The **ADP3309ARTZ-2.7-R7** is a high-precision, low dropout (LDO) linear voltage regulator. It belongs to the anyCAP® family from Analog Devices, known for its stability with a wide range of output capacitors. --- ### ## Technical Specifications | Parameter | Details | | :--- | :--- | | **Manufacturer** | Analog Devices Inc. | | **Output Voltage** | 2.7V (Fixed) | | **Input Voltage Range** | 2.8V to 12V | | **Output Current** | 100 mA | | **Dropout Voltage** | 120 mV @ 100 mA | | **Package / Case** | SOT-23-5 (Surface Mount) | | **Quiescent Current** | 70 µA (Typical) | | **Operating Temp** | -40°C to +85°C | --- ### ### Key Features 1. **anyCAP® Technology:** Unlike standard LDOs that require specific ESR (Equivalent Series Resistance) values, this part is stable with any type of capacitor, including multi-layer ceramic (MLCC), tantalum, or aluminum. 2. **High Accuracy:** It offers a ±0.8% accuracy at room temperature and ±1.4% over line, load, and temperature variations. 3. **Low Dropout Voltage:** Only requires 120mV overhead to maintain regulation at full load, extending battery life in portable electronics. 4. **Shutdown Mode:** Includes a logic-controlled shutdown pin that reduces current consumption to less than 1 µA. 5. **Protection Circuits:** Integrated current limiting and thermal overload protection. --- ### ### Pin Configuration (SOT-23-5) | Pin No. | Name | Description | | :--- | :--- | :--- | | 1 | **IN** | Input Voltage. | | 2 | **GND** | Ground. | | 3 | **$\overline{SD}$** | Shutdown Input (Active Low). Tie high for normal operation. | | 4 | **ERR** | Error Flag. Open collector output that goes low if output falls. | | 5 | **OUT** | Regulated 2.7V Output. | --- ### ### Typical Applications * Cellular Telephones * Laptop and Palmtop Computers * Battery-Powered Systems * Portable Medical Instruments * Post-Regulation for Switching Supplies