LM2595S-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2595S-3.3/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 150-kHz step-down voltage regulator. It provides a fixed 3.3 V output with a maximum current of 1 A. The device accepts an input voltage range of 4.5 V to 40 V and operates within a junction temperature range of -40 °C to +125 °C. Housed in a TO-263 (D2PAK) surface-mount package, it integrates a 1-A switch and requires minimal external components for implementation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 1-A power switch eliminates the need for external protection diodes
• Fixed 3.3-V output option simplifies design by reducing external component count
• Internal frequency compensation ensures stability without additional complex circuitry
• Thermal shutdown and current limiting protect against overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic circuits
• Pre-regulation stages for downstream linear regulators
• Battery-powered systems requiring efficient voltage stepping

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB confirms lead-free and RoHS compliance per Texas Instruments specifications. Confirm the package designation matches the required TO-263 footprint for PCB layout compatibility. Ensure the fixed 3.3 V output variant aligns with the target system voltage requirements rather than adjustable models.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required at up to 1 A load current. It is suitable for designs prioritizing simplicity over adjustable output flexibility. Consider the 150 kHz switching frequency for trade-offs between component size and electromagnetic interference. Verify input voltage does not exceed the 40 V maximum rating under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2595 series of SIMPLE SWITCHER converters, which are designed for high-efficiency DC-DC buck applications. The series includes adjustable and fixed voltage variants, offering a balance of performance and ease of use for general-purpose power management tasks in industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2595S-3.3/NOPB serves as a direct replacement for older National Semiconductor versions of the same part number. Cross-reference with LM2595SX-3.3/NOPB if tape-and-reel packaging is preferred over tube packaging, noting that the electrical characteristics remain identical.