LM2577MX-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577MX-12 is a fixed-output step-up voltage regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It provides a regulated 12V output with a maximum switch current of 3A. The device supports an input voltage range up to 40V and operates at a switching frequency of 52kHz. Packaged in an 8-pin SOIC (MSOP) surface-mount format, it integrates a 1.23V reference for precise regulation. The component is designed for boost, flyback, and forward converter topologies, offering high efficiency and thermal protection within an operating temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller simplifies design by requiring minimal external components
• Built-in thermal shutdown protects against overheating during fault conditions
• Fixed 12V output eliminates need for external feedback resistors
• High efficiency operation reduces power loss in step-up applications

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring voltage boosting
• Industrial control circuits with variable input sources
• Telecommunications equipment power supplies
• Automotive electronics utilizing 12V or 24V bus architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix matches the required package type and temperature rating. Confirm RoHS compliance status through official datasheets. Check for obsolescence notices as older revisions may be discontinued. Ensure supplier documentation aligns with Texas Instruments specifications for quality assurance.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12V output is required from a higher voltage source. Consider the 3A current limit for load requirements. Evaluate the SOIC package for PCB space constraints. Compare against adjustable variants if flexible output voltages are needed instead of fixed configurations.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the SIMPLE SWITCHER series focusing on ease of use and compact design. Complements other regulators like LM2576 for buck applications. Provides a robust solution for isolated and non-isolated DC-DC conversion needs in consumer and industrial markets.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2577SX-12/NOPB offers identical electrical performance in a TO-263 package. LM2577T-12 provides the same functionality in a TO-220 through-hole package. Verify pinout compatibility and thermal dissipation requirements when substituting packages.