LM3668SDX-2833/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3668SDX-2833/NOPB is a synchronous buck-boost DC/DC converter manufactured by Texas Instruments, formerly National Semiconductor. It operates with an input voltage range of 2.5 V to 5.5 V and provides a programmable output voltage of 2.8 V or 3.3 V at up to 1 A. The device utilizes a 2.2 MHz switching frequency and features a 12-WSON package. It supports dual-mode operation for high efficiency across light and heavy loads.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck-boost topology enables efficient power conversion in battery-powered applications where input voltage may rise above or fall below the output requirement.
• Dual-mode control mechanism optimizes efficiency by transitioning between pulse-width modulation and pulse-frequency modulation based on load conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring stable power from single-cell lithium-ion batteries
• Applications with input voltages that fluctuate around the required output level
• Battery-operated systems needing extended runtime through high-efficiency regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity as this part is marked obsolete. Confirm availability through authorized distributors only. Check for recent production change notifications regarding pinout or electrical parameter updates before finalizing designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits with input voltages ranging from 2.5 V to 5.5 V and requiring a regulated 2.8 V or 3.3 V output. Ensure thermal management considerations align with the 12-WSON package constraints for the intended operating environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3668 family of single-inductor buck-boost converters. It shares functional similarities with other parts in the series but is distinguished by its specific output voltage configuration and package type within the Texas Instruments portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

TPS63802DLAT is listed as an available substitute. Verify compatibility regarding pin assignments, control logic, and electrical specifications before implementation.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM3668SDX-2833/NOPB still in production?

No, the component is marked as obsolete and no longer manufactured by Texas Instruments.

What is the maximum switching frequency of this converter?

The device operates at a fixed switching frequency of 2.2 MHz.