LM3354MM-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM3354MM-3.3 is a CMOS switched capacitor DC/DC converter manufactured by National Semiconductor, now part of Texas Instruments. It functions as a regulated buck-boost charge pump regulator designed to maintain a stable output voltage regardless of input fluctuations relative to the target level. The device automatically steps up or steps down the input voltage to provide a fixed 3.3V output. It operates with a switching frequency of approximately 1MHz and supports an output current capability of up to 70mA. The component is housed in an 8-pin MSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automatically regulates output voltage by stepping up or stepping down input levels without requiring external inductors
• CMOS technology ensures low power consumption suitable for battery-powered applications
• Fixed 3.3V output configuration simplifies circuit design for positive voltage requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronics requiring stable voltage from varying cell levels
• Systems where inductor-free space-constrained designs are necessary
• Applications needing regulation across both boost and buck input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor assets were acquired by Texas Instruments. Confirm the specific suffix (e.g., NOPB) if environmental compliance or lead-free status is required for your assembly process. Ensure the package type matches your PCB footprint specifications before ordering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an inductor-less solution is preferred to save board space and reduce electromagnetic interference. It is appropriate for applications where the input voltage may fluctuate above and below the desired 3.3V output level. Consider the 70mA current limit when sizing for load requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM335x family of switched capacitor regulators. These devices are designed to replace traditional linear regulators or inductive switching converters in low-power scenarios. The MM suffix indicates an 8-pin MSOP package, distinguishing it from other pinout or thermal variants within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM3354MM-3.3/NOPB as a potential equivalent if lead-free compliance is mandatory. Verify that any substitute maintains the 70mA output current and 1MHz switching frequency characteristics to ensure compatibility with existing filter components.