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LM2574MX-5.0
+Lista de MateriaisIC REG BUCK 5V 500MA 14SOIC
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FabricanteTexas Instruments
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Peça do Fabricante #LM2574MX-5.0
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Ficha Técnica LM2574MX-5.0 DataSheet
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Pacote SOIC-14
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Especificações
| Atributo | Valor |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| 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 | 500mA |
| Frequency-Switching | 52kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 14-SOIC (0.295, 7.50mm Width) |
Visão Geral
Description
Key features include a wide input voltage range (up to 40V), a fixed 5V output, and a high efficiency of around 80-90% depending on the load and input voltage. The LM2574MX-5.0 operates at a fixed frequency of 52 kHz, which minimizes external component sizes and reduces electromagnetic interference (EMI). It also incorporates various safety features such as thermal shutdown and current limiting, enhancing its reliability.
The LM2574MX-5.0 is commonly used in battery-powered devices, automotive applications, and other scenarios where efficient voltage regulation is crucial. Its compact form factor and simple external component requirements make it a popular choice for engineers needing a straightforward solution for power management.
Equivalent
1. LM2575-5.0: Similar function, slightly higher output current capability.
2. MC34063A: Offers adjustable output, requires more external components.
3. L78S05: Fixed 5V regulator, less efficient, simpler design.
4. L7805: Widely used 5V regulator, less efficient, dissipates more heat.
5. XL1509-5.0: Higher efficiency and compact footprint alternative.
Ensure compatibility with your specific design requirements when selecting an alternative.
Features
1. Fixed Output Voltage: The device outputs a stable 5.0V.
2. Wide Input Voltage Range: It can handle input voltages from 4.75V to 40V.
3. Output Current: Capable of delivering up to 0.5A of output current.
4. Efficiency: High efficiency due to switching regulation, as opposed to linear regulation.
5. Internal Frequency Compensation: This simplifies the design process.
6. Short-Circuit Protection: Offers protection against output short circuits.
7. Thermal Shutdown: Automatically disables the device if the internal temperature exceeds safe operating limits.
8. Available in Surface-Mount Package: The MX suffix indicates a surface-mount package for high-density applications.
These features make the LM2574MX-5.0 suitable for a variety of applications, including automotive, industrial, and consumer electronics, where efficient, compact, and reliable DC-DC conversion is required.
Pinout
1. Vin (Pin 1): Input voltage pin where the input power supply is connected.
2. Ground (Pin 2): Ground reference for the device.
3. Vout (Pin 3): Output voltage pin where the regulated 5.0V output is provided.
4. Feedback (Pin 4): Used to maintain the output voltage regulation. For fixed output versions like the LM2574MX-5.0, this pin is internally connected.
5. ON/OFF (Pin 5): Enables or disables the regulator. A high level or open circuit enables the device, while a low level turns it off.
6. Comparator Overdrive (Pin 6): Used for internal comparator, typically not used by the user.
7. Sync (Pin 7): Synchronizes the internal oscillator with an external clock, typically not used.
8. Switch (Pin 8): Collector of the internal NPN power switch.
These pins work together to control the conversion of higher input voltage to a stable 5.0V output, making the LM2574MX-5.0 suitable for various applications requiring a reliable power supply.
Manufacturer
Application
1. Power Supply Design: Used in designing efficient power supply circuits for electronic devices.
2. Embedded Systems: Provides stable 5V supply for microcontrollers and microprocessors.
3. Battery-Powered Devices: Helps in efficient power conversion to extend battery life.
4. Consumer Electronics: Utilized in devices such as televisions, radios, and audio equipment.
5. Industrial Automation: Powers sensors and control units in industrial environments.
6. Automotive Applications: Used in in-car chargers and infotainment systems.
7. Communication Equipment: Supplies power to networking and communication devices.
These applications leverage its capability to convert higher input voltages to a stable 5V output efficiently.