The **LP2950L-25-S08-R** is a low-power, low-dropout (LDO) voltage regulator. It is part of the popular LP2950 series, specifically designed to maintain a stable output voltage even when the input voltage is very close to the output. --- ### ## 1. Technical Specifications The suffix codes in the part number indicate the specific output voltage, package type, and packing method. | Feature | Specification | | :--- | :--- | | **Output Voltage** | 2.5V (Fixed) | | **Output Current** | 100mA (Maximum) | | **Input Voltage Range** | Up to 30V | | **Dropout Voltage** | ~40mV @ low load; ~380mV @ 100mA | | **Quiescent Current** | 75µA (Typical) | | **Package Type** | SOP-8 (Small Outline Package) | | **Operating Temp** | -40°C to +125°C | --- ### ## 2. Pin Configuration (SOP-8) In the SOP-8 package, several pins are often redundant or used for heat dissipation. | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **VOUT** | Regulated 2.5V Output | | 2, 3, 6, 7 | **GND** | Ground Reference | | 4 | **NC/Feedback** | No connection or specific sensing | | 8 | **VIN** | Unregulated Input Voltage | --- ### ## 3. Key Features * **Low Dropout:** It can regulate 2.5V even if the input is as low as ~2.9V. * **High Accuracy:** Usually features a ±0.5% to ±1% output voltage tolerance. * **Low Quiescent Current:** It draws very little power for its own operation, making it ideal for battery-powered devices. * **Protection Circuits:** Includes internal current limiting and thermal shutdown protection. --- ### ## 4. Typical Application Circuit To ensure stability, LDOs require external capacitors. ```mermaid graph LR A[Input Voltage] --> B(Capacitor 1uF) B --> C[LP2950L VIN] C --> D[LP2950L VOUT] D --> E(Capacitor 2.2uF) E --> F[Stable 2.5V Output] G[GND] --- C ``` --- ### ## 5. Part Number Breakdown * **LP2950:** Series name. * **L:** Lead-free/RoHS compliant. * **25:** Fixed 2.5V output. * **S08:** SOP-8 package. * **R:** Tape & Reel (packing method).