LM3489QMM/NOPB

The LM3489QMM/NOPB is a high-performance, integrated voltage regulator from Texas Instruments, designed primarily for use in power management applications. This device is part of the LM3489 family, which is known for its efficiency and versatility in various power supply designs.

Key Features:

1. Type: The LM3489QMM/NOPB is a synchronous buck (step-down) regulator, which means it efficiently converts a higher input voltage to a lower output voltage.

2. Input Voltage Range: It typically operates with an input voltage range of 4.5V to 60V, making it suitable for a wide range of applications, including automotive and industrial systems.

3. Output Voltage: The output voltage can be adjusted from 0.8V to 0.9 times the input voltage, allowing for flexibility in design. The output voltage can be set using external resistors.

4. Output Current: The device can deliver up to 3A of continuous output current, making it capable of powering various loads.

5. Efficiency: The LM3489QMM/NOPB is designed for high efficiency, often exceeding 90%, which helps in reducing heat generation and improving overall system reliability.

6. Switching Frequency: It operates at a fixed switching frequency, typically around 300 kHz, which helps in minimizing the size of external components such as inductors and capacitors.

7. Protection Features: The regulator includes several built-in protection features, such as overcurrent protection, thermal shutdown, and under-voltage lockout, ensuring safe operation under various conditions.

8. Package Type: The LM3489QMM/NOPB is housed in a compact QFN (Quad Flat No-lead) package, which aids in thermal performance and space-saving on PCBs.

9. Control Method: It employs a voltage mode control scheme, which provides good transient response and stability across a range of load conditions.

10. Applications: This device is suitable for a variety of applications, including power supplies for microcontrollers, FPGAs, and other digital circuits, as well as in automotive power management systems.

Summary:

The LM3489QMM/NOPB from Texas Instruments is a robust and efficient synchronous buck regulator that offers a wide input voltage range, adjustable output voltage, and high output current capability. Its combination of efficiency, protection features, and compact packaging makes it an excellent choice for modern power management solutions in various electronic applications.