LM2677T-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677T-ADJ/NOPB is a Texas Instruments SIMPLE SWITCHER power module featuring an integrated 5A switch. It operates as a step-down DC/DC converter with a buck topology, supporting an input voltage range of 8V to 40V and delivering an adjustable output voltage from 1.2V to 37V. The device utilizes a fixed switching frequency of 260kHz and includes internal compensation for minimal external component requirements. It is housed in a TO-220-7 package and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 5A power switch and control circuitry into a single monolithic module
• Utilizes current mode control architecture for rapid transient response
• Features internal frequency compensation to reduce external component count
• Includes thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• Distributed power supply architectures
• Battery-powered systems requiring high efficiency
• General-purpose 5A step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status. Confirm the 'T' designation indicates the TO-220 through-hole package variant rather than surface-mount options. Ensure the 'ADJ' suffix matches the requirement for an adjustable output voltage configuration instead of fixed voltage variants. Cross-reference the manufacturer part number against official datasheets to validate pinout compatibility.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust 5A current capability is required in a through-hole format. The adjustable output range allows flexibility for various system voltages. Consider the 260kHz switching frequency for balancing component size and efficiency. Verify that the input voltage does not exceed the 40V maximum rating under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2677 series of SIMPLE SWITCHER regulators. It shares functional similarities with the LM2677S (surface mount) and LM22677 (extended temperature) variants. The primary distinction lies in the TO-220 package and standard commercial temperature range compared to other family members.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2677S-ADJ/NOPB offers identical electrical performance in a surface-mount TO-263 package. LM22677T-ADJ/NOPB provides extended military-grade temperature capabilities. LM2673T-ADJ/NOPB is a lower-current alternative rated for 3A output.