LM2577SX-12/NOPB

The LM2577SX-12/NOPB is a high-performance step-up (boost) voltage regulator manufactured by Texas Instruments. It is designed to provide a regulated output voltage of 12V from a lower input voltage, making it suitable for applications where higher voltage is required from a battery or other low-voltage source.

Key Features:

1. Output Voltage: The LM2577SX-12/NOPB specifically outputs a fixed voltage of 12V, which is ideal for powering devices that require a stable 12V supply.

2. Input Voltage Range: The device operates over a wide input voltage range, typically from 3.5V to 40V, allowing it to be used with various power sources, including batteries and power adapters.

3. Output Current: It can deliver up to 3A of output current, making it suitable for powering a range of devices, from small electronics to larger loads.

4. Efficiency: The LM2577SX-12/NOPB boasts high efficiency, often exceeding 80%, which helps to minimize heat generation and prolong battery life in portable applications.

5. Switching Frequency: The device operates at a fixed switching frequency of 100 kHz, which helps to reduce the size of external components such as inductors and capacitors.

6. Thermal Protection: It includes built-in thermal shutdown protection, which prevents damage to the device in case of overheating.

7. Package Type: The LM2577SX-12/NOPB is available in a surface-mount package (SOT-223), which allows for compact designs and easy integration into printed circuit boards (PCBs).

8. Applications: This voltage regulator is commonly used in various applications, including battery-powered devices, automotive electronics, LED drivers, and other systems requiring a stable 12V output.

9. No Lead (NOPB): The designation "NOPB" indicates that the part is free from lead, making it compliant with environmental regulations such as RoHS (Restriction of Hazardous Substances).

Electrical Characteristics:

• Input Voltage Range: 3.5V to 40V
• Output Voltage: 12V (fixed)
• Output Current: Up to 3A
• Switching Frequency: 100 kHz
• Efficiency: Typically > 80%
• Thermal Shutdown: Yes

Conclusion:

The LM2577SX-12/NOPB is a versatile and efficient boost converter that is well-suited for applications requiring a reliable 12V output from a lower voltage source. Its combination of high output current capability, wide input voltage range, and built-in protection features make it a popular choice among engineers and designers in various electronic applications.