The LM1084IT-5.0/NOPB is a high-performance linear voltage regulator manufactured by Texas Instruments (formerly Luminary Micro) that belongs to the Power Management Integrated Circuits (PMIC) category, specifically designed as a Low Drop Out (LDO) linear voltage regulator. This robust power management solution addresses critical design challenges in applications requiring stable, high-current 5V power supplies with minimal voltage dropout and excellent line regulation.
The regulator delivers a fixed 5V output voltage with an impressive 5A current capability, making it suitable for powering demanding electronic systems. Operating across a wide temperature range from -40°C to 125°C, the device accepts input voltages up to 25V while maintaining a low dropout voltage of just 1.5V at maximum load current, ensuring efficient power conversion even when input and output voltages are closely matched. The regulator features a single positive output configuration with a quiescent current of only 10mA, contributing to overall system efficiency.
Key performance specifications include excellent Power Supply Rejection Ratio (PSRR) of 68dB at 120Hz, which effectively suppresses input voltage ripple and noise, ensuring clean output power for sensitive analog and digital circuits. The device incorporates comprehensive protection features including over-current and over-temperature protection, safeguarding both the regulator and connected loads from fault conditions.
The LM1084IT-5.0/NOPB is housed in a standard TO-220-3 through-hole package, providing excellent thermal dissipation capabilities essential for high-current applications. This mounting configuration allows for easy heat sink attachment when thermal management is critical. The device is RoHS3 compliant, meeting current environmental regulations for lead-free manufacturing.
Primary advantages include exceptional load and line regulation, low noise output, fast transient response, and the ability to maintain regulation with minimal input-to-output voltage differential. The regulator's high current capability combined with low dropout characteristics makes it ideal for applications where input voltage may vary or where multiple high-current loads require stable 5V power.
The device finds extensive application in various electronic systems including computer peripherals, industrial control systems, automotive electronics, telecommunications equipment, test and measurement instruments, and embedded systems requiring reliable 5V power rails. It's particularly valuable in battery-powered applications where maximizing battery life through low dropout operation is crucial.
Equivalent and alternative models include the LM1084IT-ADJ/NOPB (adjustable output version of the same family), LM1085IT-5.0 (similar specifications with slightly different packaging options), LT1085CT-5 from Analog Devices (comparable 5A LDO regulator), LM338T (adjustable version with similar current capability), MC7805CT (lower current alternative), and LM2940CT-5.0 (lower current, automotive-grade alternative). Other compatible alternatives include the LM1084-5.0 in different package variants, SPX1085AT-L-5-0 from MaxLinear, and AMS1085CM-5.0 from Advanced Monolithic Systems, all offering similar functionality with varying thermal and electrical characteristics to suit different application requirements.
LM1084IT-5.0/NOPB Key Technical Attributes
Output Voltage: 5V
Output Current: 5A
Dropout Voltage (Max): 1.5V @ 5A
LM1084IT-5.0/NOPB Packing Size
The LM1084IT-5.0/NOPB is supplied in a TO-220-3 through-hole package, which is a standard and rugged type favored for power components due to its excellent heat dissipation characteristics. The material is typically a combination of a metal tab and a plastic body, supporting effective mounting and heat transfer. This model is provided in "tube" packaging for convenient handling and storage. The device includes three pins: input, output, and ground, making it straightforward to integrate on power supply boards. The robust TO-220 package also helps in managing the thermal load up to an operating junction temperature range of -40°C to 125°C, ensuring reliable long-term operation.
LM1084IT-5.0/NOPB Application
This linear voltage regulator is widely utilized in power management for industrial electronics, embedded systems, networking devices, and general-purpose circuits where a regulated 5V output is needed from a higher voltage supply. It is suitable for microprocessor power supplies, communication equipment, battery-powered devices, and consumer electronics, providing stable output necessary for sensitive circuitry.
LM1084IT-5.0/NOPB Features
The LM1084IT-5.0/NOPB delivers a fixed 5V output at a maximum current of 5A, offering a high level of current for many demanding electronic projects. Its maximum dropout voltage of 1.5V at 5A ensures efficient operation even when the supply voltage is only slightly higher than the output voltage, making it ideal for low-voltage applications. The device is engineered with a high power supply rejection ratio (PSRR) of 68dB at 120Hz, which helps minimize the effect of input voltage fluctuations and ripple on the output. It features both over-current and over-temperature protection, safeguarding connected circuits and ensuring the reliability of the system. An impressively low quiescent current of 10mA adds to its efficiency, making it suitable for energy-conscious designs. As a fixed positive voltage regulator in the LM1084 family, it supports easy implementation for single-rail designs.
LM1084IT-5.0/NOPB Quality and Safety Features
This component is ROHS3 compliant, meeting the latest environmental and safety regulations for hazardous materials. Its integrated protection mechanisms such as over-current and thermal shutdown protect both the regulator and connected circuitry from damage, enhancing system reliability in harsh or varying environmental conditions.
LM1084IT-5.0/NOPB Compatibility
Being a drop-in replacement for earlier LM1084 series regulators, the LM1084IT-5.0/NOPB maintains pinout and package compatibility with a wide range of applications currently using this industry-standard device. It integrates smoothly into existing designs using TO-220-3 packages, and its fixed 5V output meets most digital and analog electronic requirements, including logic circuits and microcontrollers.
LM1084IT-5.0/NOPB Datasheet PDF
Our website provides the most authoritative, manufacturer-verified datasheet for the LM1084IT-5.0/NOPB. We encourage customers to download this essential document directly from this page to obtain comprehensive technical details, typical application circuits, and performance graphs to facilitate your design and selection process.
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