LM2677S-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677S-ADJ/NOPB is a high-efficiency, monolithic integrated circuit step-down voltage regulator manufactured by Texas Instruments. It operates as a buck converter with an adjustable output voltage range from 1.2 V to 37 V and supports up to 5 A of output current. The device integrates a 0.5 A internal switch and features a fixed switching frequency of 260 kHz. It utilizes TO-263-7 surface-mount packaging and functions within an operating temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 0.5 A power switch for simplified external component requirements
• Supports adjustable output voltages across a wide range using external resistors
• Includes thermal shutdown and current limit protection for system reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Efficient step-down conversion from standard 12 V buses
• Battery-powered systems requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free composition and RoHS compliance. Confirm the package designation S corresponds to the TO-263-7 form factor. Ensure the ADJ suffix matches the requirement for an adjustable output voltage configuration rather than a fixed voltage variant.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-output buck topology is required with up to 5 A load capacity. The adjustable output feature allows customization via external feedback resistors. Verify that the input voltage remains within the specified operational limits relative to the desired output level.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family of power management ICs. It shares architectural similarities with other members like the LM2677T series but differs in package type and mounting style. The device is categorized under switching regulators designed for high-efficiency DC-DC conversion applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible alternatives within the same family include the LM2677T-ADJ/NOPB for through-hole applications. Cross-referencing datasheets is necessary to confirm equivalent thermal performance and electrical characteristics.