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LM2576SX-3.3
+Lista de MateriaisIC REG BUCK 3.3V 3A TO263-5
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FabricanteTexas Instruments
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Peça do Fabricante #LM2576SX-3.3
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Pacote DDPAK-6
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Em Estoque2570
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Especificações
| Atributo | Valor |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Current - Output | 3A |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Visão Geral
Description
Key features include high efficiency, typically up to 80-90%, and a wide input voltage range from 4V to 40V, making it suitable for various applications. It also incorporates features such as thermal shutdown, current limiting, and output short circuit protection, which enhance reliability and safety.
The LM2576SX-3.3 is commonly used in power management applications where efficient step-down conversion and regulated output are required, such as in battery-powered devices, industrial equipment, and consumer electronics. Its TO-263 surface-mount packaging facilitates ease of use in PCB design.
Equivalent
1. L4973V3.3 from STMicroelectronics
2. MC34063A with additional components for the same output
3. LM2596-3.3 by Texas Instruments
4. XL4015 for similar applications
5. MP1584 buck converter module
These components serve a similar function, but ensure to check specifications for compatibility with your specific requirements.
Features
1. Output Voltage: Fixed 3.3V.
2. Output Current: Capable of delivering up to 3A.
3. Efficiency: High efficiency up to 90%, reducing thermal concerns.
4. Input Voltage Range: Operates from 4V to 40V.
5. Switching Frequency: Fixed frequency of 52 kHz.
6. Integrated Switch: Contains an internal NPN switch, simplifying design.
7. Thermal Shutdown: Protects against overheating.
8. Current Limiting: Prevents damage due to overcurrent conditions.
9. Low Standby Current: Optimizes power consumption in idle mode.
10. Minimum External Components: Simplifies design with fewer components needed.
11. Various Package Options: Available in TO-220, TO-263, and TO-263 THIN packages.
These features make the LM2576SX-3.3 suitable for a wide range of applications, including power supplies for industrial, consumer electronics, and battery-operated devices.
Pinout
1. Input (Pin 1): Supplies the input voltage to the regulator. The input voltage should be higher than the desired output voltage.
2. Output (Pin 2): Provides the regulated 3.3V output voltage. This pin is connected to the load.
3. Ground (Pin 3): Common ground for both input and output. It serves as the reference point for all voltages.
4. Feedback (Pin 4): Used to set the output voltage by connecting to the output voltage node. It helps maintain the voltage regulation.
5. ON/OFF (Pin 5): An enable pin that allows the device to be turned on or off. Pulling this pin low shuts down the regulator to reduce power consumption.
The LM2576SX-3.3 is designed for efficiency and ease of use in applications requiring a 3.3V supply, supporting a current up to 3A.
Manufacturer
Application
1. Consumer Electronics: Used in devices like televisions, DVD players, and gaming consoles for stable power supply.
2. Industrial Equipment: Powers sensors and control modules requiring a 3.3V supply.
3. Computing: Provides regulated power in computer peripherals and low-power computing devices.
4. Telecommunications: Supports stable voltage in modems, routers, and network switches.
5. Automotive Systems: Used in infotainment systems and other automotive electronic applications.
6. Embedded Systems: Powers microcontrollers and processors that operate on a 3.3V logic level.
The regulator's efficiency and reliability make it versatile for various applications requiring a 3.3V output.