LM2597N-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597N-5.0/NOPB is a step-down switching voltage regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with an input voltage range of 4.5 V to 40 V and provides a fixed 5.0 V output at up to 500 mA. The device utilizes a buck topology with a typical switching frequency of 150 kHz. Designed for surface-mount or through-hole applications in SOIC-8 or PDIP-8 packages, it functions within a temperature range of -40 °C to +125 °C. Key electrical parameters include a maximum quiescent current of 5 mA and an efficiency of approximately 82% under standard conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller for simple external component selection
• Fixed internal switching frequency eliminates need for external oscillators
• Built-in thermal shutdown and current limiting protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator stages for linear post-regulators
• Standard 5V logic power supply generation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific package variant (SOIC-8 vs PDIP-8) matches the target PCB footprint, as the base part number may require suffix differentiation for physical form factor. Confirm RoHS compliance status via the official datasheet revision history. Ensure ordering documentation explicitly references the complete manufacturer part number to avoid ambiguity between similar series components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from inputs up to 40V with moderate current demands. The 150kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider thermal dissipation requirements for the chosen package style, as power loss increases with higher input-to-output voltage differentials and load currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2597HV series of SIMPLE SWITCHER regulators, designed for high-voltage input applications. It serves as a robust alternative to traditional linear regulators in systems requiring efficient step-down conversion. The series is widely recognized for its simplicity and reliability in industrial and commercial power management designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2596N-5.0/NOPB offers similar functionality but typically supports lower input voltage ranges. LM2597M-5.0/NOPB provides the same electrical specifications in a surface-mount SOIC-8 package instead of the through-hole configuration.