LM2577S-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577S-ADJ is a SIMPLE SWITCHER step-up voltage regulator from Texas Instruments, designed for high-efficiency power conversion. It operates with an input voltage range of 3.5V to 40V and supports adjustable output voltages up to 60V. The device delivers a maximum output current of 3A at a typical switching frequency of 52kHz. Packaged in the TO-263 surface-mount format, it integrates a fixed-frequency oscillator and internal error amplifier. The component functions as a boost, flyback, or forward converter, featuring thermal shutdown and current limit protection for robust operation across industrial temperature ranges.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated fixed-frequency oscillator eliminates external timing components
• Internal error amplifier enables precise feedback control
• Thermal shutdown protects against overheating conditions
• Current limit circuitry safeguards against short circuits

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring voltage boosting
• Industrial control power supplies
• Telecommunications equipment DC-DC conversion
• Automotive electronics power regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm RoHS compliance and lead-free status. Confirm package variant matches design requirements. Check datasheet revisions for updated electrical characteristics. Ensure ordering information aligns with current manufacturing status. Validate supplier authenticity through authorized channels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring simple boost topology with minimal external parts. Consider the 52kHz switching frequency for EMI management. Evaluate thermal performance based on PCB layout and ambient conditions. Compare input voltage range against source availability. Assess load requirements against the 3A continuous current capability.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the SIMPLE SWITCHER family, offering simplified power design. The LM2577 series complements buck regulators like the LM2576. It provides a cost-effective solution for step-up applications. The TO-263 package facilitates efficient heat dissipation. Integration reduces bill of materials compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2577SX-ADJ/NOPB serves as a direct pin-compatible alternative with identical functionality. Verify package dimensions match existing footprints. Confirm electrical parameters remain within design tolerances. Review manufacturer documentation for any minor specification updates.