The UP0104S datasheet highlights various applications for the chip, including:
The is a dual synchronous buck PWM controller designed specifically for low-output-voltage, high-current DC-DC conversion. Manufactured originally by uPI Semiconductor (UniPower Integrated Circuit), this IC provides two independent regulated outputs or can be configured for a single high-current output using two interleaved phases.
Most variants are rated for 500mA to 1A , depending on the specific package and thermal dissipation.
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The UP0104S belongs to a family of regulators (including the UP0104P, T, and R) designed for stability and precision in complex signal-processing environments. Up0104s Datasheet
Delivers the regulated lower-voltage standby output, typically producing the 3VSB (3.3V Standby) rail or 1.05V core power depending on the resistor divider layout.
: Commonly found in an SOP-8 (Exposed Pad) or PSOP-8 package, which helps with heat dissipation. Pin Configuration (Typical SOP-8) Pin Number Description BOOT
The motherboard showed no signs of life. The 3VSB was measured at a low 1.48V instead of the required 3.3V. The power supply's 5VSB was present.
The UP0104s is most commonly found in the or SOP-8 package. While the exact pin mapping can vary slightly between "fixed" and "adjustable" versions, the standard layout usually follows this logic: VIN (Input): The unregulated power supply input. GND (Ground): The common reference point for the circuit. VOUT (Output): The regulated, steady voltage output. This public link is valid for 7 days
The is a synchronous buck (step-down) PWM controller designed to convert a higher input voltage (e.g., 12V) into a lower, precisely regulated output voltage (e.g., 1.2V–5V) with high efficiency. It is frequently found in DDR memory power supplies , chipset/VCCIO rails , and general point-of-load (POL) regulation on PC motherboards, LCD TVs, and embedded systems.
While traditional fixed regulators feature simple input/output structures, the uP0104S acts as a controller that drives internal or external nodes to provide tightly regulated voltages. For example, in typical motherboard standby implementations (such as MSI platforms), the operational path relies on standard pin assignments:
The UP0104S is a versatile, dependable power IC. Given its widespread use in industrial and consumer electronics, it is often available from distributors specializing in , such as AliExpress or Worldway .
The following integrated circuits serve as : Can’t copy the link right now
: Optimized for high-speed data transmission and low-latency signal buffering. Pin Configuration & Application
The UP0104S is a voltage regulator or a power management IC designed to convert one voltage level to another. Think of it as a precision valve for electricity, ensuring that sensitive components like CPUs, memory, and logic chips receive a clean, stable, and accurate power supply. It's commonly found on PC motherboards and graphics cards, where it often handles essential "standby" voltages or supplies power to auxiliary systems like the PCIe bus.
Стабилизатор uP0104 и его аналоги - Cxem.net