LM2598T-12/NOPB

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 output voltage of 12V at a maximum output current of 1A. The device integrates a 150kHz fixed-frequency oscillator and features internal frequency compensation for minimal external component requirements. It utilizes a TO-220-7 through-hole package, supporting operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a monolithic switching regulator designed for high-efficiency step-down conversion
• Includes internal frequency compensation to reduce the number of required external components
• Features a fixed 150kHz switching frequency for optimized inductor and capacitor sizing

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring buck conversion
• Pre-regulator circuits for switching regulators
• Efficient straight-through regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T' indicates the TO-220-7 through-hole package variant distinct from surface-mount versions. Confirm the '-12' designation corresponds to the fixed 12V output setting. Ensure compliance with RoHS standards as indicated by the NOPB suffix. Cross-reference the manufacturer part number against official datasheets to validate pinout and thermal specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust through-hole solution is required for 1A buck applications. The TO-220-7 package offers superior thermal dissipation compared to smaller surface-mount packages. Consider the 4.5V to 40V input range suitability for standard bus voltages. Evaluate the fixed 12V output constraint against system requirements to ensure compatibility without external feedback adjustments.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2598 family of SIMPLE SWITCHER regulators, which are known for ease of design and high efficiency. The family includes adjustable and fixed voltage variants across different packages such as TO-263 and TO-220. The LM2598 series is widely used in industrial and commercial applications where reliable DC-DC conversion is critical.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598SX-12/NOPB (Surface Mount TO-263 variant)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the switching frequency of the LM2598T-12/NOPB?

The device operates at a fixed switching frequency of 150 kHz.

Does the LM2598T-12/NOPB support adjustable output voltage?

No, the '-12' suffix indicates a fixed 12V output version. Adjustable versions use the '-ADJ' suffix.