LM2577M-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577M-ADJ/NOPB is a SIMPLE SWITCHER® step-up voltage regulator from Texas Instruments, housed in a TO-263 (D2PAK) surface-mount package. It supports boost, flyback, and forward topologies with an adjustable output voltage range of 1.23 V to 60 V. The device delivers a maximum switch current of 3 A and operates at a typical switching frequency of 52 kHz. It functions within an input voltage range of 3.5 V to 40 V and maintains operation across a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller for simplified design
• Internal fixed-frequency oscillator for stable regulation
• Built-in thermal shutdown protection
• Adjustable output voltage capability

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC power supplies
• Positive-to-negative converter circuits
• Battery-powered systems requiring voltage boosting

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'M' against the manufacturer's official datasheet to confirm the exact package variant and pinout configuration. Ensure the component meets RoHS compliance standards as indicated by the NOPB designation. Cross-reference the part number with the latest TI documentation to confirm availability status and any potential obsolescence notices before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current step-up solution is required for industrial or automotive environments. The wide input voltage range accommodates various battery types, while the adjustable output allows flexibility for different load requirements. Consider the thermal performance of the TO-263 package for heat dissipation needs in enclosed designs.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2577 series of SIMPLE SWITCHER regulators, known for their ease of use and minimal external component count. The series includes fixed-voltage and adjustable variants, catering to diverse power conversion needs. The LM2577M-ADJ/NOPB specifically offers the adjustability feature within a surface-mount format suitable for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other LM2577 series adjustable variants such as LM2577SX-ADJ/NOPB, ensuring identical electrical characteristics and pin compatibility. Verify that any substitute maintains the same TO-263 package dimensions and thermal properties to fit existing board layouts without modification.