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 PSOP-8 package is designed for improved thermal performance, but for 3A loads, designers should ensure adequate copper pours and thermal vias on the PCB.
The UP0104S differs from its siblings (like the UP0104P) through its internal arrangement designed to . Pinout Overview
If you are in the design phase, ensure you check the specific operating voltage range in the latest datasheet to match your circuit requirements.
Main Input Power Supply rail. Requires decoupling capacitors. VOUT / PHASE Regulated output voltage delivered to the load sub-system. 3 GND Up0104s Datasheet
The graphics card powered on, but there was no signal to the monitor. All main voltage rails (GPU core, memory) were present except for the PCI_V rail, which was measured at 0.08V (should be ~1.07V).
| Parameter | Value | | :--- | :--- | | | 5V to 12V (Absolute max 13.2V) | | Output Voltage Range | 0.9V to 3.3V (externally adjustable) | | Number of Outputs | 2 (Dual, independent) | | Switching Frequency | 200 kHz to 500 kHz (programmable) | | Control Method | Voltage Mode PWM | | Protection Features | UVLO, OCP, OVP | | Package | SOP-14L (Small Outline Package, 14 pins) |
If you can provide more details or context about the UP0104S, such as:
The uP0104S by uPI Semiconductor Corp/UIMICRO is a high-speed IC in an SOP-8 package, designed for space-constrained applications like mobile and computing devices. It features a -40°C to 105°C operating range and is RoHS compliant, making it suitable for high-density, high-performance environments. For detailed technical specifications, visit Veswin Electronics UP0104S UIMICRO Other Components - Veswin Electronics The UP0104S is a versatile, dependable power IC
Rated for extended temperatures from -40°C to 105°C . Internal Architecture and Pinout Analysis
Engineers must adhere strictly to the absolute maximum ratings outlined in the datasheet to guarantee hardware longevity. Running the IC beyond these parameters can lead to immediate silicon degradation or permanent component breakdown.
Standard SOP-8 / SOIC-8 (Small Outline Package, 8 pins).
: Turns off the chip if it exceeds safe operating temperatures. The UP0104S differs from its siblings (like the
: Specified to handle output currents typically up to 2.4 A .
By internalizing the information above, you have effectively read, interpreted, and learned to apply the official . Keep this article bookmarked as a quick reference—and always keep a copy of the OEM datasheet open on your second monitor while debugging.
| Pin | Name | Description | |-----|------|-------------| | 1 | VCC | Supply voltage (4.5V–13.2V typical) | | 2 | EN1 | Enable for channel 1 | | 3 | FB1 | Feedback for channel 1 (0.6V reference) | | 4 | COMP1 | Compensation for channel 1 (RC to FB1) | | 5 | LGATE1 | Low-side gate driver for channel 1 | | 6 | PGND | Power ground | | 7 | PHASE1 | Switch node for channel 1 (connect to inductor & high-side source) | | 8 | BOOT1 | Bootstrap for channel 1 high-side driver | | 9 | UGATE1 | High-side gate driver for channel 1 | | 10 | PHASE2 | Switch node for channel 2 | | 11 | UGATE2 | High-side gate driver for channel 2 | | 12 | BOOT2 | Bootstrap for channel 2 | | 13 | LGATE2 | Low-side gate driver for channel 2 | | 14 | FB2/COMP2 | Combined FB/COMP for channel 2 |
: Prevents current spikes during power-up to protect sensitive downstream components. Protection Mechanisms :