The **LD1085D2M36-R** is a high-performance, low-dropout (LDO) positive voltage regulator. It is widely used in electronic circuits requiring a stable voltage supply with high current capability. --- ### ## Technical Specifications Below is a breakdown of the key electrical characteristics of the LD1085D2M36-R: | Parameter | Specification | | :--- | :--- | | **Output Voltage** | Fixed 3.6V | | **Output Current** | Up to 3A | | **Dropout Voltage** | Typ. 1.3V at 3A | | **Input Voltage (Max)** | 30V | | **Package Type** | D2PAK (TO-263) | | **Operating Temperature** | -40°C to 125°C | | **Line Regulation** | 0.015% (Typical) | | **Load Regulation** | 0.1% (Typical) | --- ### ## Key Features 1. **High Current Output:** Capable of providing up to 3A, making it suitable for high-power logic circuits and microprocessors. 2. **Internal Protection:** Includes internal current limiting and thermal shutdown protection to prevent damage during fault conditions. 3. **Pin Compatibility:** It is pin-to-pin compatible with standard three-terminal adjustable regulators. 4. **Low Dropout:** The device remains functional even when the input voltage is only slightly higher than the output voltage (approx. 1.3V difference). --- ### ## Application Circuit Overview To ensure stability, LDOs require external capacitors. For the LD1085 series, a tantalum output capacitor is generally recommended. ```c // Basic Connection Diagram Input Pin ----[ + Vin ]----( 10uF Cap )---- GND Output Pin ----[ + 3.6V ]---( 10uF Cap )---- GND Tab/Pin 2 --------------------------------- GND (Common) ``` --- ### ## Common Applications * **High Efficiency Linear Regulators:** Used in power supplies where switching noise must be avoided. * **Post Regulators:** Often used after a switching power supply to provide a "cleaner" DC signal. * **Battery Chargers:** Due to its current limiting features. * **Microprocessor Supplies:** Ideal for 3.6V logic circuits requiring high peak currents.