LM2611AMF/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2611AMF/NOPB is a synchronous Cuk converter IC from Texas Instruments, designed for high-efficiency power management. 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 buck, inverting, and boost topologies, providing adjustable negative output voltages from -36 V to -1.23 V. Operating at a fixed switching frequency of 1.4 MHz, it ensures compact passive component sizing. The unit functions within a temperature range of -40°C to +125°C and is housed in a space-saving SOT-23-5 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Implements synchronous rectification to enhance conversion efficiency across various operating loads.
• Integrates a fixed 1.4 MHz switching frequency to minimize external inductor and capacitor requirements.
• Supports multiple circuit topologies including Buck, Inverting, and Boost configurations for versatile design applications.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring efficient step-down or inverted voltage regulation
• Industrial control systems needing isolated or negative rail generation
• Automotive electronics operating within wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms RoHS compliance and lead-free status as per manufacturer specifications. Ensure the ordering part number matches the exact tape-and-reel quantity required for production runs. Cross-reference the datasheet revision history to confirm pinout consistency and electrical characteristics against existing designs. Confirm availability through authorized distributors to guarantee component authenticity and traceability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits that require simultaneous positive and negative rails or efficient inverting topology. The 1.4 MHz frequency allows for smaller magnetic components compared to lower-frequency alternatives. Evaluate thermal performance under maximum load conditions due to the small SOT-23-5 footprint. Consider input voltage stability to ensure operation remains within the 2.7 V to 14 V specified window during transient events.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2611 series of DC/DC converters, categorized under PMIC solutions. It serves as a modern replacement for older non-RoHS variants like the LM2611AMF, which has been discontinued. The NOPB suffix indicates environmental compliance, aligning with global regulatory standards for electronic components used in commercial and industrial applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM2611AMF is listed as obsolete; the LM2611AMF/NOPB is the confirmed direct equivalent. Verify pin compatibility and thermal characteristics when transitioning from legacy inventory to ensure seamless integration into existing PCB layouts without redesign.

Voltage Regulators - DC DC Switching Regulators FAQ

What topologies does the LM2611AMF/NOPB support?

It supports Buck, Inverting (Cuk), and Boost configurations.

Is the output voltage fixed or adjustable?

The output voltage is adjustable via external feedback resistors.