Description

NCP81236AMNTXG NCP81236A 81236A QFN52 Laptop IC Chip

The NCP81236AMNTXG, commonly referred to as NCP81236A or simply 81236A, is a power rail controller integrated circuit (PMIC) used in laptop motherboards. It’s manufactured by ON Semiconductor and comes in a 52‑pin QFN package, which is typical of power management chips used on mainboards.

This IC is part of the NCP81236 family, which includes multi‑phase voltage regulator controllers designed to supply regulated power to key system components — especially CPU core rails and other critical low‑voltage supplies. On many laptop boards, this chip is responsible for generating and controlling multiple buck converter outputs that feed stable, precise voltages to the processor and related circuits.

Although detailed datasheets for the exact A suffix aren’t widely public online, a closely related part (NCP81236P) is described as a three‑rail controller with an SVID interface optimized for CPU power delivery in modern mobile systems. It uses advanced PWM control, differential current sensing, and adaptive voltage positioning to maintain tight voltage regulation under changing load conditions.

On laptop motherboards, the NCP81236A often integrates multiple buck converter controllers and sometimes MOSFET drivers that together form part of the CPU core power delivery subsystem. This makes it essential for stable operation, and if it fails, the system may fail to boot, fail to provide correct CPU voltage, or show power‑related faults.

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Location: Sri Lanka

Tips:
To avoid placing an incorrect order or purchasing the wrong item, always refer to the datasheet and verify the specific part number before ordering.

Note:
When purchasing this product from our site and installing it on the motherboard, you do so at your own risk. We are not liable for any damage to the motherboard.

(For any backorders, the delivery time is 10 to 14 days.)