LM2577MX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577MX-ADJ is a SIMPLE SWITCHER step-up voltage regulator from Texas Instruments, designed for high-efficiency DC/DC conversion. It operates with an input voltage range of 3.5V to 40V and delivers up to 3A of output current. The device supports adjustable output voltages starting from 1.23V, utilizing a fixed 52kHz switching frequency. Packaged in the TO-263 (D2PAK) surface-mount format, it integrates internal feedback compensation and features thermal shutdown protection. This component functions as a boost, flyback, or forward converter suitable for various power management applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller simplifies design by eliminating external oscillator and compensation components
• Fixed 52kHz switching frequency allows for compact passive component selection
• Internal thermal shutdown protects against overheating under fault conditions
• Adjustable output voltage capability provides flexibility for diverse system requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring voltage boosting
• General-purpose DC/DC power supplies
• Industrial control power modules
• Telecommunications equipment power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and package variant when ordering, as the LM2577 series includes multiple pinout and thermal pad configurations. Confirm RoHS compliance status and ensure the selected part matches the required operating temperature range for your application environment. Cross-reference datasheet revision dates to guarantee compatibility with existing design files.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current step-up solution is needed without complex external control loops. Ensure the input voltage remains above the minimum threshold for stable regulation. Evaluate the thermal performance of the TO-263 package relative to the expected load current and ambient temperature to determine if additional heatsinking is necessary for long-term reliability.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2577 family of SIMPLE SWITCHER regulators, which are known for their ease of use and high efficiency. The MX suffix typically denotes a specific surface-mount package variation within the broader LM2577 product line, distinguishing it from through-hole or other SMD variants like the SX or T series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2577SX-ADJ/NOPB: Pin-compatible alternative with similar electrical characteristics and updated manufacturing standards.