LM3218SEE/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3218SEE/NOPB is a miniature, adjustable step-down DC-DC converter manufactured by Texas Instruments. Designed for RF power amplifier applications, it delivers an output current of 650 mA. The device operates as a synchronous buck regulator, integrating high-side and low-side MOSFETs to minimize external component count. It supports input voltage ranges suitable for single-cell lithium-ion battery systems and offers programmable output voltage via external resistors.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with internal high-side and low-side MOSFETs
• Compact footprint designed for space-constrained mobile and portable devices
• Adjustable output voltage capability through external feedback network

Voltage Regulators - DC DC Switching Regulators Applications

• RF power amplifiers in cellular handsets
• Single-cell lithium-ion battery powered systems
• Portable consumer electronics requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SEE' against the official Texas Instruments datasheet to confirm package type and temperature range specifications. Ensure compatibility with required input voltage levels for the target RF application. Cross-reference the RoHS compliance status indicated by the NOPB suffix with current regulatory requirements for the destination market.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for driving RF power amplifiers from a single lithium-ion cell. It is appropriate for designs prioritizing board space reduction over ultra-high efficiency at very light loads. Consider thermal management requirements due to the integrated power stage in a small package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3218 family of miniature DC-DC converters. It is derived from National Semiconductor technology now managed by Texas Instruments. The device addresses the need for efficient power management in mobile communication devices where size and battery life are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3218SE: Original National Semiconductor version without NOPB suffix. LM3218SEX: Tape and reel packaging variant. LM3218SEE/NOPB: Current production version.