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Name: LM2576T-5.0
Brand: Texas Instruments
SKU: LM2576T-5.0
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments LM2576T-5.0

Part No.:: LM2576T-5.0

Manufacturer:: Texas Instruments

Package:: TO-220-5

Datasheet:: LM2576T-5.0.pdf

Description:: IC REG BUCK 5V 3A TO220-5

In Stock:: 4231

Quantity:: Add To Cart

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LM2576T-5.0 Specifications

Packaging:
Tube
Series:
SIMPLE SWITCHER®
ProductStatus:
Not For New Designs
Function:
Step-Down
OutputConfiguration:
Positive
Topology:
Buck
OutputType:
Fixed
NumberofOutputs:
1
Voltage-Input(Min):
4V
Voltage-Input(Max):
40V
Voltage-Output(Min/Fixed):
5V
Voltage-Output(Max):
-
Current-Output:
3A
Frequency-Switching:
52kHz
SynchronousRectifier:
No
OperatingTemperature:
-40°C ~ 125°C (TJ)
MountingType:
Through Hole

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LM2576T-5.0 information

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LM2576T-5.0 Typical application Circuitry

LM2576T-5.0

The LM2576T-5.0 is a member of the LM2576 series of integrated circuits, specifically designed to deliver a fixed output voltage of 5.0V. This regulator is categorized under the Simple Switcher banner of monolithic integrated circuits, facilitating the design of high-efficiency power supplies with a minimal number of external components.

1. Pin Configuration:

- Pin 1 (Vin): This pin is linked to the input voltage supply. For the LM2576T-5.0 to operate effectively, the input voltage should typically be in the range of 7V to 40V to account for dropout voltage and ensure proper regulation.

- Pin 2 (Output): The regulated 5.0V output is sourced from this pin. An inductor connects from here to the load to facilitate the buck conversion process.

- Pin 3 (Ground): This pin is connected to the system ground, serving as a reference point for the operation of the LM2576T-5.0.

- Pin 4 (Feedback): Since the LM2576T-5.0 is designed for a fixed output, this pin is typically not used externally as the internal feedback is preset for 5.0V output.

- Pin 5 (On/Off): This pin is utilized to control the operational state of the LM2576T-5.0. This pin can be pushed high or low to switch on or off the regulator. For continuous operation, this pin can be directly tied to the Vin pin.

2. Essential External Components:

- Inductor (L): The inductor is a critical component and is selected based on the desired load current and switching frequency of the LM2576T-5.0. It joins the positive terminal of the load to the output (Pin 2).

- Catch Diode (D): A Schottky or fast-recovery diode is placed from the Output (Pin 2) to Vin (Pin 1), cathode to Pin 2, to carry the inductor current when the switch inside the LM2576T-5.0 is off.

- Input Capacitor (Cin): To stabilize the input voltage and reduce voltage spikes, a capacitor has to be attached in close proximity to the Vin (Pin 1).

- Output Capacitor (Cout): This capacitor is connected between the Output (Pin 2) and Ground (Pin 3) to ensure output voltage stability and reduce ripple.

3. Heat Management: The LM2576T-5.0, with its TO-220 package, may require heat sinking depending on the output current and voltage drop across the device, which affects the overall power dissipation.

The implementation of the LM2576T-5.0 in power supply designs is straightforward due to its built-in switching transistor, minimal external part requirement, and protection features like thermal shutdown and current limit. Careful attention to the layout-particularly in the placement of the inductor, diode, and capacitors relative to the LM2576T-5.0-can significantly influence the performance and reliability of the final application.

Designers choose the LM2576T-5.0 for its simplicity, efficiency, and proven performance in creating 5V rails in both industrial and consumer products. The robustness and ease of use of the LM2576T-5.0 make it a popular choice for a wide range of voltage regulation tasks.

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6. What is the process for return or replacement of LM2576T-5.0?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LM2576T-5.0.

(3)The PartNo is unused and only in the original unpacked packaging.

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