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LM2576S-3.3
+NomenclatureIC REG BUCK 3.3V 3A TO263-5
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FabricantTexas Instruments
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Pièce fabricant #LM2576S-3.3
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Package TO-263-6
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En stock2336
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Spécifications
| Attribut | Valeur |
| Package / Case | Tube |
| 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 |
Présentation
Description
The LM2576S-3.3 requires minimal external components, typically including an inductor, diode, and capacitors, simplifying the design process. It comes in a TO-263 surface-mount package, which aids in heat dissipation. This regulator is suitable for applications such as power supplies for battery-powered devices, distributed power systems, and automotive systems. Its ease of use, reliability, and robust feature set make it a popular choice for various electronics projects and commercial products.
Equivalent
Features
1. Output Voltage: Fixed output voltage of 3.3V.
2. Output Current: Can deliver up to 3A of output current.
3. Efficiency: High efficiency due to its switching regulator design, reducing power loss and heat.
4. Input Voltage Range: Accepts a wide input voltage range from 4V to 40V, providing flexibility in various applications.
5. Frequency: Operates at a fixed frequency of 52 kHz, which helps in minimizing external component size.
6. Thermal Shutdown: Built-in thermal shutdown feature to protect the device from overheating.
7. Current Limiting: Includes current limiting to protect against excessive load currents.
8. Low Standby Current: Features low standby current, enhancing power efficiency when not active.
9. Simple Design: Requires minimal external components, simplifying the design and reducing cost.
10. Package: Available in a TO-263 surface-mount package, facilitating compact, high-density designs.
These features make the LM2576S-3.3 suitable for various applications, including power supply solutions for embedded systems and other electronics requiring a stable 3.3V output.
Pinout
1. VIN (Pin 1): This is the input supply voltage pin. It accepts a wide range of input voltages, typically up to 40V.
2. Output (Pin 2): This pin provides the regulated output voltage of 3.3V.
3. Ground (Pin 3): This pin is connected to the ground.
4. Feedback (Pin 4): For fixed voltage versions like the LM2576S-3.3, this pin is used for output voltage regulation. It is typically internally connected in fixed versions.
5. ON/OFF (Pin 5): This pin is used to enable or disable the regulator. Connecting it to ground turns the regulator ON, and applying a high-level voltage turns it OFF.
The LM2576S-3.3 is efficient and suitable for powering various devices requiring a steady 3.3V output.
Manufacturer
Application
1. Power Supply Systems: Used in regulated power supply circuits to convert higher voltages to a stable 3.3V output.
2. Battery-Powered Devices: Provides efficient power management for battery-operated gadgets, extending battery life.
3. Embedded Systems: Suitable for microcontrollers and digital circuits requiring a consistent 3.3V supply.
4. Consumer Electronics: Utilized in devices like set-top boxes and gaming consoles for power regulation.
5. Industrial Automation: Used in control systems for machinery and equipment requiring stable voltage inputs.