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LM1084IT-5.0 5A Low Dropout (LDO) Voltage Regulator (Fixed 5V - TO-220 Package)

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When you are driving power-hungry 5-Volt electronics such as large LED matrix displays, multiple servo motors, or a cluster of single-board computers standard regulators like the 7805 simply cannot handle the current, and older high-power regulators require massive input voltages just to turn on. The LM1084IT-5.0 bridges this gap beautifully. As a Low Dropout (LDO) regulator, it only needs your input voltage to be roughly 1.5 Volts higher than your 5-Volt output to maintain regulation, even when pushed to its absolute maximum current limit of 5 Amps.

This specific variant is factory-calibrated to deliver a rock-solid, fixed 5-Volt output, completely eliminating the need for complex external resistor networks. Housed in the heavy-duty TO-220 through-hole package, it is designed specifically for power distribution boards where large aluminum heatsinks can be easily bolted to its metal backing tab. Whether you are building a custom robotics power distribution system or regulating a high-capacity 7.4-Volt lithium polymer battery down to a safe 5 Volts, the LM1084 provides professional-grade power delivery.

Key Features & Functional Advantages

  • Massive 5 Amp Capacity: Capable of continuously supplying up to 5 Amps of current, making it five times more powerful than a standard 1-Amp regulator.

  • Low Dropout Operation: Only requires an input voltage roughly 1.5 Volts higher than the output to maintain a steady 5 Volts, making it highly efficient for stepping down 7-Volt or 9-Volt battery packs.

  • Fixed 5-Volt Output: Factory preset for accurate 5-Volt delivery, saving board space by removing the need for adjustment resistors.

  • Industrial Safety Features: Includes built-in thermal shutdown and current-limiting hardware to protect the chip from self-destruction in the event of an accidental short circuit or extreme overheating.

  • Heavy-Duty TO-220 Package: The rugged through-hole design makes it easy to mount on custom circuit boards and provides a large metal tab for attaching necessary cooling hardware.

Perfect For

  • Robotics and Drones: Providing a single, massive 5-Volt power rail to drive multiple high-torque servo motors or control boards from a main battery pack.

  • Large LED Displays: Supplying the heavy, steady current required to run long strips of 5-Volt addressable LEDs without voltage sag.

  • Single-Board Computers: Creating custom power supply modules to safely power multiple high-draw microcomputers simultaneously from a single 12-Volt power brick.

  • Battery Powered Systems: Getting the maximum possible run-time out of a battery pack before the voltage drops too low for the regulator to function.

Technical Specifications

  • Device Type: Low Dropout (LDO) Linear Voltage Regulator

  • Output Type: Fixed 5.0 Volts DC

  • Input Voltage Maximum: Up to 25.0 Volts DC

  • Maximum Output Current: 5.0 Amps

  • Voltage Drop-Out: Maximum 1.5 Volts at full 5-Amp load

  • Line Regulation: 0.015 percent typical

  • Load Regulation: 0.1 percent typical

  • Package Type: 3-Pin TO-220 (Vertical through-hole with metal heatsink tab)

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