LM3677LEE-1.5/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3677LEE-1.5/NOPB is a miniature step-down DC-DC converter designed for ultra-low voltage circuits. It provides a fixed output voltage of 1.5V with a maximum output current of 600mA. The device operates at a switching frequency of 3MHz, enabling the use of small external components. It features an input voltage range supporting low-voltage sources and includes integrated power switches. The component is housed in a compact 6-pin UFDFN package, suitable for space-constrained portable applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 1.5V output configuration for simplified design
• High-frequency operation reduces passive component size
• Integrated power switches minimize board footprint
• Optimized for ultra-low voltage system requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring low voltage regulation
• Battery-powered systems with limited space constraints
• Ultra-low voltage circuit power management
• Miniature consumer electronics power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '1.5' confirms the fixed 1.5V output voltage before procurement. Ensure the 'NOPB' designation indicates lead-free compliance and RoHS adherence as per Texas Instruments standards. Confirm the 6-USON package type matches your PCB layout requirements. Cross-reference the full part number to distinguish from other output voltage variants within the LM3677 family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.5V output is required without external feedback resistors. The 3MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the 600mA current limit for load requirements. The UFDFN package is ideal for high-density layouts. Verify input voltage compatibility with the source supply.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3677 series of miniature step-down converters from Texas Instruments. The series focuses on ultra-low voltage applications with high efficiency. The LM3677LEE variant specifically denotes the fixed output version. The NOPB suffix indicates environmental compliance. This model is distinct from adjustable versions or those with different output voltages like 1.2V or 1.8V.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM3677 variants with different fixed outputs (e.g., LM3677LEE-1.2/NOPB) if voltage adjustment is possible. Check pin-to-pin compatibility with similar buck converters from other manufacturers only if datasheets confirm identical electrical characteristics and package dimensions.