LM2675LD-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2675LD-3.3 is a fixed-output step-down switching regulator from the SIMPLE SWITCHER series, manufactured by National Semiconductor. It provides a fixed 3.3V output with a maximum load current of 1A. The device operates within an input voltage range of 8V to 40V and utilizes a 260kHz switching frequency. It is housed in a compact 16-pin WSON package (WSON-16) designed for surface mount applications. The component supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-efficiency step-down DC-DC converter topology
• Fixed 3.3V output voltage configuration
• Built-in thermal shutdown protection against overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Power supply stages for remotely controlled vehicles
• Voltage regulation for video camera systems
• General-purpose 1A step-down power conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin, as National Semiconductor was acquired by Texas Instruments. Confirm the specific suffix indicates the WSON-16 package and 3.3V fixed output. Check RoHS compliance status, as older National Semiconductor batches may not meet current environmental standards. Ensure the part number matches the exact electrical specifications required for the target circuit design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V rail is needed from an 8V to 40V input source. It is suitable for space-constrained designs due to the small WSON-16 footprint. Consider the 1A current limit and 260kHz frequency for filtering requirements. Verify compatibility with the host system's thermal management capabilities given the 125°C maximum junction temperature rating.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2675 belongs to the SIMPLE SWITCHER family of high-efficiency step-down regulators. This series includes variants with different output voltages and packages, such as the LM2675M and LM2675N. The LD suffix typically denotes the specific WSON package variant. The family is known for requiring minimal external components compared to traditional PWM controllers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2675LD-5.0/NOPB: Same package and controller, but fixed 5.0V output. LM2675LD-ADJ/NOPB: Same package and controller, but adjustable output voltage.