The LM3487MMX/NOPB is a high-performance Low Iq High Voltage Synchronous Boost Converter from Texas Instruments (formerly National Semiconductor). It is designed for applications requiring efficient step-up conversion from a low voltage to a higher voltage, while also minimizing quiescent current to extend battery life.

Applications:

• Boost Regulators
• LED Lighting
• Portable Devices
• Battery-Powered Systems
• Bias Supplies
• LCD Bias
• Power over Ethernet (PoE) applications

Features:

• Wide Input Voltage Range: Operates from a wide input voltage range, typically from 3V to 42V.
• High Switching Frequency: Allows for smaller external components and faster transient response, often between 50kHz and 1MHz.
• Synchronous Rectification: Improves efficiency by replacing the Schottky diode with a MOSFET switch.
• Adjustable Output Voltage: Allows for flexible output voltage settings.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• Current Limit Protection: Protects the converter from overcurrent conditions.
• Thermal Shutdown Protection: Protects the converter from overheating.
• Enable/Disable Control: Allows for external control of the converter's operation.

Benefits:

• High Efficiency: Synchronous rectification and optimized design minimize power losses and improve efficiency.
• Extended Battery Life: Low quiescent current reduces power consumption in standby mode, extending battery life for portable applications.
• Small Solution Size: High switching frequency allows for smaller external components, reducing the overall solution size.
• Robust Protection: Current limit and thermal shutdown protection ensure reliable operation under fault conditions.
• Flexible Design: Adjustable output voltage and enable/disable control allow for easy customization and integration into various applications.

Additional Details:

The LM3487MMX/NOPB utilizes current-mode control for excellent line and load regulation. The switching frequency can be set by an external resistor. The device comes in a thermally enhanced package, allowing for efficient heat dissipation. Proper layout techniques are crucial for minimizing noise and optimizing performance. The datasheet provides detailed information on component selection, layout guidelines, and thermal considerations. The NOPB suffix indicates that the device is lead-free and RoHS compliant.