LM2675M-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The UMW LM2675M-3.3 is a fixed-output buck switching regulator IC designed for step-down DC-DC conversion applications. It provides a stable positive output voltage of 3.3V with a maximum continuous output current capability of 1A. The device operates with a fixed internal switching frequency of 260kHz, enabling the use of compact external components. It features an operating junction temperature range from -40°C to +125°C and utilizes an 8-SOIC surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 3.3V output voltage regulation
• Integrated 1A power switch
• Non-synchronous rectification topology
• Wide input voltage range compatibility

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital circuits
• Battery-powered systems requiring efficient step-down conversion
• General-purpose DC-DC power supply modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer marking on the component body matches UMW specifications. Confirm the package type is 8-SOIC (SOP-8) with the specified pinout. Ensure the suffix indicates the fixed 3.3V output variant. Check for physical damage or bent pins upon receipt. Validate authenticity through official distributor channels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output at up to 1A is required. Consider the 260kHz switching frequency for inductor size trade-offs. Evaluate thermal performance given the 125°C junction limit. Compare against synchronous alternatives if higher efficiency at light loads is critical. Ensure input voltage exceeds the required output level significantly.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2675 series of SIMPLE SWITCHER power converters. It is functionally similar to Texas Instruments' LM2675 but manufactured by UMW. The series offers various fixed output voltages including 1.21V, 5V, and 12V variants. It serves as a cost-effective solution for medium-power buck converter designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements include TI LM2675M-3.3. Verify electrical parameters such as output voltage tolerance and switching frequency match before substitution. Ensure thermal characteristics and package dimensions are identical for board-level interchangeability.