LM2670S-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670S-5.0/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 260 kHz. It delivers a fixed output voltage of 5 V with a maximum continuous output current of 3 A. The device accepts an input voltage range from 8 V to 40 V and utilizes a TO-263 (D2PAK) surface-mount package. It features integrated current limiting and thermal shutdown for protection, functioning as a complete monolithic switching power supply solution.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-efficiency synchronous switch controller and power MOSFET into a single monolithic package.
• Includes built-in current limit and thermal shutdown circuitry to protect against overload conditions.
• Operates at a fixed 260 kHz switching frequency to allow for the use of small external passive components.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power architectures
• Battery-powered systems requiring efficient step-down conversion
• General-purpose 5 V power supply designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free packaging and RoHS compliance as per manufacturer standards. Confirm the 'S' designation corresponds to the TO-263 package variant. Ensure the '-5.0' suffix matches the required fixed 5 V output specification for the target application design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from an input rail between 8 V and 40 V. It is suitable for applications needing up to 3 A of continuous load current. Consider the TO-263 package for its thermal dissipation capabilities compared to smaller surface-mount options within the same family.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM267x SIMPLE SWITCHER® family of buck converters. It shares architectural similarities with other members like the LM2673 and LM2679 but is distinguished by its 3 A current rating and fixed 5 V output configuration. The series is characterized by high efficiency and simplified design requirements due to integrated control logic.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2670S-ADJ/NOPB offers adjustable output voltage instead of fixed 5 V. LM2673SD-5.0/NOPB provides the same 5 V output but in a VSON-14 package with different thermal characteristics. LM2679S-5.0/NOPB supports higher 5 A output current in a similar TO-263 package.