LM2595T-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2595T-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER step-down switching voltage regulator in a TO-220 ZIP-5 package. It provides a fixed 3.3V output with a maximum current of 1A. The device operates from an input voltage range of 4.5V to 40V at a fixed 150kHz switching frequency. It features internal frequency compensation and a fixed-frequency current-mode control architecture for rapid transient response.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch rated for 1A continuous load current
• Fixed 150kHz switching frequency eliminates need for external oscillator components
• Internal frequency compensation simplifies design by reducing external component count
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free status and RoHS compliance per manufacturer specifications. Confirm the 'T' designation indicates the TO-220 ZIP-5 through-hole package variant. Ensure the '-3.3' identifier matches the required 3.3V fixed output voltage. Cross-reference the full part number against official TI databases to validate availability and revision history before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current buck converter is needed for through-hole assembly. The fixed 150kHz frequency allows for smaller passive components compared to lower-frequency alternatives. The wide input voltage range supports various supply rails. Consider thermal management requirements due to the linear-like dissipation characteristics inherent to non-synchronous designs under heavy loads.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the LM2595 series, which offers higher current capability than the LM2594 but lower than the LM2596. It shares the SIMPLE SWITCHER architecture with integrated feedback and power switches. The TO-220 ZIP-5 package provides superior thermal performance compared to surface-mount variants, suitable for applications where board space is less constrained than heat dissipation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2595T-ADJ/NOPB: Adjustable output version using the same package and pinout. LM2596T-3.3/NOPB: Higher current (3A) alternative with similar topology but different thermal and footprint considerations.