LM2611BMFX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2611BMFX/NOPB is a synchronous Cuk converter switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 2.7 V to 14 V and delivers up to 1.2 A output current. The device supports adjustable negative output voltages from -36 V to -1.23 V. It features a fixed internal switching frequency of 1.4 MHz and includes a shutdown function for power management. The component functions as both a step-down and inverting regulator, housed in a compact SOT-23-5 package suitable for surface-mount applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Implements Cuk topology for combined buck and inverting regulation capabilities
• Integrates synchronous rectification to enhance conversion efficiency
• Includes a dedicated shutdown pin for active low-power control

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring negative supply rails
• Battery-powered systems utilizing single-cell or multi-cell inputs
• Industrial equipment needing isolated or inverted voltage generation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'BMFX' against the manufacturer's official datasheet to confirm temperature grade and packaging configuration. Ensure compatibility with the required SOT-23-5 footprint during PCB layout. Confirm RoHS compliance status through the latest product change notifications provided by Texas Instruments before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a design requires simultaneous step-down and inverting functionality within a minimal footprint. The 1.4 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the 1.2 A current limit and thermal performance in the SOT-23-5 package when determining heat dissipation requirements for the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2611 series of DC/DC converters designed for space-constrained portable electronics. It serves as a power management integrated circuit (PMIC) offering versatile voltage conversion options. The device is distinct from standard buck regulators due to its ability to generate negative outputs efficiently while maintaining high efficiency through synchronous operation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2611AMF/NOPB is a documented equivalent variant within the same family.