LM2598S-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598S-5.0/NOPB is a SIMPLE SWITCHER® fixed step-down switching regulator from Texas Instruments, designed for high-efficiency power conversion. It operates with an input voltage range of 4.5 V to 40 V and provides a fixed 5.0 V output at a maximum current of 1 A. The device utilizes a TO-263 (D2PAK) surface-mount package with seven leads plus a tab. It features a typical switching frequency of 150 kHz, ensuring compact external component sizing. The regulator supports an operating junction temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator simplifying design by combining controller, oscillator, and power switch
• Fixed internal feedback network ensures precise output voltage regulation without external resistors
• Built-in thermal shutdown and current limiting protect against overload and overheating conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulators for linear post-regulator circuits
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer specifications. Confirm the 'S' designation indicates the TO-263 surface mount package variant. Ensure the '-5.0' identifier matches the required 5.0 V fixed output voltage. Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain consistent with current production standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from a 4.5 V to 40 V input source. The 1 A current rating suits moderate load applications where efficiency is prioritized over ultra-low quiescent current. The TO-263 package facilitates heat dissipation for continuous operation. Consider the 150 kHz switching frequency for balancing component size and electromagnetic interference performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2598 family of SIMPLE SWITCHER regulators, which are known for ease of use and robust performance. The LM2598 series offers various fixed output voltages and adjustable versions. The LM2598S variant specifically denotes the surface-mount construction, distinguishing it from through-hole alternatives like the LM2598T.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598SX-5.0/NOPB is a tape-and-reel version of the same functional device. LM2598S-5.0 is the non-RoHS equivalent predecessor. LM2598T-5.0/NOPB serves as the through-hole alternative in a TO-220 package.