The **88C41L-AF5-R** is a specific part number typically associated with a **Low Dropout (LDO) Voltage Regulator**, manufactured by Unisonic Technologies (UTC). Below is a detailed breakdown of its specifications, pinout, and characteristics. ### 1. General Specification This component is designed to provide a stable output voltage while maintaining a very low difference between input and output voltage levels. | Parameter | Description | | :--- | :--- | | **Part Number** | 88C41L-AF5-R | | **Component Type** | CMOS Low Dropout Regulator (LDO) | | **Output Voltage** | 4.1V (Fixed) | | **Package Type** | SOT-25 / SOT-23-5 | | **Output Current** | Typically up to 300mA - 500mA | | **Status** | RoHS Compliant (Lead-Free) | --- ### 2. Part Number Breakdown The nomenclature reveals the internal configuration of the chip: * **88C**: Series designation for UTC CMOS LDOs. * **41**: Represents the output voltage (4.1 Volts). * **L**: Indicates "Lead-free" or "Low Quiescent Current" (depending on specific UTC datasheet revisions). * **AF5**: Refers to the **SOT-25** package (also known as SOT-23-5). * **R**: Indicates "Tape and Reel" packaging for automated assembly. --- ### 3. Pin Configuration (SOT-25) Standard UTC 88C series regulators usually follow this pinout: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | **VIN** | Input Supply Voltage | | 2 | **VSS** | Ground | | 3 | **CE / EN** | Chip Enable (Active High) | | 4 | **NC / BP** | No Connection or Bypass Capacitor | | 5 | **VOUT** | Regulated Output Voltage (4.1V) | --- ### 4. Key Features * **Low Dropout Voltage:** Minimizes power dissipation and allows the device to operate even when the battery voltage is close to the output voltage. * **Low Quiescent Current:** Ideal for battery-powered portable electronics to extend battery life. * **Built-in Protections:** Usually includes over-current protection and thermal shutdown. * **High Ripple Rejection:** Ensures a clean DC output, making it suitable for RF and sensitive analog circuits. --- ### 5. Common Applications * Battery-powered equipment (Mobile phones, Cameras). * Reference voltage sources. * Post-regulation for switching DC-DC converters. * Wireless communication modules.