| Allicdata Part #: | LM2576HVT-ADJ/LB03-ND |
| Manufacturer Part#: |
LM2576HVT-ADJ/LB03 |
| Price: | $ 4.84 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC REG BUCK ADJ 3A TO220-5 |
| More Detail: | Buck Switching Regulator IC Positive Adjustable 1.... |
| DataSheet: |  LM2576HVT-ADJ/LB03 Datasheet/PDF |
| Quantity: | 501 |
| 1 +: | $ 4.40370 |
| 10 +: | $ 3.97530 |
| 100 +: | $ 3.29131 |
| 500 +: | $ 2.86603 |
| 1000 +: | $ 2.49622 |
Specifications
| Voltage - Output (Min/Fixed): | 1.23V |
| Base Part Number: | LM2576 |
| Supplier Device Package: | TO-220-5 |
| Package / Case: | TO-220-5 Formed Leads |
| Mounting Type: | Through Hole |
| Operating Temperature: | -40°C ~ 125°C (TJ) |
| Synchronous Rectifier: | No |
| Frequency - Switching: | 52kHz |
| Current - Output: | 3A |
| Voltage - Output (Max): | 57V |
| Series: | SIMPLE SWITCHER® |
| Voltage - Input (Max): | 60V |
| Voltage - Input (Min): | 4V |
| Number of Outputs: | 1 |
| Output Type: | Adjustable |
| Topology: | Buck |
| Output Configuration: | Positive |
| Function: | Step-Down |
| Part Status: | Not For New Designs |
| Packaging: | Tube |
Description
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Introduction
The LM2576HVT-ADJ/LB03 is a popular integrated switching regulator IC from Texas Instruments. It is designed to be used in a variety of applications, including telecommunications, computing, automotive electronics, and consumer electronics. It is a DC-DC switching regulator, which means it converts a direct current to a regulated direct current for a given output voltage. In addition, it provides adjustable output voltage, as well as many protection and diagnostic features.Applications
The LM2576HVT-ADJ/LB03 can be used in a variety of different applications, including the following:- Switch-mode power supplies, programmable voltage references, and dc-to-dc converters for portable electronics.
- Portable instrumentation and industrial equipment.
- Cellular phones and laptops.
- Digital cameras and camcorders.
- Automotive electronics, such as electric power steering systems and electronic control units.
- Lighting systems.
Components
The LM2576HVT-ADJ/LB03 is made up of four main components: a control unit, an integrated resistor, a voltage reference, and a current feedback amplifier. The control unit contains several components that are necessary for proper operation of the device. These components include a power MOSFET, an error amplifier, a driver circuit, and a protection circuit. The integrated resistor is used to set the reference voltage for the output. The voltage reference is used for both the output voltage and the feedback voltage. The current feedback amplifier is used to sense the output current and compare it with the set reference voltage.Working Principle
The main working principle of the LM2576HVT-ADJ/LB03 is that it takes a direct current input and outputs a regulated direct current. This is achieved by using the power MOSFET to switch the current, while the error amplifier compares the output voltage with the reference voltage. If the output voltage is too low, the error amplifier increases the duty cycle of the switching MOSFET, increasing the amount of power being delivered to the circuit. Conversely, if the output voltage is too high, the error amplifier decreases the duty cycle, reducing the amount of power being delivered. The current feedback amplifier monitors the output current and provides over-current protection.Conclusion
The LM2576HVT-ADJ/LB03 is a popular integrated switching regulator IC from Texas Instruments. It is designed to be used in a variety of applications, from consumer electronics to industrial equipment. It can output a regulated direct current from an input direct current and also has adjustable output voltage. It is composed of four main components: a control unit, an integrated resistor, a voltage reference, and a current feedback amplifier. The working principle of this device is that it uses the power MOSFET to switch the current, while the error amplifier and current feedback amplifier monitor the output voltage and current, respectively.The specific data is subject to PDF, and the above content is for reference
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