Спецификации
| Атрибут | Ценность |
| 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) | 40V |
| Voltage-Output(Min/Fixed) | 5V |
| Current-Output | 1A |
| 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 |
Обзор
Description
The LM2575S-5.0 is a fixed-output, step-down (buck) voltage regulator from Texas Instruments, designed to efficiently convert a higher input voltage to a stable 5V output. It is part of the LM2575 series, known for its simplicity and ease of use. Operating with a switching frequency of 52 kHz, the device provides efficiencies up to 88%, making it suitable for battery-powered applications and power-efficient designs.
Key features include a wide input voltage range (7V to 40V), a fixed 5V output, low standby current, and an ability to supply up to 1A of continuous output current. Its robust design includes features like thermal shutdown, current limit protection, and a guaranteed ±4% tolerance over the full input voltage, load current, and temperature range. The LM2575S-5.0 also requires a minimal number of external components, typically a diode, an inductor, and capacitors, simplifying the design process. This regulator is ideal for applications like industrial automation, automotive systems, and other consumer electronics requiring a reliable 5V power source.
Key features include a wide input voltage range (7V to 40V), a fixed 5V output, low standby current, and an ability to supply up to 1A of continuous output current. Its robust design includes features like thermal shutdown, current limit protection, and a guaranteed ±4% tolerance over the full input voltage, load current, and temperature range. The LM2575S-5.0 also requires a minimal number of external components, typically a diode, an inductor, and capacitors, simplifying the design process. This regulator is ideal for applications like industrial automation, automotive systems, and other consumer electronics requiring a reliable 5V power source.
Equivalent
The LM2575S-5.0 is a step-down (buck) voltage regulator. Equivalent products include:
1. LM2595-5.0: Similar function with higher output current capacity.
2. LM2675-5.0: Higher frequency and smaller package options.
3. MC34063: Less efficient but widely used for basic applications.
4. L4970A Offers a similar function with different specs.
5. XL4015: Cost-effective alternative with a similar output voltage.
Always ensure compatibility in terms of specifications such as voltage, current, and thermal characteristics.
1. LM2595-5.0: Similar function with higher output current capacity.
2. LM2675-5.0: Higher frequency and smaller package options.
3. MC34063: Less efficient but widely used for basic applications.
4. L4970A Offers a similar function with different specs.
5. XL4015: Cost-effective alternative with a similar output voltage.
Always ensure compatibility in terms of specifications such as voltage, current, and thermal characteristics.
Features
The LM2575S-5.0 is a step-down voltage regulator designed for simplicity and efficiency in power supply applications. Key features include:
1. Fixed Output Voltage: Provides a constant 5V output.
2. Wide Input Voltage Range: Operates from 4V to 40V input.
3. Efficiency: High efficiency up to approximately 88%, reducing power loss.
4. Output Current: Capable of delivering up to 1A of continuous output current.
5. Switching Frequency: Fixed frequency of 52 kHz for predictable operation.
6. Thermal Shutdown: Protection against overheating.
7. Current Limit Protection: Prevents damage from overcurrent conditions.
8. Simple Design: Requires minimal external components, simplifying the circuit.
9. Built-in Features: Includes features like a fixed internal frequency oscillator and a current-mode control loop.
10. Versatile Package Options: Available in a 5-pin TO-263 SMD package, suitable for space-constrained applications.
These features make the LM2575S-5.0 ideal for battery-powered devices, embedded systems, and other applications requiring a reliable and efficient 5V power supply.
1. Fixed Output Voltage: Provides a constant 5V output.
2. Wide Input Voltage Range: Operates from 4V to 40V input.
3. Efficiency: High efficiency up to approximately 88%, reducing power loss.
4. Output Current: Capable of delivering up to 1A of continuous output current.
5. Switching Frequency: Fixed frequency of 52 kHz for predictable operation.
6. Thermal Shutdown: Protection against overheating.
7. Current Limit Protection: Prevents damage from overcurrent conditions.
8. Simple Design: Requires minimal external components, simplifying the circuit.
9. Built-in Features: Includes features like a fixed internal frequency oscillator and a current-mode control loop.
10. Versatile Package Options: Available in a 5-pin TO-263 SMD package, suitable for space-constrained applications.
These features make the LM2575S-5.0 ideal for battery-powered devices, embedded systems, and other applications requiring a reliable and efficient 5V power supply.
Pinout
The LM2575S-5.0 is a step-down voltage regulator that provides a fixed output voltage of 5.0V. It comes in a 5-pin package. Here is a brief description of its pin functions:
1. Vin (Pin 1): This is the input pin where the DC voltage is supplied to the regulator.
2. Output (Pin 2): This pin provides the regulated output voltage of 5.0V.
3. Ground (Pin 3): This is the ground reference pin for the device and is connected to the ground of the circuit.
4. Feedback (Pin 4): This pin is used for output voltage regulation. In the fixed version like the LM2575S-5.0, it is internally connected, and no external feedback components are needed.
5. ON/OFF (Pin 5): This pin allows the device to be turned on or off. Pulling the pin low turns off the regulator, while leaving it open or pulling it high turns it on.
The LM2575S-5.0 is commonly used for power supply applications requiring efficient and reliable voltage regulation.
1. Vin (Pin 1): This is the input pin where the DC voltage is supplied to the regulator.
2. Output (Pin 2): This pin provides the regulated output voltage of 5.0V.
3. Ground (Pin 3): This is the ground reference pin for the device and is connected to the ground of the circuit.
4. Feedback (Pin 4): This pin is used for output voltage regulation. In the fixed version like the LM2575S-5.0, it is internally connected, and no external feedback components are needed.
5. ON/OFF (Pin 5): This pin allows the device to be turned on or off. Pulling the pin low turns off the regulator, while leaving it open or pulling it high turns it on.
The LM2575S-5.0 is commonly used for power supply applications requiring efficient and reliable voltage regulation.
Manufacturer
The LM2575S-5.0 is manufactured by Texas Instruments. Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits. It is known for its innovation in the field of analog and embedded processing, which are used in a wide range of electronics applications. The company serves industries such as automotive, industrial, personal electronics, and communications. Texas Instruments is headquartered in Dallas, Texas, and is highly regarded for its research and development capabilities, focusing on providing solutions that enhance efficiency and performance.
Application
The LM2575S-5.0 is a step-down voltage regulator used in various applications requiring efficient power conversion from higher to lower DC voltages. Key application areas include:
1. Embedded Systems: It provides stable 5V power supply for microcontrollers and other digital components.
2. Consumer Electronics: Used in devices like set-top boxes and gaming consoles for efficient power management.
3. Industrial Automation: Powers sensors and control devices requiring a steady 5V output.
4. Telecommunications: Supplies regulated power to communication devices and modules.
5. Automotive: Powers electronic systems in vehicles, such as infotainment and control units.
The LM2575S-5.0's efficiency makes it suitable for battery-powered applications where minimizing energy loss is crucial.
1. Embedded Systems: It provides stable 5V power supply for microcontrollers and other digital components.
2. Consumer Electronics: Used in devices like set-top boxes and gaming consoles for efficient power management.
3. Industrial Automation: Powers sensors and control devices requiring a steady 5V output.
4. Telecommunications: Supplies regulated power to communication devices and modules.
5. Automotive: Powers electronic systems in vehicles, such as infotainment and control units.
The LM2575S-5.0's efficiency makes it suitable for battery-powered applications where minimizing energy loss is crucial.
Package
The LM2575S-5.0 is a voltage regulator in a TO-263 (D2PAK) package. This package type is designed for surface-mount applications and provides efficient heat dissipation due to its exposed pad, making it suitable for power management tasks requiring a stable 5V output.
