LM2679SD-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2679SD-ADJ/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, housed in a VSON-14 surface-mount package. It operates with an input voltage range of 8 V to 40 V and delivers up to 5 A output current. The adjustable output voltage spans from 1.2 V to 37 V. Key electrical parameters include a fixed switching frequency of 260 kHz, a quiescent current of 4.2 mA, and an operating junction temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-efficiency DMOS power switch for effective thermal management and reduced external component count.
• Features programmable peak current limiting to protect the device and load circuitry under fault conditions.
• Includes internal soft-start functionality to minimize input surge currents during power-up sequences.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient pre-regulators for linear power supply systems
• Battery charger circuits requiring adjustable voltage regulation
• Point-of-load regulation in distributed power architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm RoHS compliance status and lead-free characteristics. Ensure the ordering part number matches the required package type and output configuration. Cross-reference the datasheet revision date to validate all technical specifications before integration into final designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing buck converters requiring high current capacity within a compact surface-mount footprint. The adjustable output feature provides flexibility for various rail voltages. Consider the 260 kHz switching frequency for balancing component size and efficiency requirements in space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SIMPLE SWITCHER family, designed for ease of implementation with minimal external components. The LM2679 series includes both fixed and adjustable output variants across different packages. This specific model represents the adjustable version in a leadless VSON package, offering thermal performance advantages over traditional through-hole options.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacement options include the LM2679SD-ADJ without the NOPB suffix, though compliance differences may exist. For non-adjustable needs, fixed voltage variants like the LM2679SD-3.3/NOPB or LM2679SD-5.0/NOPB are available within the same package family.