LM3678SD-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3678SD-1.2/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, featuring an integrated power switch capable of delivering up to 1.5 A of output current. The device operates with an input voltage range from 2.7 V to 5.5 V and provides a fixed 1.2 V output. It utilizes a compact WSON-10 package and supports switching frequencies up to 2.2 MHz. The component includes built-in protection features such as thermal shutdown and cycle-by-cycle current limiting to ensure reliable operation under various load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency across the load range
• Compact footprint enabled by small external component requirements
• Built-in thermal shutdown and overcurrent protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices
• Embedded systems requiring efficient voltage regulation
• Consumer electronics with limited space constraints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number matches the required output voltage and package type before procurement. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure that the supply chain source is authorized to guarantee component authenticity and traceability. Check for any recent product change notifications that may affect performance specifications or packaging details.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2 V output is required from a single-cell lithium-ion or similar battery source. Consider the 1.5 A current limit and 2.2 MHz switching frequency for applications prioritizing size reduction over extreme efficiency at very low loads. Evaluate thermal management requirements based on the expected ambient temperature and PCB copper area available for heat dissipation in the WSON-10 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3678 series of synchronous buck converters designed for space-constrained applications. It is part of Texas Instruments' portfolio of power management integrated circuits aimed at improving system efficiency in portable electronics. The series typically offers solutions that minimize external component count while maintaining robust performance characteristics suitable for modern mobile and embedded platforms.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3678SDE-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum output current capability of the LM3678SD-1.2/NOPB?

The device is rated to deliver a continuous output current of up to 1.5 A.

Does the LM3678SD-1.2/NOPB support adjustable output voltages?

No, the LM3678SD-1.2/NOPB variant provides a fixed 1.2 V output voltage. Adjustable versions are available in other suffixes within the same family.