LM2575N-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575N-5.0/NOPB is a monolithic integrated circuit step-down switching voltage regulator from the Texas Instruments SIMPLE SWITCHER family, housed in an 8-pin MDIP package. It provides a fixed 5.0V output with a maximum load current of 500mA. The device operates with an input voltage range of 4V to 40V and features a typical switching frequency of 52kHz. Key electrical specifications include a quiescent current of 5mA, an efficiency of approximately 77%, and an output voltage accuracy of ±4%. It supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions for buck topology switching regulation within a single IC
• Includes internal fixed-frequency oscillator and built-in frequency compensation
• Features thermal shutdown protection and per-cycle current limiting for fault safety

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC step-down power supplies
• Pre-regulator circuits for linear regulators
• Efficient battery-powered systems requiring voltage reduction

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' confirms the through-hole MDIP-8 package variant rather than surface-mount or TO-220 versions. Confirm the '-5.0' designation matches the required 5V fixed output. Ensure the 'NOPB' suffix indicates lead-free and RoHS compliance status as specified by the manufacturer's current documentation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a moderate 500mA output current is sufficient and through-hole mounting is preferred for mechanical stability. It serves as a direct replacement for standard three-terminal linear regulators to reduce heat dissipation requirements. Consider the 52kHz switching frequency for balancing component size against electromagnetic interference levels.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of SIMPLE SWITCHER regulators, designed to replace traditional linear regulators for improved efficiency. The series offers various fixed voltage options and adjustable versions. The LM2575N variant specifically utilizes the MDIP package, distinguishing it from the SMD (LM2575S) and TO-220 (LM2575T) packages within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements include other LM2575N variants with different fixed voltages such as LM2575N-3.3/NOPB or LM2575N-12/NOPB. For higher current needs, consider the LM2576 series, though pinouts may differ.