### LR9113L-30-AF5-R: Part Overview and Specifications The **LR9113L-30-AF5-R** is a high-accuracy, low-dropout (LDO) linear voltage regulator. It is designed for applications requiring a stable power supply with minimal noise and low power consumption. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Output Voltage** | 3.0V (Fixed) | | **Input Voltage Range** | Up to 6.0V | | **Output Current** | 300mA to 600mA (load dependent) | | **Dropout Voltage** | Typically 200mV @ 300mA | | **Package Type** | SOT-25 / SOT-23-5 (AF5 suffix) | | **Accuracy** | ±2% | | **Quiescent Current** | ~60µA (Typical) | --- ### 2. Part Number Breakdown The nomenclature provides specific details about the component's configuration: * **LR9113**: The base series number for the CMOS LDO regulator. * **L**: Lead-free (RoHS compliant) plating. * **30**: Represents the fixed output voltage of **3.0 Volts**. * **AF5**: Refers to the physical package style (SOT-25 / SOT-23-5). * **R**: Tape and Reel packaging for automated assembly. --- ### 3. Pin Configuration (SOT-25) Typically, the device follows a standard 5-pin layout: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **VIN** | Supply Voltage Input | | 2 | **VSS** | Ground | | 3 | **CE / EN** | Chip Enable (Active High) | | 4 | **NC / BYP** | No connection or Bypass Capacitor (depending on variant) | | 5 | **VOUT** | Regulated Output Voltage (3.0V) | --- ### 4. Core Features and Applications #### Features: * **Low Dropout:** Allows the device to operate efficiently even when the input voltage is only slightly higher than the output voltage. * **Built-in Protections:** Usually includes thermal shutdown and current limiting to prevent damage during fault conditions. * **Stability:** Designed to be stable with low-ESR ceramic capacitors. #### Common Applications: * **Mobile Devices:** Cell phones, PDAs, and handheld scanners. * **Battery Powered Equipment:** Due to low quiescent current. * **Post-Regulation:** Cleaning up noise from switching power supplies for sensitive analog circuits. --- ### 5. Typical Application Circuit To use this part effectively, the following basic setup is required: ```text [Input Voltage] ----[ VIN ]-------[ VOUT ]---- [3.0V Output] | | [1uF Cap] [1uF Cap] | | [Ground] ------------[ VSS ]--------[ VSS ]---- [Ground] ```