LM2598S-3.3/NOPB

$2.03

Description：IC REG BUCK 3.3V 1A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:99a8239a6895 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2598S-3.3/NOPB is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BUCK 3.3V 1A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2598S-3.3/NOPB

Description：IC REG BUCK 3.3V 1A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：4.5V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：1A
Frequency - Switching：150kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Supplier Device Package：TO-263 (DDPAK-7)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2598S-3.3/NOPB

LM2598S-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2598S-3.3/NOPB is a SIMPLE SWITCHER fixed step-down switching regulator from Texas Instruments, housed in an 8-pin TO-263 surface-mount package. It accepts input voltages between 4.5 V and 40 V to provide a stable 3.3 V output at up to 1 A. Operating with a maximum switching frequency of 173 kHz, the device integrates a fixed-frequency oscillator for simplified external component requirements. It supports operation across an extended temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates a fixed-frequency oscillator to minimize external component count
Includes internal frequency compensation for circuit stability
Features thermal shutdown protection for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

Distributed power supply systems
Point-of-load regulation modules
Standard 5V or 12V bus conversion circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer specifications. Ensure the 'S' designation matches the required TO-263 surface-mount package variant rather than through-hole options. Cross-reference the specific voltage code '3.3' to confirm the fixed output level aligns with design requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1 A current capacity suffices for the load, distinguishing it from higher-current variants like the LM2596 or LM2599 series. The fixed 3.3 V output eliminates the need for external feedback resistors, simplifying the bill of materials. Consider the 173 kHz switching frequency for balancing filter size against transient response needs in space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2598 family of monolithic integrated step-down converters designed to simplify power supply design. It provides all active functions necessary for buck converters, including driver stages for external Schottky diodes. The family is engineered for high efficiency and robust performance under varying line and load conditions within industrial and commercial environments.