LM2621MMX/NOPB

The LM2621MMX/NOPB is a high-performance, step-up (boost) DC-DC converter designed by Texas Instruments. It is particularly well-suited for applications requiring efficient power conversion from a lower voltage source to a higher voltage output. Here’s a detailed description of its features and specifications:

General Overview:

• Type: Step-Up (Boost) DC-DC Converter
• Manufacturer: Texas Instruments
• Package Type: 10-pin VSON (Very Thin, Small Outline No-lead) package, which allows for a compact design and efficient thermal management.

Key Features:

• Input Voltage Range: The LM2621 operates over a wide input voltage range, typically from 2.5V to 5.5V, making it suitable for battery-powered applications.
• Output Voltage: It can generate output voltages up to 28V, which is ideal for powering devices that require higher voltage levels.
• Output Current: The device can deliver output currents up to 1A, providing sufficient power for various applications.
• Efficiency: The LM2621 boasts high efficiency, often exceeding 85%, which helps to extend battery life in portable applications.
• Switching Frequency: It operates at a fixed switching frequency, typically around 1.2 MHz, allowing for smaller external components and reduced board space.
• Control Method: The converter uses a current-mode control scheme, which enhances stability and transient response.

Protection Features:

• Overcurrent Protection: The LM2621 includes built-in overcurrent protection to prevent damage during fault conditions.
• Thermal Shutdown: It features thermal shutdown capabilities to protect the device from overheating.
• Soft Start: The soft-start feature minimizes inrush current during startup, reducing stress on the power supply and connected components.

Applications:

The LM2621 is suitable for a variety of applications, including:

• Battery-powered devices
• Portable electronics
• LED drivers
• Power management systems
• Automotive applications

Pin Configuration:

The 10-pin VSON package provides a compact footprint, with pins designated for input voltage, output voltage, ground, and feedback, among others. The layout is designed to minimize parasitic inductance and resistance, enhancing performance.

Conclusion:

The LM2621MMX/NOPB from Texas Instruments is a versatile and efficient boost converter that meets the demands of modern electronic applications. Its combination of high efficiency, compact size, and robust protection features makes it an excellent choice for designers looking to optimize power management in their products.