NCP81253 Power Management IC NCP81253MNTBG

The NCP81253 Power Management IC, commonly marked as NCP81253MNTBG or CG*, is a high-performance multi-phase PWM voltage regulator controller (VRM) from On Semiconductor (onsemi). This IC is widely used in laptop motherboards, desktop systems, graphics cards, and high-performance computing platforms, where precise and stable power delivery is essential.

NCP81253 is designed to control CPU and GPU power rails, providing accurate voltage regulation, power sequencing, and load management under varying operating conditions. Its advanced control architecture ensures reliable system operation and improved efficiency in demanding environments. The IC is frequently replaced during chip-level motherboard repair to resolve issues such as no power, unstable booting, voltage drop, or random shutdowns.

At OKSpare, all NCP81253 ICs are quality tested before dispatch. IC ready stock OKSpare ensures trusted supply from Nehru Place, Delhi.

Technical Summary

• Multi-phase PWM voltage regulator controller IC

• Used in CPU and GPU power management circuits

• Supports efficient and stable DC-DC conversion

• Common marking CG* on chip surface

• Suitable for chip-level repair and replacement