LM3673TLX-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3673TLX-1.2/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, designed for portable applications requiring high efficiency in a minimal footprint. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 1.2 V at a maximum continuous output current of 350 mA. The device integrates a 2 MHz switching frequency to allow the use of small external components. It features a DSBGA-5 package (5-WFBGA, 1.41x1.08 mm) and supports operation across a temperature range of -30°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for improved power conversion efficiency within a miniature form factor.
• Utilizes a fixed 2 MHz switching frequency to minimize the size of required external inductors and capacitors.
• Supports low input voltage operation starting from 2.7 V, suitable for single-cell battery powered systems.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics such as smartphones and tablets
• Personal digital assistants (PDAs) and media players
• Battery-powered embedded systems requiring compact power regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the specific fixed output voltage variant required, as the LM3673 family includes adjustable and other fixed voltage options. Confirm the package designation corresponds to the DSBGA-5 footprint in your PCB layout. Ensure the component meets RoHS compliance standards if mandated by your assembly specifications. Cross-reference the manufacturer part number with official distributor catalogs to confirm current production status and availability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2 V output is needed with a maximum load current of 350 mA. It is appropriate for designs constrained by board space due to its small DSBGA-5 package. Consider this part over adjustable variants if system stability and simplified design are priorities. Ensure the application input voltage remains within the 2.7 V to 5.5 V range for optimal performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3673 series of high-efficiency step-down converters from Texas Instruments. The series is engineered for space-constrained portable applications. The 'NOPB' suffix indicates lead-free construction and compliance with RoHS directives. The 'TLX' designation typically refers to the reel packaging format used for surface-mount assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3673TL-ADJ/NOPB: Offers adjustable output voltage instead of fixed 1.2 V; requires external feedback resistors. LM3673TLX-1.8/NOPB: Provides a different fixed output voltage (1.8 V) while maintaining identical pinout and electrical characteristics.