LM2676SDX-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676SDX-5.0 is a discontinued step-down switching voltage regulator from Texas Instruments, part of the SIMPLE SWITCHER family. It operates with an input voltage range of 8V to 40V and provides a fixed 5V output at up to 3A. The device utilizes a buck topology with a standard switching frequency of 260kHz. It is housed in a 14-VSON (5x6) surface-mount package. Key electrical characteristics include a maximum quiescent current of 4.2mA and an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter for efficient DC-DC step-down regulation
• Fixed internal feedback network eliminates external resistor requirements
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring high efficiency
• General-purpose 5V power supply generation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

This component is officially obsolete and no longer manufactured by Texas Instruments. Sourcing new original units is not possible through authorized channels. Verification must focus on identifying valid direct replacement part numbers rather than verifying the availability of this specific legacy code. Ensure any substitute components meet identical pinout and electrical specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Designers should transition to active alternatives within the LM2676 series that utilize RoHS-compliant packaging, such as the LM2676SDX-5.0/NOPB. Selection criteria must prioritize package compatibility and thermal performance. Verify that the replacement device supports the required 3A load current and maintains the necessary input voltage headroom for the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2676 series represents a line of high-efficiency 3A step-down regulators designed for simplicity and reliability. This specific variant belongs to the SD package family, offering a compact footprint suitable for space-constrained PCB layouts. It serves as a core component in power management architectures where stable 5V rails are derived from higher voltage sources.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SDX-5.0/NOPB