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LM2576HVS-12
+NomenclatureIC REG BUCK 12V 3A TO263-5
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FabricantTexas Instruments
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Pièce fabricant #LM2576HVS-12
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Package TO-263-5
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En stock4630
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Spécifications
| Attribut | Valeur |
| Package | 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) | 60V |
| Voltage-Output(Min/Fixed) | 12V |
| Current-Output | 3A |
| Frequency-Switching | 52kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA |
Présentation
Description
The LM2576HVS-12 is a high-efficiency, step-down voltage regulator designed by Texas Instruments. It is specifically tailored for applications requiring reduced component count and minimal external components. With a fixed output voltage of 12V, the LM2576HVS-12 is capable of driving up to 3A of load current while maintaining excellent line and load regulation.
One of its key features is the wide input voltage range, from 4V to 60V, making it suitable for various power supply applications. The device's high-efficiency switching design reduces power dissipation, enabling compact and lightweight designs. Additionally, the LM2576HVS-12 offers built-in thermal shutdown, current limit protection, and an ON/OFF control function to enhance reliability and provide versatility in system design.
The regulator also supports a 52 kHz fixed-frequency oscillator, which reduces the size of the external components and simplifies the overall design. It is widely used in automotive, industrial, and consumer electronics where a stable 12V output is needed from a higher voltage source.
One of its key features is the wide input voltage range, from 4V to 60V, making it suitable for various power supply applications. The device's high-efficiency switching design reduces power dissipation, enabling compact and lightweight designs. Additionally, the LM2576HVS-12 offers built-in thermal shutdown, current limit protection, and an ON/OFF control function to enhance reliability and provide versatility in system design.
The regulator also supports a 52 kHz fixed-frequency oscillator, which reduces the size of the external components and simplifies the overall design. It is widely used in automotive, industrial, and consumer electronics where a stable 12V output is needed from a higher voltage source.
Equivalent
The LM2576HVS-12 is a high-voltage version of a simple switcher step-down voltage regulator. Equivalent products include:
1. LM2596-12: Another popular step-down voltage regulator by TI.
2. L4971: A 1.5A DC-DC step-down regulator by STMicroelectronics.
3. MC34063A: A versatile DC-DC converter, though with different specs.
4. L78S12: A linear voltage regulator, often used for similar applications but not a direct switch-mode equivalent.
Always verify specific requirements and characteristics for compatibility.
1. LM2596-12: Another popular step-down voltage regulator by TI.
2. L4971: A 1.5A DC-DC step-down regulator by STMicroelectronics.
3. MC34063A: A versatile DC-DC converter, though with different specs.
4. L78S12: A linear voltage regulator, often used for similar applications but not a direct switch-mode equivalent.
Always verify specific requirements and characteristics for compatibility.
Features
The LM2576HVS-12 is a high-voltage version of the LM2576 series of step-down (buck) voltage regulators. Key features include:
1. Output Voltage: Fixed output voltage of 12V.
2. Input Voltage Range: Capable of handling input voltages from 7V to 60V.
3. Output Current: Delivers up to 3A of output current.
4. Efficiency: High efficiency, typically up to 88%, due to a built-in switch.
5. Switching Frequency: Fixed frequency of 52 kHz.
6. Low Quiescent Current: Designed for low power consumption during idle states.
7. Thermal Shutdown: Built-in protection against overheating.
8. Current Limit: Provides protection against over-current conditions.
9. Output Voltage Tolerance: Generally within ±4% over line, load, and temperature variations.
10. Simplified Design: Requires a minimal number of external components.
11. Package Options: Available in TO-220 and TO-263 packages for different mounting needs.
These features make the LM2576HVS-12 an ideal choice for efficient power management in various high-voltage applications.
1. Output Voltage: Fixed output voltage of 12V.
2. Input Voltage Range: Capable of handling input voltages from 7V to 60V.
3. Output Current: Delivers up to 3A of output current.
4. Efficiency: High efficiency, typically up to 88%, due to a built-in switch.
5. Switching Frequency: Fixed frequency of 52 kHz.
6. Low Quiescent Current: Designed for low power consumption during idle states.
7. Thermal Shutdown: Built-in protection against overheating.
8. Current Limit: Provides protection against over-current conditions.
9. Output Voltage Tolerance: Generally within ±4% over line, load, and temperature variations.
10. Simplified Design: Requires a minimal number of external components.
11. Package Options: Available in TO-220 and TO-263 packages for different mounting needs.
These features make the LM2576HVS-12 an ideal choice for efficient power management in various high-voltage applications.
Pinout
The LM2576HVS-12 is a step-down voltage regulator designed for high-efficiency power conversion. It has a total of 5 pins, each with specific functions:
1. VIN (Pin 1): This is the input pin where the unregulated voltage is supplied to the regulator.
2. Output (Pin 2): This pin provides the regulated output voltage. For the LM2576HVS-12, this is set to 12 volts.
3. Ground (Pin 3): This is the common ground pin for input and output voltages.
4. Feedback (Pin 4): This pin is used to monitor the output voltage. It helps maintain output voltage regulation by comparing it to an internal reference.
5. ON/OFF (Pin 5): This pin is used to enable or disable the regulator. Pulling it low turns the regulator off, while pulling it high or leaving it floating turns the regulator on.
The LM2576HVS-12 is capable of driving a 3A load with excellent line and load regulation and is suitable for a wide range of applications due to its high efficiency and ease of use.
1. VIN (Pin 1): This is the input pin where the unregulated voltage is supplied to the regulator.
2. Output (Pin 2): This pin provides the regulated output voltage. For the LM2576HVS-12, this is set to 12 volts.
3. Ground (Pin 3): This is the common ground pin for input and output voltages.
4. Feedback (Pin 4): This pin is used to monitor the output voltage. It helps maintain output voltage regulation by comparing it to an internal reference.
5. ON/OFF (Pin 5): This pin is used to enable or disable the regulator. Pulling it low turns the regulator off, while pulling it high or leaving it floating turns the regulator on.
The LM2576HVS-12 is capable of driving a 3A load with excellent line and load regulation and is suitable for a wide range of applications due to its high efficiency and ease of use.
Manufacturer
The LM2576HVS-12 is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company based in Dallas, Texas, known for designing and manufacturing a wide range of semiconductor devices, including integrated circuits and embedded processors. TI serves various industries, including automotive, industrial, consumer electronics, and communications. The company is recognized for its innovation in analog and embedded processing technologies and has a strong presence in the electronics market.
Application
The LM2576HVS-12 is a high-voltage step-down (buck) voltage regulator. Key application areas include:
1. Industrial Power Supplies: Used in systems requiring regulated output for consistent performance.
2. Battery-Powered Devices: Efficient DC-DC conversion extends battery life.
3. Telecommunication Equipment: Provides reliable power for various communication devices.
4. Automotive Electronics: Supplies stable power in vehicle systems.
5. Consumer Electronics: Powers devices like set-top boxes and home appliances.
6. Distributed Power Systems: Helps manage power distribution with high efficiency.
7. Embedded Systems: Offers a compact solution for powering microcontrollers and peripherals.
These applications benefit from its efficiency, reliability, and ability to handle high input voltages.
1. Industrial Power Supplies: Used in systems requiring regulated output for consistent performance.
2. Battery-Powered Devices: Efficient DC-DC conversion extends battery life.
3. Telecommunication Equipment: Provides reliable power for various communication devices.
4. Automotive Electronics: Supplies stable power in vehicle systems.
5. Consumer Electronics: Powers devices like set-top boxes and home appliances.
6. Distributed Power Systems: Helps manage power distribution with high efficiency.
7. Embedded Systems: Offers a compact solution for powering microcontrollers and peripherals.
These applications benefit from its efficiency, reliability, and ability to handle high input voltages.
Package
The LM2576HVS-12 is a high-voltage version of the LM2576, a step-down voltage regulator. It typically comes in a TO-220 package, which is a widely used form factor for power components, known for its ability to handle relatively high power while providing good thermal performance.
