LM2670SX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670SX-ADJ/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 260 kHz. It delivers an adjustable output voltage ranging from 1.2 V to 37 V with a maximum output current of 3 A. The device accepts an input voltage range of 4.5 V to 40 V and features a typical quiescent current of 4.2 mA. Designed for surface-mount applications, it utilizes a TO-263-7 (D2PAK) package. The component supports operation across an extended temperature range from -40°C to +125°C, ensuring reliable performance in demanding environments while maintaining high efficiency.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch enables efficient buck conversion without external driver requirements
• Fixed 260 kHz switching frequency allows for compact passive component selection
• Adjustable output voltage provides flexible design configurations for various load requirements
• Internal thermal shutdown protects the device against overheating conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment power management
• Industrial control system voltage stepping
• Telecommunications infrastructure power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as NOPB to ensure compliance with specific regulatory standards like RoHS. Confirm that the ordering code matches the exact package type and temperature grade required for your application. Cross-reference the manufacturer's latest datasheet revision to validate electrical characteristics and pinout configurations before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring a 3 A output capability with an adjustable voltage range up to 37 V. Ensure the input voltage source remains within the specified 4.5 V to 40 V limits to maintain stable regulation. Consider the thermal dissipation requirements associated with the TO-263-7 package under maximum load conditions to determine appropriate heatsinking strategies.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the SIMPLE SWITCHER family, which integrates power switches and control circuitry into a single monolithic IC. The LM2670 series is designed to simplify power supply design by reducing the number of external components needed compared to traditional discrete solutions. It serves as a robust solution for medium-power applications where size constraints and efficiency are critical design factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible alternatives include the LM2670S-ADJ/NOPB for identical specifications in a standard D2PAK package. For automotive-grade requirements, consider the LM22670QTJE-ADJ/NOPB which offers AEC-Q100 qualification. Verify pin compatibility and thermal performance when substituting with other members of the LM267x series.