LM3402HVMRX/NOPB

The LM3402HVMRX/NOPB is a high-performance, step-down (buck) voltage regulator from Texas Instruments, designed to provide efficient power management solutions in various applications. Here’s a detailed description of its features and specifications:

General Overview:

• Type: Step-Down (Buck) Voltage Regulator
• Manufacturer: Texas Instruments
• Package Type: HTQFP (Thin Quad Flat Pack) with 32 pins
• Operating Temperature Range: -40°C to +125°C, making it suitable for industrial and automotive applications.

Key Features:

1. Input Voltage Range: The LM3402HVMRX/NOPB can accept a wide input voltage range, typically from 4.5V to 60V, allowing it to be used in various power supply designs.

2. Output Voltage: The device can be configured to provide adjustable output voltages, typically ranging from 0.8V to 0.9 times the input voltage, depending on the external resistor divider configuration.

3. High Efficiency: The regulator is designed for high efficiency, often exceeding 90%, which helps in reducing heat generation and improving overall system reliability.

4. Switching Frequency: The LM3402HVMRX/NOPB operates at a fixed switching frequency, typically around 300 kHz, which helps in minimizing the size of external components like inductors and capacitors.

5. Current Limit: It features a current limit function that protects the device and the load from overcurrent conditions, enhancing the safety and longevity of the application.

6. Soft Start: The soft-start feature helps to limit inrush current during startup, preventing voltage overshoot and ensuring a smooth power-up sequence.

7. Integrated Features: The device includes integrated features such as a power good indicator, thermal shutdown, and overvoltage protection, which contribute to robust operation in various conditions.

8. Control Method: The LM3402HVMRX/NOPB uses a voltage mode control scheme, which provides good transient response and stability across a wide range of load conditions.

Applications:

The LM3402HVMRX/NOPB is suitable for a variety of applications, including:

• Automotive power supplies
• Industrial equipment
• Telecommunications
• Consumer electronics
• Battery-powered devices

Pin Configuration:

The 32-pin HTQFP package allows for a compact design, with pins designated for input voltage, output voltage, ground, feedback, and control signals. The layout is optimized for thermal performance and ease of integration into PCB designs.

Conclusion:

The LM3402HVMRX/NOPB from Texas Instruments is a versatile and efficient step-down voltage regulator that meets the demands of modern electronic applications. Its combination of high efficiency, wide input voltage range, and integrated protection features make it an excellent choice for designers looking to implement reliable power management solutions.