LM2597HVM-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597HVM-3.3/NOPB is a SIMPLE SWITCHER step-down voltage regulator manufactured by Texas Instruments, formerly National Semiconductor. It operates at a fixed switching frequency of 150 kHz and delivers an output current of 500 mA. The device accepts an input voltage range from 4.5 V to 60 V and provides a fixed 3.3 V output. It features internal compensation for reduced external component count and includes thermal shutdown protection. The unit is housed in an 8-pin SOIC package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch eliminates the need for external blocking diodes
• Fixed 150 kHz switching frequency allows use of small inductors and capacitors
• Internal frequency compensation simplifies design and reduces component count
• Thermal shutdown circuitry protects the device during overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital signal processors
• Battery-powered systems requiring efficient step-down conversion
• General-purpose power supplies with wide input ranges
• Pre-regulation for downstream linear regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix /NOPB confirms lead-free and RoHS compliance status as per manufacturer specifications. Confirm the package type matches the required PCB footprint. Ensure the fixed 3.3 V output variant aligns with system voltage requirements, as adjustable versions exist within the same family. Cross-reference the manufacturer part number against official distribution channels to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from a high-voltage input source up to 60 V. The 500 mA output current capability suits moderate load applications. The fixed frequency operation aids in EMI filtering design. Consider the SOIC package constraints for thermal dissipation. Verify that the input voltage range covers the minimum and maximum supply conditions of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2597HV series of SIMPLE SWITCHER regulators. It represents the fixed-output variant of the broader LM2597 family, which also includes adjustable and other fixed voltage options. The series is characterized by high efficiency and minimal external component requirements. It serves as a cost-effective solution for DC-DC conversion in industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2597HVM-ADJ/NOPB offers adjustable output voltage instead of fixed 3.3 V. LM2596HVM-3.3/NOPB provides similar functionality but may differ in switching frequency or current rating. Verify electrical parameters and pin compatibility before substitution.