LM2598S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598S-12/NOPB is a fixed-step-down switching voltage regulator from Texas Instruments, part of the SIMPLE SWITCHER family. It operates with an input voltage range of 4.5 V to 40 V and provides a fixed 12 V output at up to 1 A. The device features a typical switching frequency of 150 kHz and includes internal compensation for minimal external component requirements. It supports operation temperatures from -40 °C to +125 °C and utilizes a TO-263 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology simplifies design
• Internal frequency compensation reduces external component count
• Fixed 12 V output eliminates need for feedback resistors
• Built-in thermal shutdown protects against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures
• Pre-regulator circuits for linear regulators
• Battery-powered systems requiring step-down conversion
• General-purpose DC/DC conversion modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status per current manufacturer declarations. Confirm the 'S' designation aligns with the required TO-263 surface-mount package variant rather than through-hole or other packaging options. Cross-reference the specific revision level in the latest datasheet to ensure compatibility with existing thermal management designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from a wide input range up to 40 V. The 1 A current rating suits moderate load applications where high efficiency is prioritized over ultra-low quiescent current. Ensure the PCB layout accommodates the TO-263 package thermal pad requirements for adequate heat dissipation under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2598 series of SIMPLE SWITCHER regulators, designed for ease of use in step-down applications. It complements adjustable variants like the LM2598-ADJ and higher-current counterparts such as the LM2678 series. The family emphasizes simplified design through integrated compensation and fixed-frequency operation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2598SX-12/NOPB: Identical electrical specifications with reel packaging instead of tube.