NT50358 Display IC

Your repair bench sees dim-screen and no-backlight complaints almost every week, and the NT50358 is one of the first chips you check when that happens. This is a Novatek-manufactured backlight control IC in a compact 15-pin package, built to sit directly on the display power circuit of the motherboard and regulate the voltage that drives the LCD backlight.When a customer brings in a phone with a dead display but the phone still vibrates, rings, or shows signs of life through adb or flash tools, the fault often traces back to this exact IC or the diodes and coil sitting next to it. You measure the backlight line, confirm the boost circuit isn't outputting the correct voltage, and if the surrounding passive components test fine, the NT50358 becomes the next component you desolder and replace.The chip shows up on several Android boards from Xiaomi, Meizu, Huawei, LeEco, and other Android platforms, wherever the manufacturer used this specific Novatek backlight controller in the display power path. You'll also find it referenced as a direct fix part for the LeEco Le 1S (X500/X501) light control circuit and on Huawei Honor 8 series boards. Because backlight IC placement varies by board revision, always confirm the IC marking and footprint against your schematic or a known-good board before you commit to a hot air job.Working with this IC on your bench means treating it like any 15-pin QFN-style repair: clean the pads with flux and solder wick before you pull the old chip, keep your hot air station at a controlled temperature to avoid lifting neighboring components, and use a microscope to check pad alignment before reflow. A jumper on a lifted pad here can look like a fixed screen for a day and then fail again, so proper reballing and a clean placement matter more than speed on this particular repair.Dead after flash symptoms rarely point to this IC, since flashing doesn't touch backlight hardware. If you see hang on logo with the backlight also out, check your power rail first; if the logo shows but the backlight stays dark, that narrows the fault down to this IC's territory. A quick way to confirm before removal: apply direct voltage to the backlight line and see if the display lights up. If it does, the IC or its boost components are your target.Since this is a bare component-level part and not a full display assembly, you'll pair it with your existing rework tools rather than a full disassembly kit. Keep a few of these on hand alongside your other light control and charging ICs, since backlight and charging faults share bench time on most repair days. This chip works best in the hands of a technician comfortable with fine-pitch SMD soldering, since a cold joint or bridged pad on a 15-pin footprint this small won't show up until the board is already reassembled.For workshops running higher repair volume, stocking the NT50358 alongside compatible boost diodes and coils cuts your turnaround time on backlight jobs, since you won't wait on a supplier mid-repair when the fault isolates to this exact IC.