Up0104s Datasheet Fix Jun 2026

Features integrated over-current protection and over-temperature protection to prevent damage to the device and connected circuitry 3. Up0104s Pinout and Internal Structure

Стабилизатор uP0104 и его аналоги - Cxem.net

The is a high-performance, specialized Low Dropout (LDO) linear voltage regulator manufactured by uPI Semiconductor Corp (and alternatively produced by UIMICRO ). Designed primarily for space-constrained computing applications, motherboard power management systems, and graphics cards like the MSI GTX 650, this integrated circuit (IC) steps down input voltages with exceptional line and load regulation. Because official standalone documentation can be hard to source on public portals like ALLDATASHEET , this comprehensive technical deep-dive serves as an engineering reference guide, synthesizing vital electrical specifications, pin configurations, layout guidelines, and replacement strategies. Core Technical Specifications Up0104s Datasheet

Understanding the standard pin structure of the uP0104S is critical for circuit design and board diagnostics. Pin Number Description Power Good indicator output / Chip Enable logic input. 2 Control Circuit Supply Voltage (Powers internal logic). 3 Main Power Input (High-current supply input line). 4 VREF / ADJ Voltage Reference or feedback adjustment pin. 5 No Internal Connection (No internal bond wire to the die). 6 Regulated Output Voltage (High-current output line). 7 Ground Reference. 8 Feedback pin for output voltage monitoring. 9 (Pad) Thermal Pad

The UP0104S is a reliable, cost-effective dual controller. When repairing a motherboard with no memory or chipset voltage, checking this IC’s pins is a quick diagnostic step. Always verify the exact suffix (e.g., UP0104S vs UP0104S-A) as pinout or features may vary slightly. Because official standalone documentation can be hard to

The uP0104S is a robust and dependable linear regulator that plays a vital role in the complex power systems of modern motherboards and graphics cards. For engineers, enthusiasts, and repair professionals, understanding its core functionality, typical applications, and available substitutes is essential. While the information in this guide has been compiled from real-world sources, it is always recommended to consult official manufacturer datasheets when available for the most accurate and detailed information.

Specified for an extended range of -40°C to 105°C . 2 Control Circuit Supply Voltage (Powers internal logic)

Laptops, tablets, and portable devices. Enterprise Systems: Servers and networking equipment.

At its core, the UP0104S functions as a linear voltage regulator, creating a stable, lower voltage from a higher, potentially noisy input. Unlike the high-frequency switching of a PWM controller, a linear regulator operates by dissipating excess power as heat, making it suitable for moderate current demands where efficiency is not the primary concern.

Lift Pin 6 (VOUT) off the circuit pad. If the short circuit remains on the board pad, a capacitor or the primary chip it feeds (such as the GPU core or PCH bridge) is dead. If the short moves with the detached pin, replace the uP0104S immediately.

Follow typical compensation values from datasheet (e.g., 10kΩ + 10nF from COMP to GND).