LM3677TL-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3677TL-1.8/NOPB is a fixed-output buck switching regulator from Texas Instruments, providing a stable 1.8V output at up to 600mA. It operates with an input voltage range of 2.7V to 5.5V and features a 3MHz switching frequency for compact passive component sizing. The device utilizes a 5-pin DSBGA package (YZR) and supports both PWM and PFM control modes. It functions within a temperature range of -30°C to +85°C and includes integrated protection features such as overcurrent limiting and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Compact miniature step-down DC-DC converter design optimized for space-constrained applications
• Supports ultra-low voltage circuit operation with efficient power management capabilities
• Integrates current mode control techniques for stable regulation under varying load conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Ultra-low voltage digital circuits requiring precise 1.8V rail generation
• Portable consumer electronics with strict size constraints
• Battery-powered devices utilizing buck conversion for efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TLX' indicates tape and reel packaging configuration when ordering. Confirm that the 'NOPB' designation ensures lead-free and RoHS compliance status. Ensure the 5-WFBGA DSBGA package type matches the target PCB footprint requirements. Cross-reference the exact part number against official Texas Instruments documentation to confirm availability and revision status prior to procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V output is required without external feedback network adjustments. The 3MHz switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the 600mA current limit for loads exceeding this threshold, where higher-current variants may be necessary. Evaluate the DSBGA package for surface-mount assembly compatibility and thermal dissipation needs.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3677 family of miniature step-down converters designed for low-voltage applications. It shares functional similarities with the LM3674 series but offers a higher 3MHz switching frequency compared to the 2MHz variant found in other models. The family focuses on integrating power switches and control logic into a minimal footprint for portable systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM3674MFX-1.8/NOPB serves as a related alternative within the same manufacturer portfolio, offering similar functionality with a different switching frequency and package type.