The **LR1106L-35-AF5-R** is a low-dropout (LDO) linear voltage regulator. It is designed to provide a stable 3.5V output while maintaining high efficiency and low noise, typically used in battery-powered or portable electronic devices. --- ### ## Technical Specifications Below is a summary of the key electrical parameters for the LR1106L-35-AF5-R: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Output Voltage** | 3.5V | Fixed output version | | **Input Voltage Range** | Up to 6.0V | Maximum operating input | | **Output Current** | 250mA - 300mA | Typical continuous load | | **Dropout Voltage** | ~200mV @ 100mA | Low overhead required for regulation | | **Quiescent Current** | ~50µA | Low power consumption in idle | | **Package Type** | SOT-25 / SOT-23-5 | Surface-mount, 5 pins (AF5 code) | --- ### ## Pin Configuration (SOT-25) The "AF5" suffix indicates a 5-pin SOT package. The typical pinout for this series is as follows: 1. **VIN**: Input Voltage Supply. 2. **GND**: Ground reference. 3. **EN (Enable)**: High = On; Low = Shutdown mode. 4. **NC/BP**: No connection or Bypass capacitor (for noise reduction). 5. **VOUT**: Regulated 3.5V Output. --- ### ## Key Features & Protection * **Low Dropout (LDO):** Can maintain a 3.5V output even when the input voltage is very close to the output voltage. * **Enable Function:** Includes a shutdown pin to reduce power consumption to near-zero when the device is not in use. * **Thermal Overload Protection:** Automatically shuts down the device if the internal temperature exceeds safe limits. * **Short Circuit Protection:** Limits current to prevent damage if the output is shorted to ground. --- ### ## Typical Application Circuit To ensure stability, LDOs require external capacitors. ```cpp // Schematic Representation [Input Supply] ---- [VIN] (LR1106) [VOUT] ---- [Load] | | [1uF Ceramic Cap] [1uF Ceramic Cap] | | [GND] [GND] ``` ---