LM2677SDX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677SDX-12/NOPB is a high-efficiency 5A step-down voltage regulator from Texas Instruments' SIMPLE SWITCHER family. It operates with an input voltage range of 8V to 40V and provides a fixed 12V output. The device integrates a 0.5A, 60V rated switch and operates at a switching frequency of 260kHz. It utilizes current mode control for fast transient response and inherent line and load loop compensation. The component is housed in a VSON-14 package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 0.5A, 60V rated power switch for compact design
• Utilizes current mode control architecture for rapid transient response
• Features internal frequency compensation to minimize external components
• Includes thermal shutdown and cycle-by-cycle current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• Distributed power supply architectures
• Battery-powered systems requiring efficient step-down conversion
• Telecommunications infrastructure power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DX' indicates tape-and-reel packaging when ordering. Confirm the '12' designation corresponds to the fixed 12V output variant. Ensure compatibility with the VSON-14 footprint during PCB layout. Check for RoHS compliance status as indicated by the NOPB suffix. Validate that the 260kHz switching frequency aligns with electromagnetic interference requirements for the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from an 8V to 40V input source. It is suitable for applications demanding up to 5A continuous load current. Consider the VSON-14 package for space-constrained designs compared to larger TO-263 or TO-220 alternatives. Evaluate the 260kHz frequency against inductor size constraints and noise sensitivity needs relative to lower-frequency regulators.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2677 series of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. It serves as a robust solution for replacing linear regulators in medium-to-high current applications. The series is characterized by minimal external component count and integrated protection features, making it a standard choice for general-purpose power management in commercial and industrial electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2677S-12/NOPB (Tube Packaging)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2677SDX-12/NOPB?

The maximum input voltage is 40V.

Does this regulator support adjustable output voltage?

No, the '-12' suffix indicates a fixed 12V output. Adjustable versions use the '-ADJ' suffix.

What type of control architecture does the LM2677 use?

It uses current mode control for stable operation and fast transient response.