The **UB240L-AF-S08-R** is a specific low-dropout (LDO) linear voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd). It is designed to provide a stable output voltage while minimizing power loss. --- ### 1. Technical Specifications Below are the primary technical parameters for this specific part number: | Parameter | Specification | | :--- | :--- | | **Output Voltage** | 2.4V (Fixed) | | **Package Type** | SOP-8 | | **Input Voltage Range** | Up to 12V | | **Output Current** | ~300mA to 500mA (typical for UB240 series) | | **Dropout Voltage** | Low (typically < 0.5V at full load) | | **Operating Temperature** | -40°C to +85°C | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Part Number Breakdown Understanding the suffix codes helps identify the physical and chemical properties of the component: * **UB240L**: The base series (LDO Regulator) with a **2.4V** fixed output. * **AF**: Refers to specific internal circuitry or versioning (typically indicates standard characteristics for this series). * **S08**: Indicates the package type, which is **SOP-8** (Small Outline Package with 8 pins). * **R**: Indicates the packaging method, usually **Tape & Reel** for automated assembly. --- ### 3. Key Features * **Low Quiescent Current:** Designed to consume very little power during standby mode, extending battery life in portable devices. * **Stability:** Requires minimal external components (usually just input and output capacitors) to maintain a steady 2.4V line. * **Built-in Protections:** Typically includes thermal shutdown and current limiting to prevent the chip from burning out under fault conditions. --- ### 4. Pin Configuration (Typical SOP-8) While you should always consult the official UTC datasheet, the SOP-8 layout for LDOs often follows this logic: ```text Pin 1: VOUT (Output) Pin 2: GND (Ground) Pin 3: GND (Ground) Pin 4: NC (No Connection) Pin 5: EN (Enable / Shutdown) Pin 6: GND (Ground) Pin 7: GND (Ground) Pin 8: VIN (Input Voltage) ``` *(Note: Multiple Ground pins are often used for heat dissipation in the SOP-8 package.)* --- ### 5. Common Applications * **Battery-Powered Equipment:** Ideal for devices using Li-ion batteries that need a steady 2.4V rail. * **Post-Regulation:** Used after a switching regulator to "clean up" noise for sensitive analog circuits. * **Microcontrollers:** Providing power to low-voltage MCUs or sensors.