LM2575T-15/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-15/NOPB is a monolithic integrated circuit from the SIMPLE SWITCHER family, functioning as a step-down switching voltage regulator. It provides a fixed 15V output with a maximum load current of 1A. The device operates within an input voltage range of 4V to 40V and utilizes a fixed 52kHz internal oscillator. Designed for through-hole mounting in a TO-220-5 package, it features ±4% output voltage tolerance under specified conditions. Key protection mechanisms include thermal shutdown and per-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions required for a buck converter topology, including a fixed-frequency oscillator and internal frequency compensation.
• Offers high efficiency compared to linear regulators, significantly reducing heat sink requirements or eliminating them entirely in many applications.
• Includes external shutdown capability with low standby current consumption.
• Utilizes standard off-the-shelf inductors optimized for the series to simplify power supply design.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient replacement for three-terminal linear regulators in systems requiring lower thermal dissipation.
• Pre-regulator stages for downstream switching regulators.
• Direct regulation from bus voltages exceeding the required output level.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number suffix matches the required package type and lead-free status. Confirm the manufacturer source aligns with original equipment manufacturer specifications to ensure component authenticity. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 15V output is required with up to 1A load capacity. Ensure the input voltage does not exceed the 40V maximum rating. Consider the TO-220-5 through-hole package constraints for PCB layout. Evaluate thermal performance based on the expected voltage drop and ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 series of SIMPLE SWITCHER regulators. The 'T' suffix indicates a through-hole package variant, specifically TO-220-5. The 'NOPB' designation signifies a lead-free and RoHS-compliant version without boron doping. This series is designed to provide a simple, cost-effective solution for DC-DC conversion tasks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-15