LM2670LD-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670LD-3.3 is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator with synchronous rectification, manufactured by Texas Instruments (formerly National Semiconductor). It operates from an input voltage range of 8V to 40V and provides a fixed 3.3V output. The device features a switching frequency of 260kHz and supports junction temperatures from -40°C to 125°C. It utilizes a 14-VSON package with exposed thermal pad for efficient heat dissipation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency
• Fixed 3.3V output configuration
• Wide 8V to 40V input voltage range
• Thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in industrial systems
• Power supplies for embedded controllers
• Battery-powered equipment requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, as National Semiconductor was acquired. Confirm the suffix 'NOPB' indicates lead-free and RoHS compliance if required. Ensure the package matches the 14-VSON specification. Check for obsolescence status or lifecycle notices on official TI channels before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required with up to 3A load capability. The synchronous design offers better efficiency than non-synchronous alternatives like the LM2673. Consider the 14-VSON package for space-constrained PCB layouts requiring good thermal performance under high load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family of DC/DC converters. It shares the core architecture with the LM2670 series but differs in package and specific output voltage. It serves as a higher-current alternative to the LM2672 and LM2674 within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2670SD-3.3/NOPB: Same electrical specifications with different package (DSO vs VSON). LM2670SX-3.3/NOPB: Same electrical specifications with different package (XSON vs VSON). Verify pinout compatibility and thermal characteristics when substituting packages.