LM3673TL-1.875/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3673TL-1.875/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, part of the LM3673 series. It operates with a switching frequency of 2 MHz and provides a regulated output voltage of 1.875 V at a maximum output current of 350 mA. The device accepts an input voltage range up to 5.5 V and utilizes a DSBGA-5 package for surface mount installation. It functions within an operating temperature range from -30°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-frequency buck converter topology to minimize external component size.
• Provides a fixed internal feedback reference for simplified circuit design without external resistors.
• Features a compact footprint suitable for space-constrained portable applications.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded circuits needing stable low-voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix indicates a fixed 1.875 V output rather than the adjustable variant. Ensure the package type matches the required PCB layout constraints for the DSBGA-5 form factor before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.875 V rail is required from a 5.5 V input source. Compare against the adjustable version if variable output is needed. Consider the 350 mA current limit for load requirements. Evaluate thermal performance in the small package against higher current alternatives like the LM3671 if loads exceed available capacity.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3673 family of miniature step-down converters. It shares architectural similarities with other members like the LM3671 but differs in output configuration and current capability. The series targets ultra-small form factors for mobile electronics, distinguishing it from larger industrial regulators.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM3673TLX-ADJ/NOPB serves as a functional alternative if an adjustable output voltage is acceptable instead of the fixed 1.875 V setting. Verify pin compatibility and control loop stability when substituting between fixed and adjustable variants within the same series.