LM3676SD-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3676SD-3.3/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments. It operates with an input voltage range of 2.9 V to 5.5 V and provides a fixed positive output of 3.3 V at up to 600 mA. The device integrates a 2 MHz switching frequency, enabling the use of small external components. It features mode control for efficiency optimization across load conditions and includes protection mechanisms such as thermal shutdown and current limiting. The component is housed in an 8-WFDFN package with an exposed pad.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-frequency 2 MHz switcher to minimize passive component size
• Features mode control logic to optimize efficiency under varying load conditions
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for robust operation

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices
• Cellular phones and mobile communication modules
• Personal digital assistants (PDAs)
• MP3 players and audio equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free compliance and RoHS adherence as per Texas Instruments standards. Ensure the ordering part number matches the exact 8-WFDFN package variant required for your PCB footprint. Cross-reference the datasheet revision date to confirm the technical specifications align with your design requirements before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for single-cell lithium-ion or similar low-voltage battery applications requiring a stable 3.3 V rail. The 2 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 600 mA output limit to ensure it meets the peak current demands of the downstream circuitry without exceeding thermal limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3676 family of simple switcher regulators designed for space-constrained portable electronics. It serves as a direct replacement for older generation buck converters that require larger footprints. The device is part of Texas Instruments' portfolio aimed at simplifying power management in mobile devices through integrated control loops and minimal external component counts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for pin-compatible alternatives within the LM367x series if different output voltages are required. Verify that substitute parts maintain the same 8-WFDFN package dimensions and thermal characteristics. Confirm that the replacement supports the same 2.9 V to 5.5 V input range and 600 mA output capability.