LM2597N-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597N-5.0/NOPB is a step-down switching regulator from the Texas Instruments SIMPLE SWITCHER family, housed in an 8-pin PDIP package. It provides a fixed 5 V output with a maximum load current of 500 mA. The device operates with an input voltage range of 4.5 V to 40 V and utilizes a fixed 150 kHz internal oscillator. It features a shutdown mode that reduces quiescent current to 80 µA and includes thermal shutdown protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch rated for 3 A peak current
• Fixed 150 kHz internal oscillator for minimal external components
• Shutdown pin capability for low standby power consumption
• Built-in thermal shutdown circuitry for overload protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for linear post-regulators
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' confirms the PDIP through-hole package variant rather than surface-mount options. Confirm the 'NOPB' designation indicates lead-free construction and RoHS compliance. Ensure the datasheet revision matches the required design specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a through-hole solution is required for a 5 V output at up to 500 mA. It is suitable for applications where a fixed 150 kHz frequency allows for smaller passive components compared to lower-frequency regulators. Consider the thermal performance of the PDIP package under high ambient temperatures or continuous full-load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2597 series of adjustable and fixed-output step-down converters. It serves as a drop-in replacement for older discrete solutions or other legacy regulators requiring similar electrical characteristics but with integrated switching capabilities and simplified external component requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596-5.0/NOPB offers identical electrical performance in a TO-220 package. LM2597HV-5.0/NOPB supports higher input voltages up to 60 V. LM2597M-5.0/NOPB provides the same functionality in a surface-mount SOIC-8 package.