LM2597M-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597M-ADJ/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, housed in an SOIC-8 surface-mount package. It operates as a buck or inverting switching regulator with a fixed switching frequency of 150 kHz. The device supports an input voltage range of 4.5 V to 40 V and delivers a maximum output current of 500 mA. The adjustable output voltage ranges from 1.23 V to 37 V. It functions within an operating temperature range of -40°C to +125°C and features a typical quiescent current of 5 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for simplified application circuitry
• Fixed 150 kHz internal oscillator eliminates the need for external timing components
• Built-in thermal shutdown and current limit protection for robust operation

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 (e.g., NOPB) to confirm lead-free status and RoHS compliance. Ensure the package type matches the PCB footprint requirements. Confirm the adjustable output configuration against fixed-voltage variants. Check the datasheet for recommended external component values to ensure stable operation at the desired load conditions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage up to 37 V is required with a 500 mA load capacity. It is suitable for designs needing high efficiency without complex control loops. Consider the SOIC-8 package for space-constrained applications. Verify that the input voltage does not exceed the 40 V absolute maximum rating.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2597 series of SIMPLE SWITCHER regulators. It shares architectural similarities with other members like the LM2596 but offers higher input voltage support. The family is known for reducing design time through integrated power switches and minimal external component counts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2597M-12/NOPB: Fixed 12V output variant. LM2597M-5.0/NOPB: Fixed 5V output variant. LM2597HVM-ADJ/NOPB: High-voltage adjustable variant supporting up to 60V input.