LM3679TL-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3679TL-1.8/NOPB is a synchronous step-down DC-DC converter from Texas Instruments, designed for ultra-low voltage applications. It provides a fixed 1.8V output with a maximum current of 350mA. The device operates at a switching frequency of 3MHz and features a typical shutdown current of 0.01 µA. It is housed in a compact 5-DSBGA package (1.41x1.08 mm) and supports an operating temperature range of -30°C to 85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification for improved efficiency
• Ultra-low shutdown current consumption
• Miniature footprint suitable for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Battery-powered devices
• Ultra-low profile systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact package dimensions and pinout against the official Texas Instruments datasheet before integration. Confirm that the 'NOPB' suffix indicates lead-free and RoHS compliance as per manufacturer standards. Ensure thermal management requirements are met for the DSBGA package under full load conditions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V output is required with minimal external components. The 3MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 350mA limit for load requirements and the specific temperature range for environmental suitability.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3679 family of miniature step-down converters. It shares core topology with variants like the LM3679UR-1.8/NOPB but differs in packaging (TL vs UR) and potentially thermal characteristics. The family targets portable applications requiring high efficiency in small form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM3679 variants such as LM3679UR-1.8/NOPB, provided the package difference is acceptable. Verify electrical parameters match exactly. No other distinct part numbers are confirmed as direct replacements in public documentation.