LM2597N-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597N-ADJ/NOPB is a step-down switching regulator from Texas Instruments, operating at a fixed 150 kHz frequency. It supports an input voltage range of 4.5 V to 40 V and delivers up to 500 mA output current. The adjustable output voltage spans from 1.2 V to 37 V. Designed for surface-mount or through-hole integration in SOIC-8 or PDIP-8 packages, it functions within an ambient 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 150 kHz internal oscillator reduces required passive component count
• Built-in thermal shutdown protects against excessive junction temperatures
• Internal frequency compensation simplifies circuit design and layout

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient buck conversion
• Pre-regulator stages for linear post-regulators
• Battery-powered equipment utilizing step-down topology
• Efficient on-card regulation for logic supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify package variant (SOIC vs PDIP) matches PCB footprint requirements. Confirm RoHS compliance status via manufacturer datasheet. Ensure ordering suffix aligns with specific tape-and-reel or tube packaging needs. Cross-reference pinout diagrams during schematic capture to prevent orientation errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when input voltages exceed 36 V but remain below 40 V. Choose over LM2596 if higher input tolerance is necessary. Consider LM2596HV only if input exceeds 60 V. Evaluate thermal performance based on expected load current and ambient conditions before finalizing selection.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the SIMPLE SWITCHER family, known for integrated power switches and simplified design processes. It serves as a high-voltage variant within the broader LM2597 series, offering robust performance for industrial applications where standard regulators might fail due to elevated input potentials.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2597M-ADJ/NOPB offers identical electrical specifications in a surface-mount SOIC-8 package. LM2596N-ADJ/NOPB provides similar functionality but with a lower maximum input voltage rating of 40 V. Verify pin compatibility and thermal characteristics when substituting.