LM2597HVM-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597HVM-3.3/NOPB is a step-down switching voltage regulator from the Texas Instruments SIMPLE SWITCHER family, designed for high-voltage input applications. It operates with an input voltage range of 4.5 V to 60 V and provides a fixed output voltage of 3.3 V. The device delivers up to 500 mA of output current at a standard switching frequency of 150 kHz. Packaged in an SOIC-8 surface-mount format, it supports operation across an extended temperature range from -40°C to +125°C. Key functional parameters include a maximum static current of 5 mA and integrated thermal shutdown protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch eliminates the need for external components typically required in buck converter designs
• Fixed output voltage configuration ensures stable regulation without requiring external feedback resistors
• Built-in thermal shutdown circuitry protects the device against overheating during fault conditions or excessive load

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 3.3 V rails
• Pre-regulation stages for downstream linear regulators in high-input voltage environments
• Battery-powered equipment utilizing high-voltage source architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number includes the /NOPB suffix to confirm compliance with RoHS directives and absence of lead-based materials. Ensure the ordering code matches the SOIC-8 package variant, as other package options exist within the LM2597HV series. Confirm that the fixed 3.3 V output specification aligns with the target design requirements before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from inputs up to 60 V. Consider the 500 mA current limit for load capacity planning. Evaluate the SOIC-8 package for thermal dissipation needs relative to PCB layout constraints. Compare against adjustable variants if variable output voltage flexibility is necessary instead of a fixed rail.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2597HV series of SIMPLE SWITCHER power converters, which are optimized for high-input voltage buck applications. The series offers various output configurations including adjustable and fixed voltages. The 'M' designation indicates the SOIC-8 surface-mount package, distinguishing it from through-hole or larger power packages available in the same product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2597HVM-ADJ/NOPB (Adjustable output version)

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM2597HVM-3.3 support inverting topology?

No, the LM2597HVM-3.3 is configured as a standard buck (step-down) regulator. Inverting topology options are available in related parts such as the LM2574 series.

What is the maximum input voltage for this regulator?

The maximum input voltage rating for the LM2597HVM-3.3 is 60 V.