LM2598SX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598SX-ADJ/NOPB is a SIMPLE SWITCHER step-down switching regulator from Texas Instruments. It operates with an input voltage range of 4.5 V to 40 V and delivers up to 1 A output current. The device features an adjustable output voltage, typically ranging from 1.23 V to 37 V, controlled by external resistors. It integrates a fixed-frequency oscillator operating at approximately 150 kHz. The component is housed in a surface-mount TO-263 (D2PAK) package and supports operation across a temperature range of -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 and a fixed-frequency oscillator for simplified design.
• Features thermal shutdown and current limit protection for robust operation under fault conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for switching regulators
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'SX' confirms the surface-mount TO-263 package variant. Confirm 'NOPB' indicates lead-free and RoHS compliance. Ensure the 'ADJ' designation matches the requirement for an adjustable output voltage rather than a fixed version. Cross-reference the manufacturer part number with official datasheets to validate pinout and electrical specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage is required within a 4.5 V to 40 V input range. It is suitable for applications needing up to 1 A continuous current with high efficiency. Consider the TO-263 package for adequate thermal dissipation without additional heatsinking in moderate load scenarios. Verify that the 150 kHz switching frequency aligns with electromagnetic interference constraints and passive component size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2598 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2596 but offers optimized performance for specific current and voltage ranges. The family is known for reducing design complexity through integrated control circuitry and minimal external component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598SX-ADJ/NOPB is functionally equivalent to LM2598SX-ADJ. Check for updated revisions or alternative packages such as TO-220 variants if through-hole mounting is preferred.