LM2595SX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2595SX-12/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, manufactured under the National Semiconductor brand lineage. It operates as a buck converter with a fixed 12 V output and supports up to 1 A load current. The device accepts an input voltage range of 4.5 V to 40 V and switches at a frequency of 150 kHz. Packaged in a surface-mount TO-263-5 (D2PAK) format, it functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch eliminates the need for external high-voltage components.
• Fixed internal switching frequency reduces external component count and size.
• Built-in thermal shutdown protects against excessive junction temperatures.
• Includes cycle-by-cycle current limiting for overload protection.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for distributed power systems
• Pre-regulator stages for switching regulators
• Efficient buck conversion for battery-powered equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation on the datasheet, as the part originates from National Semiconductor but is currently managed by Texas Instruments. Confirm the suffix 'NOPB' indicates lead-free and RoHS compliance. Ensure the package type matches the required TO-263-5 footprint for your PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from a wide input voltage range. It is suitable for designs prioritizing simplicity and low external component counts over adjustable output flexibility. Consider the thermal performance of the D2PAK package for heat dissipation requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2595 series of SIMPLE SWITCHER power converters. These devices are designed to simplify the design of step-down switching regulators while maintaining high efficiency. The series includes adjustable and fixed voltage versions, offering a robust solution for general-purpose power management applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2595S-12/NOPB and LM2595S-12. Verify pin compatibility and thermal characteristics before substitution.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for this regulator?

The maximum input voltage is 40 V.

Does this device support adjustable output voltage?

No, the LM2595SX-12/NOPB provides a fixed 12 V output. An adjustable version is available as LM2595SX-ADJ/NOPB.