## L4075G-AF5-R: Technical Overview The **L4075G-AF5-R** is a specific low-dropout (LDO) linear voltage regulator, commonly manufactured by UTC (Unisonic Technologies Co., Ltd). It is designed for applications requiring high stability, low noise, and low power consumption. --- ### 1. Key Technical Specifications Below are the primary electrical characteristics for this component: | Parameter | Value / Description | | :--- | :--- | | **Component Type** | CMOS Low Dropout (LDO) Voltage Regulator | | **Output Voltage** | 7.5V (Fixed) | | **Package Type** | SOT-25 / SOT-23-5 | | **Pin Count** | 5 Pins | | **Output Current** | Typically 300mA to 500mA (load dependent) | | **Dropout Voltage** | Low (typically < 300mV at full load) | | **RoHS Status** | Halogen Free / Lead-Free (indicated by 'G' and 'R') | --- ### 2. Part Number Breakdown The suffixing in the part number provides critical information about the packaging and material: * **L4075**: The base model number, indicating the 4075 series with a **7.5V** output. * **G**: Denotes **Halogen-Free** and Antimony-Free material. * **AF5**: Refers to the **SOT-25** (also known as SOT-23-5) package type. * **R**: Indicates **Tape and Reel** packaging for automated assembly. --- ### 3. Pin Configuration (SOT-25) In a standard AF5 (SOT-25) package, the pinout usually follows this structure: 1. **VIN**: Input Voltage Supply. 2. **GND**: Ground Reference. 3. **CE / EN**: Chip Enable (Active High). Allows the device to be shut down to save power. 4. **NC / ADJ**: No connection (for fixed versions) or Feed-back. 5. **VOUT**: Regulated Output Voltage (7.5V). --- ### 4. Features & Applications #### Features: * **Low Quiescent Current**: Ideal for battery-powered devices. * **High Ripple Rejection**: Ensures a clean DC output even with noisy input sources. * **Built-in Protections**: Usually includes thermal shutdown and short-circuit current limiting. #### Applications: * Battery-powered equipment (handheld scanners, portable tools). * Communication equipment. * Voltage regulation for sensors and microcontrollers requiring a stable 7.5V rail. * Reference voltage sources. ---