LM2598SX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598SX-3.3/NOPB is a SIMPLE SWITCHER® fixed step-down switching regulator from Texas Instruments, housed in a TO-263 (D2PAK) surface-mount package. It accepts an input voltage range of 4.5 V to 40 V and provides a fixed 3.3 V output at up to 1 A. The device operates with a typical switching frequency of 150 kHz and supports junction temperatures from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch eliminates the need for external components typically required in discrete designs.
• Internal frequency compensation simplifies circuit design and reduces component count.
• Built-in thermal shutdown protects the device against excessive temperature conditions.

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'SX' confirms the tape-and-reel packaging format rather than tube or cut tape. Confirm the '-3.3' designation matches the required fixed output voltage. Ensure the 'NOPB' indicates lead-free and RoHS compliance status as specified by the manufacturer.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3 V output is required within a 4.5 V to 40 V input range. The TO-263 package offers higher current handling compared to smaller SOT packages. Consider the 150 kHz switching frequency for balancing efficiency and passive component size.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2598 family of SIMPLE SWITCHER regulators. It shares the same internal architecture and pinout as other variants in the series, differing primarily in output voltage options and package styles such as TO-220 or TO-263.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598S-3.3/NOPB is a verified equivalent variant offering identical electrical specifications in a standard D2PAK/TO-263 package configuration.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2598SX-3.3/NOPB?

The maximum input voltage supported by this regulator is 40 V.

Does the LM2598SX-3.3/NOPB include overcurrent protection?

Yes, the device incorporates internal cycle-by-cycle current limiting to protect against short circuits and overloads.