LM2596S-12

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LM2596S-12

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IC REG BUCK 12V 3A TO263-5

  • FabricanteTexas Instruments

  • Peça do Fabricante #LM2596S-12

  • Pacote TO-263-5

  • Em Estoque3481

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Especificações

Atributo Valor
Package Tube
Series SIMPLE SWITCHER®
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Fixed
NumberofOutputs 1
Voltage-Input(Min) 4.5V
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 12V
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

Visão Geral

Description

The LM2596S-12 is a popular DC-DC step-down (buck) voltage regulator from Texas Instruments. It is designed to provide a stable 12V output from a higher input voltage source, typically ranging from 4.5V to 40V. This regulator is part of the LM2596 series, known for high efficiency, ease of use, and reliable performance in power supply applications.
Key features of the LM2596S-12 include a fixed output voltage of 12V, a switching frequency of 150 kHz, and an output current capability of up to 3A. It also integrates essential functions like thermal shutdown, current limiting, and a soft-start to prevent high inrush currents.
The device requires minimal external components, making it easy to design with, and is suitable for a wide range of applications such as battery chargers, LED drivers, and power supplies for embedded systems. The LM2596S-12 comes in a TO-263 package, which helps in effective heat dissipation, further enhancing its performance in compact designs.

Equivalent

The LM2596S-12, a step-down (buck) voltage regulator, has several equivalent products. These include the L4970A, L4973V12, LM2576-12, LMR33630, and NCP3063. When selecting an equivalent, ensure that the replacement has similar specifications such as input voltage range, output current, efficiency, and package type. Always consult the datasheets to confirm compatibility with your specific application requirements.

Features

The LM2596S-12 is a step-down voltage regulator from the LM2596 series, specifically designed to provide a fixed output voltage of 12V. Key features include:
1. Input Voltage Range: It supports a wide input voltage range of 4.5V to 40V, making it versatile for various applications.
2. Output Current: The regulator can deliver an output current up to 3A, suitable for powering moderate loads.
3. Efficiency: It boasts high efficiency up to 90%, which reduces heat generation and improves performance.
4. Switching Frequency: Operates at a fixed switching frequency of 150 kHz, allowing for smaller external components compared to low-frequency regulators.
5. Thermal Shutdown: Includes thermal shutdown capability to protect the device from overheating.
6. Short-Circuit Protection: Features current-limiting and short-circuit protection to enhance reliability.
7. Package: Available in a TO-220 or TO-263 package, which provides convenient mounting options and good thermal dissipation.
These features make the LM2596S-12 suitable for applications requiring efficient power conversion and stable 12V output.

Pinout

The LM2596S-12 is a voltage regulator with a 5-pin package designed for step-down (buck) conversion. Its primary function is to provide a regulated 12V output from a higher input voltage. Here is a brief overview of its pins and functions:
1. Pin 1 - Input (Vin): This is the input pin where the unregulated higher input voltage is supplied. The pin accepts voltages typically ranging from about 4.5V to 40V.
2. Pin 2 - Output (Vout): This is the output pin which provides the regulated 12V. It delivers the step-down voltage to the load.
3. Pin 3 - Ground (GND): This pin is connected to the ground of the circuit and serves as a reference point for the input and output voltages.
4. Pin 4 - Feedback (FB): This pin is used for setting the output voltage by connecting it to a voltage divider network from the output.
5. Pin 5 - ON/OFF Control (Enable): This pin is used to enable or disable the device. When connected to a low logic level, it turns off the regulator, and when high, it enables the output.
This IC is commonly used in applications where efficient voltage regulation is necessary.

Manufacturer

The LM2596S-12 is a voltage regulator manufactured by Texas Instruments, a major American technology company. Texas Instruments is known for designing and manufacturing semiconductors and integrated circuits widely used in electronics. They cater to a diverse range of industries, including automotive, industrial, consumer electronics, and communications equipment. The LM2596S-12 is part of their portfolio of power management devices, specifically a step-down (buck) voltage regulator with a fixed output of 12 volts, used for efficient power conversion in various electronic applications.

Application

The LM2596S-12 is a step-down voltage regulator commonly used in various applications. Its primary application areas include:
1. Power Supply Designs: Used in DC-DC converter circuits to step down voltage efficiently.
2. Embedded Systems: Provides stable power to microcontrollers and digital circuits.
3. Industrial Automation: Supplies power to sensors and control units.
4. Consumer Electronics: Powers devices like chargers, LED drivers, and portable equipment.
5. Telecommunications: Used in power management systems for communication devices.
6. Automotive: Regulates power in automotive electronic systems.
Its versatility makes it suitable for any application requiring efficient voltage regulation with a 12V output.

Package

The LM2596S-12 is a step-down voltage regulator with a TO-263 surface-mount package. This package type allows for efficient thermal dissipation and is suitable for applications requiring a compact form factor.

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