LM2575S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575S-12/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, housed in a TO-263-5 surface-mount package. 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 features a typical switching frequency of 58 kHz. Internal specifications include a maximum static current of 10 mA and a quiescent operating current of 5 mA. The component supports an extended industrial temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated buck topology with built-in frequency compensation and fixed-frequency oscillator
• Built-in thermal shutdown and per-cycle current limiting for fault protection
• External shutdown pin capability for low standby power consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient step-down conversion
• Pre-regulator circuits for switching regulators
• Efficient linear regulator replacements to reduce heat dissipation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as defined by Texas Instruments. Confirm the TO-263-5 package variant matches the required PCB footprint. Ensure the fixed 12 V output specification aligns with the target circuit design requirements before procurement.

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. The TO-263-5 package is suitable for surface-mount assembly where moderate power handling is needed. Consider the 58 kHz switching frequency for inductor selection and EMI management compared to other variants in the LM2575 family.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of monolithic integrated circuits designed as simple-to-use step-down switching regulators. The series offers fixed output voltages including 3.3 V, 5 V, 12 V, and 15 V, alongside adjustable versions. The LM2575S-12/NOPB specifically utilizes the surface-mount TO-263-5 package, distinguishing it from through-hole TO-220 variants like the LM2575T-12/NOPB.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575S-12/NOPB is the direct lead-free/RoHS-compliant replacement for the older LM2575S-12 model.