LM2676T-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676T-3.3/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 a fixed 3.3V output at up to 3A. The device integrates a 150mΩ power switch and features a switching frequency of 260kHz. It utilizes current mode control for rapid transient response and includes thermal shutdown protection. The component is housed in a TO-220-7 package, suitable for through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a low-on-resistance power switch to minimize conduction losses
• Utilizes current mode control architecture for fast transient response
• Includes internal thermal shutdown circuitry for overload protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• High-efficiency step-down conversion from standard bus voltages
• Battery-powered equipment requiring efficient voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's datasheet. Confirm the 'T' designation corresponds to the TO-220-7 through-hole package variant rather than surface-mount options. Ensure the specific revision matches the required pinout and thermal characteristics for your PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3V output is required from an input voltage between 8V and 40V. It is appropriate for applications needing up to 3A continuous load current with moderate efficiency requirements. Consider alternative packages if surface-mount technology is preferred or if higher current capacity beyond 3A is necessary.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM267x series of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. The series offers various output voltage options and packaging styles, including adjustable variants and different thermal footprints. It represents a legacy but widely used solution for general-purpose power management in industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2676T-3.3/NOPB (same part) or other LM2676 variants with matching output voltage and package. Cross-reference with LM2676SX-3.3/NOPB for surface-mount equivalents. Verify pin compatibility and thermal performance before substitution.