current stock.