LM2577T-15

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577T-15 is a DC-DC switching regulator from the Texas Instruments SIMPLE SWITCHER® series, designed for boost, flyback, and forward converter topologies. It provides a fixed output voltage of 15V with a maximum switch current capability of 3A. The device operates with an input voltage up to 40V and features a fixed switching frequency of 52kHz. It is housed in a TO-220-5 through-hole package and supports an operating junction temperature range from -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller supporting boost, flyback, and forward converter configurations
• Fixed 15V output configuration with high current switching capability
• Internal oscillator sets a constant 52kHz switching frequency

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power supply systems requiring isolated or non-isolated regulated outputs
• Battery-powered equipment utilizing step-up conversion architectures
• General-purpose DC-DC conversion modules for embedded electronics

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the package type matches the required TO-220-5 form factor. Ensure the output voltage suffix corresponds to the 15V requirement. Check for obsolescence status as older SIMPLE SWITCHER® variants may have limited availability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 15V output is required from a variable or higher input source. The 3A switch current rating suits moderate power applications. Consider thermal management requirements due to the linear regulator-like dropout characteristics inherent to this topology. Verify that the 52kHz frequency aligns with electromagnetic interference constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2577 family of SIMPLE SWITCHER® regulators, which are known for ease of design implementation. The 'T' suffix indicates a through-hole package variant, while the '-15' denotes the fixed 15V output version. It serves as a versatile solution for various converter topologies within the broader Texas Instruments power management portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2577T-ADJ: Adjustable output version of the same series.

Voltage Regulators - DC DC Switching Regulators FAQ

What converter topologies does the LM2577T-15 support?

It supports boost, flyback, and forward converter topologies.

What is the switching frequency of the LM2577T-15?

The internal oscillator is set to a fixed frequency of 52kHz.