LM2677SD-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677SD-3.3/NOPB is a SIMPLE SWITCHER® high-efficiency 5A step-down voltage regulator from Texas Instruments, operating at a fixed 260 kHz switching frequency. It features a wide input voltage range of 8V to 40V and provides a fixed 3.3V output with up to 5A load current capability. The device utilizes a VSON-14 package for compact surface-mount installation. It includes internal compensation, current limit protection, thermal shutdown, and a 4.2mA typical quiescent current. The operational temperature range spans from -40°C to +125°C TJ.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for enhanced efficiency
• Fixed 260 kHz switching frequency enabling small external component size
• Built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital signal processors
• Power supply modules for embedded systems
• Battery-powered equipment requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SD' confirms the VSON-14 package variant rather than the TO-263 (S) or SO-16 (D) packages found in other LM2677 variants. Confirm the '-3.3' designation matches the required fixed output voltage. Ensure the '/NOPB' indicates lead-free and RoHS compliance status as per manufacturer specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required with up to 5A continuous current capability. It is suitable for designs needing a wide 8V to 40V input range and compact footprint via the VSON-14 package. Consider the 260 kHz frequency for balancing component size and efficiency against noise sensitivity requirements in the target application circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM267x series of SIMPLE SWITCHER regulators, which are monolithic integrated step-down converters. The series offers high efficiency and ease of design implementation due to internal compensation. The LM2677 specifically distinguishes itself by providing higher current capacity compared to lower-current variants within the same family architecture.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2677SD-3.3X/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2677SD-3.3/NOPB?

The maximum input voltage is 40V.

Does the LM2677SD-3.3/NOPB include synchronous rectification?

Yes, it integrates synchronous rectification to improve efficiency.