LM2577T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577T-ADJ is a SIMPLE SWITCHER power regulator IC manufactured by Texas Instruments, designed for boost, flyback, and forward converter topologies. It features an adjustable output voltage starting from 1.23V, with a maximum switch voltage rating of 60V. The device supports a continuous switch current of 3A and operates within an input voltage range of 3.5V to 40V. It utilizes a fixed switching frequency of 52kHz and provides a single positive output. The component is housed in a TO-220-5 package with formed leads for through-hole mounting and functions across a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller supporting boost, flyback, and forward converter configurations
• Fixed internal switching frequency eliminates the need for external timing components
• Built-in oscillator ensures precise duty cycle control and stable regulation
• Thermal shutdown protection safeguards the device during overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring step-up conversion
• Battery-powered equipment utilizing boost topology
• Negative voltage generation circuits using flyback configuration
• General-purpose DC-DC conversion modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity as this part number is obsolete and no longer in production. Confirm that replacement units are parameter-equivalent alternatives from authorized sources. Ensure the substitute maintains identical pinout compatibility and electrical specifications to guarantee seamless integration into existing designs without circuit modification.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring robust 3A current capability in a through-hole package. The adjustable output feature allows flexibility in setting specific voltage levels via external resistors. Consider the 52kHz switching frequency when designing passive components to balance efficiency and size constraints against electromagnetic interference requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2577 series of SIMPLE SWITCHER regulators, which are known for simplifying power supply design. The series includes various fixed and adjustable output variants. The LM2577T-ADJ specifically targets designs needing higher input voltages compared to lower-voltage counterparts, offering versatility in industrial and commercial power management solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2577T-ADJ/LF03 is a confirmed parameter-equivalent alternative available from Texas Instruments.