U187C

U187C is an integrated circuit originally developed for use in power‑supply applications. The device is packaged in a 48‑pin QFN (quad‑flat, no‑lead) package, weighs about 0.15 kg, and typically operates from a supply range of 3.6 V to 5.5 V. Its primary function is to provide a regulated 12 V output suitable for driving high‑current loads such as DC‑motor controllers or large LED arrays. The internal architecture combines an adjustable voltage regulator, a high‑precision PWM controller, and over‑current protection circuitry, allowing the module to deliver up to 3 A at the regulated 12 V level within a thermal envelope of 80 °C.

The control logic in U187C can be interfaced through an I²C bus, enabling external firmware to configure operating modes, input tolerances, and fault response. Depending on the particular silicon revision, the part can also accept an external enable line that permits dynamic shutdown of the output to reduce power consumption during idle cycles. The device is compatible with a wide range of input supplies and has been widely used in robotics, automation, and industrial control systems, where a robust on‑board regulator streamlines motherboard design by reducing external component count.

Standard datasheets for U187C include detailed pin‑out diagrams, electrical characteristics, and application circuit examples that illustrate typical use cases such as motor‑drive power rails, sensor‑powered interface boards, and software‑controlled dimmable illumination. The manufacturer’s reference manuals also provide guidelines for thermal management, EMI/EMC compliance, and long‑term reliability testing, making U187C a documented choice for engineers constructing efficient, high‑current digital power supplies.