LM2597HVN-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597HVN-3.3/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, operating at a fixed 150 kHz switching frequency. It provides a fixed 3.3 V output with a maximum load current of 500 mA. The device accepts an input voltage range of 4.5 V to 60 V and features a low quiescent current of 5 mA. Designed for high efficiency, it integrates a monolithic switching regulator with a 0.5 A internal switch. The component operates within a temperature range of -40°C to +125°C and is housed in an 8-pin PDIP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator with a 0.5 A internal power switch
• Fixed 150 kHz switching frequency enables the use of small passive components
• High efficiency operation reduces thermal management requirements
• Built-in thermal shutdown circuitry protects against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator circuits for linear regulators
• Battery-powered systems requiring efficient step-down regulation
• General-purpose power supplies with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm lead-free status and RoHS compliance as per the manufacturer's datasheet. Ensure the package type matches the design requirements, as the HVN variant typically utilizes a PDIP package while other variants may differ. Cross-reference the full part number with official Texas Instruments documentation to confirm availability and exact electrical specifications before finalizing procurement.

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. It is suitable for applications where moderate output current up to 500 mA is sufficient and space constraints allow for external inductor and diode selection. Consider alternative packages if surface-mount technology is preferred over through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2597HV series of SIMPLE SWITCHER power converters. The series is characterized by its ability to handle high input voltages and its fixed-frequency operation. The LM2597HV family includes adjustable and fixed-output versions, offering designers flexibility in creating efficient buck converter topologies for various industrial and commercial applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other LM2597HV variants with different output voltages or adjustment capabilities, such as LM2597HVM-ADJ/NOPB. For higher current requirements, consider the LM2596 series. Verify pin compatibility and thermal performance when substituting with similar buck regulators from Texas Instruments or other manufacturers.