LM2575M-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575M-12/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a monolithic integrated circuit for step-down (buck) switching regulator applications. It provides a fixed 12 V output with a maximum load current of 1 A. The device operates within an input voltage range of 4.75 V to 40 V and utilizes a buck topology. It features a typical switching frequency of 52 kHz and supports operation across a temperature range of -40°C to +125°C. The component is housed in a PowerPAD™ TO-263 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions required for a buck switching regulator, including a fixed-frequency oscillator and internal frequency compensation.
• Includes built-in thermal shutdown and cycle-by-cycle current limiting to ensure system safety under fault conditions.
• Supports external shutdown control, allowing for low standby current consumption when the device is disabled.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient step-down conversion
• Pre-regulators for linear post-regulator circuits
• Battery-powered systems needing high-efficiency voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'M' indicates the correct package variant, typically associated with the PowerPAD TO-263 form factor. Confirm that the 'NOPB' designation ensures compliance with RoHS standards and absence of lead-based materials. Cross-reference the manufacturer datasheet to validate the exact pinout and thermal pad requirements for your PCB layout design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from an input voltage up to 40 V. It is suitable for designs prioritizing simplicity and minimal external component count over adjustable output flexibility. Ensure the application can accommodate the standard switching frequency and that the thermal performance of the TO-263 package meets the heat dissipation needs of the expected load current.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of SIMPLE SWITCHER regulators, which are designed as direct replacements for traditional three-terminal linear regulators. The series offers significant reductions in size and cost while eliminating the need for large external heat sinks in many applications. The LM2575M variant specifically targets surface-mount assembly requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2575S-12/NOPB and LM2575T-12/NOPB, provided the package difference (TO-263 vs. TO-220) is acceptable. For higher current requirements, consider the LM2575HV series variants, though input voltage specifications differ.