The **UL82AG-AE2-R** is a specific part number typically associated with an **Ultra-Low Dropout (ULDO) Linear Regulator** or a specific **Logic/Analog IC** (often manufactured by UTC - Unisonic Technologies). Below is a detailed breakdown of its specifications, pinout characteristics, and applications. --- ### 1. General Specifications While specific parameters can vary slightly based on the manufacturer's datasheet revision, the UL82 series generally follows these characteristics: | Property | Description | | :--- | :--- | | **Component Type** | Linear Voltage Regulator (LDO) / Power Management | | **Output Type** | Fixed or Adjustable (depending on sub-suffix) | | **Package Type** | SOT-23-5 or SOT-25 (indicated by "AE2") | | **Low Dropout Voltage** | Typically < 150mV @ Full Load | | **Input Voltage Range** | 2.5V to 6.0V (Standard Logic Levels) | | **Output Current** | Typically 150mA to 300mA | | **Operating Temp** | -40°C to +85°C | --- ### 2. Part Number Deciphering Manufacturers like UTC use a specific nomenclature for their ordering codes: * **UL82**: Series name (Ultra-Low Dropout Regulator). * **G**: Halogen-free and Lead-free (Green). * **AE2**: Package code (SOT-23-5). * **R**: Tape and Reel packaging. --- ### 3. Pin Configuration (Typical SOT-23-5) For the AE2 package, the pinout usually follows this standard layout: | Pin Number | Symbol | Function | | :--- | :--- | :--- | | 1 | **VIN** | Input Voltage Supply | | 2 | **GND** | Ground | | 3 | **EN / CE** | Chip Enable (Active High) | | 4 | **BP / NC** | Bypass Capacitor (for noise reduction) or No Connect | | 5 | **VOUT** | Regulated Output Voltage | --- ### 4. Key Features * **High PSRR:** Excellent Power Supply Rejection Ratio, making it suitable for RF and sensitive analog circuits. * **Low Quiescent Current:** Designed for battery-operated devices to extend standby life. * **Built-in Protection:** Usually includes thermal shutdown and current limiting circuitry. * **Stability:** Optimized for use with low-ESR ceramic capacitors. --- ### 5. Common Applications * **Mobile Devices:** Smartphones, tablets, and handheld GPS units. * **Wireless Modules:** Powering Bluetooth or Wi-Fi chipsets where noise must be kept to a minimum. * **Battery Powered Systems:** Portable medical equipment and IoT sensors. * **Digital Cameras:** Regulating power for image sensors. --- ### 6. Typical Application Circuit ```mermaid graph LR Vin[Input Voltage] --> C1[Input Cap 1uF] C1 --> Pin1[Pin 1: VIN] Pin2[Pin 2: GND] --> Ground Pin3[Pin 3: EN] --> High/Low Pin4[Pin 4: BP] --> C2[Bypass Cap] Pin5[Pin 5: VOUT] --> C3[Output Cap 1uF] C3 --> Load ```