LM2596S-ADJ

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LM2596S-ADJ

IC REG BUCK ADJ 3A TO263-5

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  • 包 TO-263-5
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規格

Package Tube
Series SIMPLE SWITCHER®
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 4.5V
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 1.2V
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

概述

Description

The LM2596S-ADJ is a popular step-down (buck) voltage regulator integrated circuit designed to efficiently convert a higher input voltage to a lower output voltage. This adjustable version of the LM2596 series allows users to set the output voltage to a desired level using external resistors. It is capable of delivering up to 3A of load current. The device operates at a switching frequency of 150 kHz, which allows for smaller external components and a compact design.
Key features of the LM2596S-ADJ include a wide input voltage range from 4.5V to 40V, thermal shutdown, current limit protection, and low standby current. Its high efficiency, typically over 80%, makes it suitable for various applications such as power management in consumer electronics, industrial devices, and distributed power systems. The regulator comes in a standard TO-263 (SMD) package, making it easy to mount on PCBs. Its simplicity, reliability, and cost-effectiveness make the LM2596S-ADJ a popular choice for DC-DC conversion needs.

Features

The LM2596S-ADJ is a versatile step-down (buck) voltage regulator designed for efficient power management. Key features include:
1. Adjustable Output Voltage: The device supports an adjustable output voltage range, allowing users to set the desired level using external resistors.
2. Wide Input Voltage Range: It operates with input voltages between 4.5V and 40V, making it suitable for a variety of applications.
3. High Efficiency: The regulator offers efficiency up to 90%, which reduces power loss and heat dissipation.
4. Output Current Capability: It can deliver up to 3A of continuous output current with adequate heat management.
5. Internal Frequency Compensation: This feature simplifies the design process by reducing the need for external components.
6. Fixed Internal Switching Frequency: The LM2596S-ADJ typically operates at a 150 kHz fixed switching frequency, optimizing performance and component size.
7. Thermal Shutdown and Current Limiting: These protections enhance reliability by preventing damage due to overheating or overcurrent conditions.
8. Low Component Count: Its design allows for a minimal number of external components, which helps in reducing overall system cost and board space.
These features make the LM2596S-ADJ a popular choice for applications requiring efficient voltage regulation from a higher voltage source.

Package

The LM2596S-ADJ is a voltage regulator in a TO-263 package, which is a surface-mount technology (SMT) package. This package allows for efficient heat dissipation and is commonly used in applications where space is limited.

Pinout

The LM2596S-ADJ is a popular step-down voltage regulator integrated circuit. It comes in a 5-pin TO-263 surface-mount package. The pin functions are as follows:
1. Vin (Input Voltage): This is the input pin where the unregulated DC voltage is applied. The LM2596S-ADJ can accept input voltages typically ranging from 4.5V to 40V.
2. Output (Vout): This pin provides the regulated output voltage. The output can be adjusted to a desired level using an external resistor divider network.
3. Ground (GND): This pin is connected to the system ground.
4. Feedback (FB): This pin is used to set the output voltage through an external resistor divider network. The voltage at this pin is compared to a 1.23V reference voltage to regulate the output.
5. ON/OFF: This pin allows the regulator to be turned on or off. A logic high level on this pin enables the regulator, while a logic low level disables it.
The LM2596S-ADJ is widely used for efficient voltage conversion in various electronic applications.

Manufacturer

The LM2596S-ADJ is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is an American technology company headquartered in Dallas, Texas. It is one of the top semiconductor companies globally and is known for designing and manufacturing analog and embedded processing chips. TI's products are widely used in various applications, including automotive, industrial, personal electronics, and communications equipment. The company has a significant focus on research and development, which supports its leadership in the semiconductor industry.

Application

The LM2596S-ADJ is a versatile DC-DC buck converter used in applications requiring efficient voltage regulation. Typical application areas include power supply units for consumer electronics, battery-operated devices, and distributed power systems. It's also employed in automotive electronics, industrial controls, and communication equipment, where space and power efficiency are crucial. Its adjustable output voltage makes it suitable for customized power solutions in a wide range of devices and systems.

Equivalent

The LM2596S-ADJ is a step-down (buck) voltage regulator. Equivalent products include:
1. LM2576-ADJ
2. XL4015
3. MP1584
4. L7805CV (for specific fixed outputs)
5. LM2678-ADJ
6. AMS1117 (for low power applications)
These alternatives vary by current output, efficiency, and additional features, so ensure compatibility with your specific requirements.

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