LM3354MM-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3354MM-1.8/NOPB is a regulated buck-boost switched capacitor DC/DC converter manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 1.8 volts with a maximum output current of 90 mA. The device operates at a switching frequency of 1000 kHz and functions within an ambient temperature range of -40°C to +85°C. It utilizes a 10-VSSOP surface-mount package. This component is classified as obsolete and has been removed from active manufacturing.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated buck-boost topology enables regulation across input voltages both above and below the output level
• Switched capacitor architecture eliminates the need for external inductors
• Fixed 1.8V output configuration simplifies circuit design

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring stable voltage from varying cell levels
• Systems needing step-up or step-down conversion without magnetic components
• Space-constrained designs utilizing small surface-mount packages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

This component is officially listed as obsolete and removed from production by Texas Instruments. Verify availability through authorized distributors for surplus stock only. Confirm lot dates and authenticity carefully, as no new units are manufactured. Cross-reference with current replacement parts for long-term supply security.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part only if legacy compatibility is required. For new designs, consider modern equivalents offering improved efficiency or extended lifecycle support. Ensure the 90mA current limit meets load requirements. Verify that the 10-VSSOP footprint matches the PCB layout constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM3354 series comprises various fixed-output voltage variants of the same switched regulator core. The MM suffix indicates the VSSOP package type. The NOPB designation confirms lead-free and RoHS compliance. This specific variant targets applications requiring a precise 1.8V rail from fluctuating power sources.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Official substitutes include other LM3354 variants with different output voltages such as LM3354MM-3.3/NOPB or LM3354MM-5.0/NOPB if voltage requirements differ. Check Texas Instruments documentation for direct pin-compatible replacements or updated generations.