LM2670T-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670T-ADJ/NOPB is a SIMPLE SWITCHER® high-efficiency 3A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides an adjustable output voltage from 1.2V to 37V. The device features a fixed switching frequency of 260kHz, enabling the use of compact passive components. It supports a maximum output current of 3A and includes integrated thermal shutdown and current limit protection. The component is rated for operation between -40°C and +125°C junction temperature and is housed in a TO-220-7 through-hole package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a power switch and control circuitry into a single monolithic IC for simplified design
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for robust protection
• Utilizes a fixed 260kHz switching frequency to minimize external component size and cost

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for distributed power systems
• Battery-powered applications requiring efficient step-down conversion
• General-purpose 5V or 3.3V regulators derived from higher bus voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer documentation. Confirm the 'T' designation corresponds to the TO-220-7 through-hole package variant rather than surface-mount options. Ensure compatibility with required thermal management solutions given the power dissipation characteristics at full load. Cross-reference official datasheets for any recent pinout or electrical specification updates before final integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a through-hole solution is preferred for high-current applications up to 3A. It is suitable for designs requiring an adjustable output voltage within the 1.2V to 37V range. Consider the 260kHz switching frequency for trade-offs between efficiency and filter component size. Evaluate thermal performance requirements based on the expected ambient temperature and load conditions to ensure reliable operation within the specified junction temperature limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673/LM2679 family of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. It shares architectural similarities with other members like the LM2673 and LM2679 but differs in package type and specific current ratings. The series is characterized by integrated power switches and minimal external component count, targeting cost-sensitive and space-constrained power supply designs across industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2670T-5.0/NOPB offers a fixed 5V output option within the same package and family.