Up0104s Datasheet !new! -

A common alternative often found on budget desktop hardware platforms. Troubleshooting a Failing uP0104S

: Ensures stable, ripple-free power distribution in portable media hardware and home theater receivers.

The uP0104 series consists of several variants that differ primarily in their physical layout and thermal optimization:

Unlike some standard regulators, the UP0104S arrangement is specifically designed to minimize parasitic capacitance for high-speed performance. Manufacturer & Availability Up0104s Datasheet

The is a high-performance, linear regulator IC designed for applications requiring precise voltage regulation and high current capabilities in a compact package. Primarily developed by uPI Semiconductor Corp , this device is commonly found in computer hardware, graphic cards, and industrial power supplies. This article serves as an in-depth guide to the Up0104s datasheet , providing technical specifications, pinout configurations, applications, and performance features based on current industry data as of June 2026. 1. Introduction to the Up0104s Linear Regulator

: The physical internal layout of the "S" suffix variant is specifically tuned to minimize parasitic capacitance. This configuration makes it highly efficient at managing high-speed data transmission lines and fast-transient motherboard rails. Pin Configuration and Internal Bonding

The uP0104 is a linear regulator, meaning it dissipates power as heat. The power dissipation ($P_D$) is calculated as: $$P_D = (V_in - V_out) \times I_load$$ For example, regulating 12V down to 5V at 500mA results in 3.5 Watts of heat dissipation. In such cases, the SOT-223 package alone may be insufficient, and an external heatsink or copper plane on the PCB is required. A common alternative often found on budget desktop

package, which includes a thermal pad on the bottom for heat dissipation. Key Features and Protection

This paper provides a comprehensive analysis of the uP0104 series of positive, low-dropout (LDO) linear voltage regulators. These components are critical in power management systems, offering high ripple rejection and low quiescent current, making them ideal for battery-powered and noise-sensitive applications. This document covers the pin configuration, electrical characteristics, and practical application circuits based on standard datasheet parameters. such as motherboards and graphics cards

┌───────────────────────────────┐ │ uP0104 Core Design │ └──────────────┬────────────────┘ ┌───────────────────────┼───────────────────────┐ ▼ ▼ ▼ ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │ uP0104P │ │ uP0104T │ │ uP0104S │ │ Standard I/O │ │ Enhanced Thermal│ │ Low Parasitics │ │ Buffer Rail │ │ Management │ │ High Density │ └─────────────────┘ └─────────────────┘ └─────────────────┘

The following integrated circuits serve as :

: Often includes a thermal pad (sometimes referred to as the 9th pin) on the bottom of the IC to aid heat dissipation.

The is a specialized linear voltage regulator manufactured by uPI Semiconductor Corp (sometimes listed under UIMICRO). It is primarily used in computer hardware, such as motherboards and graphics cards, to provide stable power to low-voltage components. Key Technical Specifications