LM3311SQ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3311SQ/NOPB is an adjustable boost DC-DC switching regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and delivers up to 2 A of output current. The device integrates a high-side N-channel power switch and supports output voltages from 3.0 V to 40 V. It utilizes a fixed 1.2 MHz switching frequency and features a compact 24-pin WQFN package designed for space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-side N-channel power switch for simplified external component count
• Supports wide input voltage ranges suitable for single-cell lithium-ion battery systems
• Features fixed 1.2 MHz switching frequency to minimize passive component size
• Includes comprehensive protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics powered by single-cell lithium-ion batteries
• USB-powered devices requiring boosted voltage rails
• Industrial control modules with low-voltage input requirements
• Battery-operated instrumentation and sensor interfaces

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer datasheet to ensure compatibility with required pinout and thermal characteristics. Confirm RoHS compliance status through official documentation prior to integration. Validate that the WQFN-24 package dimensions align with the target PCB footprint design constraints.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing boost converters requiring high efficiency and minimal external inductance. Ensure the application input voltage remains within the specified operational limits to maintain regulation stability. Consider thermal dissipation requirements given the integrated power switch capabilities and ambient operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3311 family of synchronous boost regulators. It serves as a direct replacement for legacy non-NOPB variants while maintaining identical electrical performance and pinout compatibility. The NOPB suffix indicates lead-free construction compliant with international environmental standards.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3311SQX/NOPB is a verified equivalent variant differing only in reel packaging format. Other LM3311 family members may offer alternative pin configurations or thermal enhancements but require schematic verification.