LM2598T-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598T-12/NOPB is a SIMPLE SWITCHER® step-down switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 4.5V to 40V and provides a fixed 12V output at up to 1A load current. The device utilizes a 150kHz switching frequency and features internal compensation for simplified design. It is housed in a TO-220-7 package suitable for through-hole mounting, supporting a junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch rated for 3A peak current capability
• Internal frequency compensation simplifies external component requirements
• Fixed 12V output option eliminates external feedback resistor networks
• Thermal shutdown and current limit protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring buck conversion
• Pre-regulation stages for linear post-regulators
• Battery-powered systems needing efficient voltage step-down
• Industrial control equipment power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the datasheet to confirm lead-free compliance and exact pinout configuration. Ensure the TO-220-7 package variant matches the intended PCB footprint and thermal management strategy. Cross-reference the manufacturer part number with official TI documentation to avoid counterfeit components or incorrect revisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a high-voltage input rail up to 40V. The through-hole TO-220-7 package is appropriate for applications prioritizing ease of assembly and robust thermal dissipation over compact surface-mount solutions. Consider the 1A output limit when sizing external inductors and capacitors for the target load profile.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2598 family of SIMPLE SWITCHER power converters. It shares core architecture with other variants like the LM2596 and LM2599 but differs in output current ratings and package options. The 'T' indicates a through-hole package, while '12' specifies the fixed 12V output voltage setting within the series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598T-12/NOPB serves as a direct replacement for older National Semiconductor versions. For higher current needs, consider the LM2599 series. Surface-mount alternatives include the LM2598SX-12/NOPB in TO-263 packages.