LM2598T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598T-ADJ/NOPB is a SIMPLE SWITCHER power converter featuring a 150-kHz fixed-frequency oscillator. It operates as a step-down voltage regulator with an input voltage range of 4.5V to 40V and delivers up to 1A output current. The device provides an adjustable output voltage from 1.23V to 37V using external resistors. It utilizes a TO-220-7 through-hole package, supports a junction temperature range of -40°C to +125°C, and includes internal thermal shutdown and current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 150-kHz fixed-frequency oscillator for simplified external component selection
• Internal thermal shutdown and current limit protection for robust operation under fault conditions
• Adjustable output voltage capability via external resistor network
• High efficiency design suitable for direct bus conversion applications

Voltage Regulators - DC DC Switching Regulators Applications

• Direct bus conversion systems
• Forward converters prior to the secondary synchronous rectifier
• Post-distribution regulation modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's official datasheet to confirm lead-free compliance and exact pinout configuration. Ensure the ordering part number matches the required package style and output adjustment type. Cross-reference the manufacturer's latest documentation to confirm active status and any recent engineering change notices affecting mechanical or electrical specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1A buck converter with through-hole mounting is required. The adjustable output variant allows flexibility for varying load requirements within the specified voltage range. Consider the thermal performance of the TO-220 package relative to the expected ambient temperature and heat dissipation constraints in the final enclosure design.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SIMPLE SWITCHER family of monolithic switching regulators. It shares core architecture with other members like the LM2596 and LM2599 but is optimized for 1A output current. The family is characterized by minimal external components and built-in protection features, targeting cost-sensitive power management designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598T-12/NOPB offers a fixed 12V output instead of adjustable. LM2596T-ADJ/NOPB provides higher 3A current capacity in a similar TO-220-5 package. Verify pin compatibility and thermal requirements when substituting.