規格
| 屬性 | 價值 |
| Package | Tube |
| Series | SIMPLE SWITCHER® |
| ProductStatus | Not For New Designs |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4V |
| Voltage-Input(Max) | 60V |
| Voltage-Output(Min/Fixed) | 1.23V |
| Voltage-Output(Max) | 57V |
| Current-Output | 3A |
| Frequency-Switching | 52kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Through Hole |
| Package/Case | TO-220-5 |
概述
Description
The LM2576HVT-ADJ is a high-efficiency switching voltage regulator designed for applications requiring a simple, efficient step-down (buck) conversion from a wide input voltage range. It is part of the LM2576 series of regulators produced by Texas Instruments, known for its ease of use and reliability. The "HVT" indicates that this model is suitable for high-voltage applications, supporting input voltages up to 60V. The "ADJ" suffix refers to its adjustable output feature, allowing users to set the output voltage using an external resistive divider.
Key features of the LM2576HVT-ADJ include a fixed switching frequency of 52 kHz, which minimizes noise and simplifies filtering, and an output current capability of up to 3A. It also offers built-in thermal shutdown, current limiting, and a high-efficiency operation, typically around 90%. These features make it ideal for a variety of DC-DC conversion tasks in industrial, automotive, and consumer electronics applications. Overall, the LM2576HVT-ADJ provides a robust and flexible solution for efficient power management.
Key features of the LM2576HVT-ADJ include a fixed switching frequency of 52 kHz, which minimizes noise and simplifies filtering, and an output current capability of up to 3A. It also offers built-in thermal shutdown, current limiting, and a high-efficiency operation, typically around 90%. These features make it ideal for a variety of DC-DC conversion tasks in industrial, automotive, and consumer electronics applications. Overall, the LM2576HVT-ADJ provides a robust and flexible solution for efficient power management.
Equivalent
Equivalent products to the LM2576HVT-ADJ, a step-down voltage regulator, include:
1. LM2596-ADJ by Texas Instruments
2. L4970A by STMicroelectronics
3. MC34063 by ON Semiconductor (for lower power applications)
4. L78S40 by STMicroelectronics
5. AP1509-50 by Diodes Incorporated
These alternatives offer similar functionalities, but always check the datasheet for compatibility with your specific requirements regarding input voltage, output current, and efficiency.
1. LM2596-ADJ by Texas Instruments
2. L4970A by STMicroelectronics
3. MC34063 by ON Semiconductor (for lower power applications)
4. L78S40 by STMicroelectronics
5. AP1509-50 by Diodes Incorporated
These alternatives offer similar functionalities, but always check the datasheet for compatibility with your specific requirements regarding input voltage, output current, and efficiency.
Features
The LM2576HVT-ADJ is a versatile step-down voltage regulator with the following key features:
1. Adjustable Output: The device provides an adjustable output voltage, allowing flexibility for different applications.
2. High Efficiency: It operates with high efficiency, typically around 77% to 80%, reducing power loss and heat generation.
3. Wide Input Voltage Range: The regulator supports a broad input voltage range, accommodating various power sources.
4. Output Current Capability: It can deliver up to 3A of continuous output current, suitable for powering medium-power applications.
5. Fixed Frequency Operation: The device operates at a fixed frequency of 52 kHz, facilitating predictable performance.
6. Thermal Shutdown and Current Limiting: Safety features include thermal shutdown and current limiting to protect against excessive loads and overheating.
7. Low Output Voltage Ripple: It provides a low output voltage ripple, contributing to stable and clean power delivery.
8. Simple Design: Minimal external components are required, simplifying the design and reducing cost.
9. Package Options: Available in TO-220 and TO-263 packages for ease of implementation in various applications.
These features make the LM2576HVT-ADJ suitable for a wide range of power supply applications.
1. Adjustable Output: The device provides an adjustable output voltage, allowing flexibility for different applications.
2. High Efficiency: It operates with high efficiency, typically around 77% to 80%, reducing power loss and heat generation.
3. Wide Input Voltage Range: The regulator supports a broad input voltage range, accommodating various power sources.
4. Output Current Capability: It can deliver up to 3A of continuous output current, suitable for powering medium-power applications.
5. Fixed Frequency Operation: The device operates at a fixed frequency of 52 kHz, facilitating predictable performance.
6. Thermal Shutdown and Current Limiting: Safety features include thermal shutdown and current limiting to protect against excessive loads and overheating.
7. Low Output Voltage Ripple: It provides a low output voltage ripple, contributing to stable and clean power delivery.
8. Simple Design: Minimal external components are required, simplifying the design and reducing cost.
9. Package Options: Available in TO-220 and TO-263 packages for ease of implementation in various applications.
These features make the LM2576HVT-ADJ suitable for a wide range of power supply applications.
Pinout
The LM2576HVT-ADJ is a high-voltage version of the LM2576 adjustable voltage regulator, specifically designed for step-down (buck) applications. It features a 5-pin package configuration. Here is a brief description of its pin functions:
1. Pin 1 (Vin): This is the input voltage pin. It accepts a wide range of input voltages, making the IC versatile for various applications.
2. Pin 2 (Output): This pin provides the regulated output voltage. It is connected to the output load and feedback for voltage regulation.
3. Pin 3 (Ground): This is the ground reference for the IC. It is common to both the input and output.
4. Pin 4 (Feedback): This pin is used to set the output voltage. It connects to a voltage divider that sets the desired output voltage level.
5. Pin 5 (ON/OFF): This pin is used to enable or disable the regulator. Connecting it to ground enables the IC, while a high-level signal disables the output.
The LM2576HVT-ADJ is commonly used for efficient voltage regulation in power supply applications, handling input voltages up to 60V.
1. Pin 1 (Vin): This is the input voltage pin. It accepts a wide range of input voltages, making the IC versatile for various applications.
2. Pin 2 (Output): This pin provides the regulated output voltage. It is connected to the output load and feedback for voltage regulation.
3. Pin 3 (Ground): This is the ground reference for the IC. It is common to both the input and output.
4. Pin 4 (Feedback): This pin is used to set the output voltage. It connects to a voltage divider that sets the desired output voltage level.
5. Pin 5 (ON/OFF): This pin is used to enable or disable the regulator. Connecting it to ground enables the IC, while a high-level signal disables the output.
The LM2576HVT-ADJ is commonly used for efficient voltage regulation in power supply applications, handling input voltages up to 60V.
Manufacturer
The LM2576HVT-ADJ is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company renowned for designing and manufacturing semiconductors and various integrated circuits. Their components are widely used in various electronic devices, including consumer electronics, automotive systems, industrial equipment, and more. TI is known for its innovation in analog and embedded processing technologies, and it provides a broad range of products that cater to different applications.
Application
The LM2576HVT-ADJ is a versatile adjustable voltage regulator used in various applications. Common areas include:
1. Power Supply Solutions: Ideal for step-down (buck) regulators in DC-DC converter configurations.
2. Battery Chargers: Used in systems requiring efficient voltage regulation.
3. Industrial Systems: Provides stable power in automated and control systems.
4. Consumer Electronics: Powers devices such as TVs, radios, and gaming consoles.
5. Distributed Power Systems: Utilized in point-of-load regulation.
6. Telecommunications: Offers reliable power conversion for networking equipment.
7. Automotive: Suitable for voltage regulation in power-sensitive automotive applications.
These applications benefit from its efficiency, adjustable output, and high voltage tolerance.
1. Power Supply Solutions: Ideal for step-down (buck) regulators in DC-DC converter configurations.
2. Battery Chargers: Used in systems requiring efficient voltage regulation.
3. Industrial Systems: Provides stable power in automated and control systems.
4. Consumer Electronics: Powers devices such as TVs, radios, and gaming consoles.
5. Distributed Power Systems: Utilized in point-of-load regulation.
6. Telecommunications: Offers reliable power conversion for networking equipment.
7. Automotive: Suitable for voltage regulation in power-sensitive automotive applications.
These applications benefit from its efficiency, adjustable output, and high voltage tolerance.
Package
The LM2576HVT-ADJ is a high-efficiency voltage regulator available in a TO-220 package. It is designed for easy implementation in adjustable output voltage configurations, providing a reliable solution for power management in various applications.
