LM2677SD-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2677SD-12 is a SIMPLE SWITCHER high-efficiency 5A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed 12V output at up to 5A. The device features a 260kHz switching frequency and integrates a synchronous switch for improved efficiency. It is housed in a VSON-14 package, supports surface-mount installation, and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous power switch to achieve high conversion efficiency across the load range.
• Includes internal compensation to minimize external component count and simplify design.
• Features thermal shutdown protection to safeguard the device during overload or overheating conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• Power supplies for embedded computing systems
• Battery-powered applications requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix against the manufacturer datasheet to confirm package type and temperature grade. Ensure the ordering part number matches the required output voltage and current specifications. Confirm RoHS compliance status through official documentation before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a fixed 12V output with up to 5A current capability from an 8V to 40V input source. Consider the VSON-14 package for space-constrained PCB layouts. Evaluate thermal performance requirements given the high current density and operating temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2677 series of SIMPLE SWITCHER regulators, designed for high-efficiency step-down applications. It is distinct from the LM2676 (3A) and LM2678 (different package/variant) families. The 'SD' suffix typically indicates the VSON-14 package variant, differentiating it from TO-263 versions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2677S-12/NOPB: Same electrical specifications but uses a TO-263-7 package instead of VSON-14. Requires footprint adaptation. LM2678SD-12/NOPB: Similar performance but may have different pinout or thermal characteristics; verify datasheet compatibility.