LM2597M-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597M-3.3/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 150 kHz step-down voltage regulator. It delivers a fixed 3.3 V output with a maximum current of 0.5 A. The device operates within an input voltage range of 4.5 V to 40 V and supports both buck and inverting topologies. It is housed in an SOIC-8 surface-mount package and functions reliably across a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller simplifies design by requiring only external pass transistor, diode, and filter components.
• Fixed internal switching frequency of 150 kHz allows for the use of small passive components.
• Includes thermal shutdown circuitry to protect the device during overtemperature conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• On-card regulation for boards with high current demands
• Standard 5-V supplies where higher voltages are available

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm RoHS compliance and lead-free status. Ensure the ordering part number matches the required output voltage configuration. Confirm that the SOIC-8 package variant aligns with your PCB footprint requirements before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output at up to 0.5 A is required from an input voltage between 4.5 V and 40 V. Consider the LM2597 series for designs needing simplified topology with minimal external components. Evaluate thermal performance based on expected load currents and ambient temperatures within the specified operating range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2597 family of SIMPLE SWITCHER converters, designed for efficient step-down voltage regulation. The series is characterized by its ease of use and robust protection features, making it suitable for various industrial and commercial applications requiring reliable DC-DC conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other variants within the LM2597 family with different fixed output voltages or adjustable versions like the LM2597M-ADJ/NOPB. Cross-reference pinouts and electrical specifications to ensure compatibility with existing circuit designs.