LM2577SX-ADJ/S5001344

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577SX-ADJ/NOPB is a SIMPLE SWITCHER step-up voltage regulator from Texas Instruments, housed in a TO-263-5 surface-mount package. It supports boost and flyback topologies with an adjustable output voltage range of 1.23V to 60V (switch). The device delivers a maximum output current of 3A and operates at a switching frequency between 48kHz and 56kHz. It functions within an extended temperature range of -40°C to +125°C TJ and accepts input voltages up to 40V.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch for simplified circuit design
• Internal frequency compensation minimizes external component count
• Built-in thermal shutdown protects against overheating
• Adjustable output voltage via single external resistor

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power systems
• Battery-powered applications
• DC-to-DC conversion modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout and electrical tolerances. Ensure the ordering part number matches the required package variant and RoHS compliance status. Cross-reference datasheet revisions to validate performance parameters before integration into final designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for high-efficiency step-up regulation requiring up to 3A load current. The TO-263-5 package provides adequate thermal dissipation for moderate power levels. Verify that the required output voltage falls within the adjustable range and that the input source does not exceed the 40V absolute maximum rating.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2577 family of SIMPLE SWITCHER regulators, designed for straightforward implementation of non-isolated DC-DC converters. The series offers fixed and adjustable output options, providing designers with flexibility for various voltage transformation needs while maintaining high efficiency and low external component requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2577SX-ADJ/NOPB serves as a direct functional equivalent for legacy LM2577SX-ADJ units. Both parts share identical electrical characteristics and pin configurations, allowing for drop-in replacement in existing designs without schematic modifications.