The **LP5064R-R47M** is a high-current, low-profile power inductor typically used in DC-DC converter circuits. It belongs to a class of surface-mount devices (SMD) designed for high-frequency power electronics. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the technical specifications: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **LP** | Series Category | Low Profile / High Current Inductor | | **5064** | Physical Size | Dimensions (approx. 5.0mm x 6.4mm) | | **R** | Core Material | Often denotes a Carbonyl Iron or Composite core | | **R47** | Inductance Value | **0.47 µH** (Microhenries) | | **M** | Tolerance | **±20%** | --- ### 2. Key Technical Specifications While exact parameters can vary slightly by manufacturer (such as Link-PP or Bourns equivalents), the standard specifications for this part class are: * **Inductance:** 0.47 µH. * **DC Resistance (DCR):** Extremely low (typically in the range of 1.5mΩ to 5mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** High capacity, usually ranging from 15A to 25A depending on the specific build. * **Operating Temperature:** Generally rated for $-40^\circ\text{C}$ to $+125^\circ\text{C}$. * **Shielding:** Shielded construction to reduce Electromagnetic Interference (EMI). --- ### 3. Core Features and Benefits * **High Efficiency:** The low DCR ensures minimal heat generation during high-current operation. * **Soft Saturation:** The composite core material typically allows for a "soft" saturation curve, meaning the inductance drops gradually rather than sharply when the current limit is exceeded. * **Compact Footprint:** The "Low Profile" (LP) designation makes it suitable for slim electronics like laptops or tablets. --- ### 4. Typical Applications These inductors are found in power management stages where voltage regulation is critical: 1. **Voltage Regulator Modules (VRM):** Used in CPU and GPU power supplies on motherboards. 2. **Point of Load (POL) Converters:** Converting a higher bus voltage (e.g., 12V) down to a lower IC voltage (e.g., 1.2V). 3. **High-speed Storage:** SSD power rails. 4. **Battery Powered Devices:** Due to their high efficiency and small size. --- ### 5. Equivalent Circuit Representation In a schematic, this part is represented as a standard inductor with its parasitic resistance: ```text L = 0.47uH DCR ≈ 3mΩ ----( WIRE COIL )----[ RESISTOR ]---- ```