LM3311SQX-HIOP

Voltage Regulators - DC DC Switching Regulators Overview

The LM3311SQX-HIOP is a high-efficiency synchronous boost DC-DC converter manufactured by Texas Instruments. It integrates a power switch and control circuitry to provide adjustable output voltage regulation with a maximum continuous output current of 2A. The device operates within an input voltage range suitable for single-cell lithium-ion battery applications, stepping up the voltage to levels required by downstream loads. Packaged in a compact 24-pin WQFN (Wide Quad Flat No-leads) footprint, it supports efficient thermal dissipation. The component includes internal protection features such as over-current limiting and thermal shutdown to ensure reliable operation under varying load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous power switch for high conversion efficiency
• Provides adjustable output voltage regulation via external feedback resistors
• Includes built-in over-current and thermal protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Single-cell lithium-ion battery powered portable devices
• LED driver circuits requiring boosted voltage
• Wireless communication modules needing stable supply rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix HIOP against the manufacturer's official datasheet to confirm pinout compatibility and functional specifications. Ensure the ordering part number matches the exact package variant required for your PCB layout. Cross-reference the date code and lot information to verify authenticity and traceability. Confirm that the supplier provides valid certification documents for RoHS compliance and material declarations prior to purchase.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems powered by single-cell lithium-ion batteries that require a regulated higher voltage rail. Consider the 2A current capability and the WQFN package size relative to available board space. Evaluate the need for adjustable output voltage versus fixed voltage alternatives within the same family. Assess thermal management requirements based on the expected load current and ambient operating temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM3311 belongs to Texas Instruments' portfolio of integrated power switches designed for portable electronics. It is part of a series of boost converters optimized for efficiency and small form factor applications. The SQX-HIOP designation indicates a specific tape-and-reel packaging configuration intended for automated assembly processes in high-volume manufacturing environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the official TI replacement guide or cross-reference tools for verified alternative part numbers. Ensure any substitute maintains compatible electrical characteristics, pinout definitions, and thermal performance. Verify that the alternative component meets the same regulatory and environmental standards required for the original design.