LM2575HVS-15/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVS-15/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, designed for high-voltage input applications up to 60V. It delivers a fixed 15V output with a maximum continuous current of 1A. The device operates at a typical switching frequency of 52kHz and features an internal power switch rated for 3.2A peak current. It utilizes pulse-width modulation control mode and supports a wide input voltage range from 4V to 60V. The component is housed in a TO-263 (DDPAK-5) surface-mount package and is specified for operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of handling up to 3.2A peak current for robust performance under load variations.
• Fixed 15V output configuration eliminates the need for external feedback resistors, simplifying circuit design and reducing component count.
• Operates at a standard 52kHz switching frequency, allowing for the use of smaller passive components such as inductors and capacitors.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient step-down conversion from higher bus voltages.
• Pre-regulator stages for linear post-regulators in high-performance power architectures.
• Direct regulation from battery sources in automotive or industrial equipment where input voltage exceeds output requirements.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix 'NOPB' confirms compliance with RoHS standards and absence of antimony, arsenic, barium, cadmium, chromium, lead, mercury, and other restricted substances. Ensure the specific variant matches the required fixed 15V output specification, as the LM2575 family includes adjustable and other fixed voltage options. Confirm the package type corresponds to the TO-263 form factor for proper PCB footprint compatibility during procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 15V output is required from an input voltage ranging between 4V and 60V. It is suitable for designs needing up to 1A continuous load current without external pass transistors. Consider the thermal performance of the TO-263 package relative to the expected power dissipation. If variable output voltage is needed, the LM2575HVS-ADJ variant should be considered instead. Evaluate the 52kHz switching frequency against electromagnetic interference constraints in the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of SIMPLE SWITCHER regulators, which are known for their ease of use and high efficiency. The 'HV' designation indicates support for high input voltages up to 60V, distinguishing it from lower-voltage variants. The 'S' suffix denotes the TO-263 surface-mount package, while 'NOPB' signifies non-plumbum (lead-free) construction compliant with environmental directives. This series provides a cost-effective solution for medium-power DC-DC conversion tasks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575HVS-15/NOPB is the direct lead-free replacement for the discontinued LM2575HVS-15. For through-hole implementations, the LM2575T-15/NOPB serves as a pin-compatible alternative in the TO-220 package. Designers must verify thermal characteristics and pinout compatibility when substituting with non-TI equivalents or different package styles within the same functional family.