The **LP5050R-R56M** is a high-current, low-profile power inductor typically used in DC-DC converter applications. It belongs to a class of surface-mount (SMD) power inductors designed for high-frequency power supplies. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's core specifications: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **LP** | Series Prefix | Low Profile / Power Inductor series. | | **5050** | Case Size | Dimensions approx. 5.0mm x 5.0mm. | | **R** | Construction | Often denotes RoHS compliance or specific core material. | | **R56** | Inductance Value | **0.56 µH** (R acts as a decimal point). | | **M** | Tolerance | **±20%** (Standard for power inductors). | --- ### 2. Key Technical Specifications While exact specs can vary slightly by manufacturer (e.g., Cyntec, Mag.Layers, or Bourns equivalents), the typical parameters for an R56 5050 inductor are: * **Inductance:** 0.56 µH * **DC Resistance (DCR):** Extremely low (typically 2mΩ to 10mΩ) to minimize power loss. * **Saturation Current (Isat):** The current level where inductance drops by ~30%. Usually ranges from **10A to 20A** for this size. * **Heating Current (Irms):** The current that causes a 40°C temperature rise. Usually high due to the flat-wire or molded construction. * **Operating Temperature:** Typically -40°C to +125°C. --- ### 3. Construction and Features * **Molded Structure:** Most "LP" style inductors use a metal alloy powder core molded around a copper coil. This provides excellent magnetic shielding and reduces acoustic noise (buzzing). * **Low Profile:** The "LP" designation signifies a height usually between 1.2mm and 3.0mm, making it ideal for thin electronic devices. * **High Efficiency:** Due to the low DCR, it is highly efficient in high-switching frequency environments (up to 5MHz). --- ### 4. Common Applications This component is vital in power management circuits where space is limited but current demand is high: 1. **Voltage Regulator Modules (VRM):** For CPUs and GPUs in laptops. 2. **DC-DC Converters:** Buck, Boost, or Buck-Boost topologies. 3. **Smartphones/Tablets:** Battery-powered devices requiring compact power stages. 4. **SSD Power Supplies:** Providing stable current to high-speed flash controllers. ---