LM2596R-ADJ

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LM2596R-ADJ

+Nomenclature

IC REG BUCK ADJ 3A TO263-5L

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Spécifications

Attribut Valeur
Series SIMPLE SWITCHER®
PartStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 1.23V
Voltage-Output(Max) 37V
Current-Output 3A
Frequency-Switching 150kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
SupplierDevicePackage TO-263-5L

Présentation

Description

The LM2596R-ADJ is a popular voltage regulator IC designed for step-down (buck) conversion applications. It efficiently converts a higher input voltage to a lower output voltage with the aid of an external inductor and capacitors. The "ADJ" in its name signifies that the output voltage is adjustable, typically ranging from 1.23V to 37V, depending on the resistor divider network connected to its feedback pin.
This IC can handle input voltages up to 40V and deliver an output current of up to 3A, making it suitable for powering a variety of devices and circuits. The LM2596R-ADJ operates with a fixed switching frequency of 150 kHz, which helps in reducing the size of the external components and improving efficiency. It also features functionalities such as thermal shutdown, current limiting, and short-circuit protection to enhance reliability.
Common applications include powering microcontrollers, battery chargers, and other electronic devices that require stable, regulated power from varying input sources in both consumer and industrial products.

Equivalent

Equivalent products to the LM2596R-ADJ chip, which is a step-down voltage regulator, include:
1. MC34063: A versatile DC-DC converter IC.
2. MP1584: A compact buck converter capable of delivering up to 3A.
3. XL4015: A 5A step-down voltage regulator.
4. L7805: A linear voltage regulator for fixed output.
5. LM2576: A similar step-down voltage regulator with different specifications.
Check the specific current and voltage requirements to ensure compatibility.

Features

The LM2596R-ADJ is an adjustable voltage regulator designed for step-down (buck) applications. Key features include:
1. Adjustable Output Voltage: It can output a voltage range of 1.23V to 37V, depending on the external resistor divider configuration.
2. Output Current: It can deliver up to 3A of continuous output current, making it suitable for a wide range of applications.
3. Efficiency: The regulator is designed for high efficiency, typically around 90%, which helps in minimizing power loss and heat generation.
4. Switching Frequency: It operates at a fixed frequency of 150 kHz, aiding in reduced size of external components like inductors and capacitors.
5. Thermal Shutdown: The LM2596R-ADJ includes thermal shutdown capabilities to protect against overheating.
6. Current Limiting: It is equipped with current limiting to safeguard against excessive current conditions.
7. Low Standby Current: The device has a low standby current, enhancing power savings in idle conditions.
These features make the LM2596R-ADJ suitable for use in various applications like power supplies, LED drivers, and battery chargers.

Pinout

The LM2596R-ADJ is an adjustable voltage regulator with a 5-pin configuration. It is commonly used for step-down (buck) converter applications. Here is a brief overview of its pin functions:
1. VIN (Pin 1): This is the input pin where the unregulated input voltage is supplied. The typical input voltage range is 4.5V to 40V.
2. Output (Pin 2): This pin provides the regulated output voltage. The output voltage is adjustable through an external resistor divider.
3. Ground (Pin 3): This is the ground reference pin for the device, serving as the common ground for both the input and output.
4. Feedback (Pin 4): This pin is used to set the output voltage. It is connected to an external resistor divider network to provide feedback to the internal error amplifier.
5. ON/OFF (Pin 5): This is the shutdown pin. It can be used to turn the device on or off by applying a high or low signal, respectively.
The LM2596R-ADJ is popular due to its efficiency and ease of use in various applications like power supply circuits.

Manufacturer

The LM2596R-ADJ is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. The company is headquartered in Dallas, Texas, and is one of the largest semiconductor companies in the world. TI produces a wide range of products, including analog chips, digital signal processors, and microcontrollers, which are used in a variety of applications across different industries such as consumer electronics, automotive, industrial, and communication sectors. TI is known for its focus on innovation and has a strong emphasis on research and development to drive advancements in the electronic components industry.

Application

The LM2596R-ADJ is a versatile step-down voltage regulator and is commonly used in applications requiring efficient power conversion. Key application areas include:
1. Power Supplies: Used in designing efficient switching power supplies for electronic devices.
2. Battery Chargers: Suitable for designing chargers for lithium-ion and other rechargeable batteries.
3. LED Drivers: Employed in driving LEDs with regulated voltage and current.
4. Embedded Systems: Used in microcontroller-based systems for voltage regulation.
5. Consumer Electronics: Powers various consumer gadgets requiring stable power.
6. Industrial Automation: Provides regulated power in automated systems and machinery.
Its ability to deliver a stable output with high efficiency makes it ideal for numerous electronic applications.

Package

The LM2596R-ADJ is typically available in a TO-220 package, which is a common type of through-hole package used for power semiconductors. This package is designed to dissipate heat effectively and is often used for voltage regulators like the LM2596R-ADJ.

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