LM2598S-3.3

$2.35

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

SKU:96314d291879 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2598S-3.3 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

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

LM2598S-3.3

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 achieves approximately 78% efficiency. It functions within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated monolithic buck converter topology for efficient voltage reduction
Internal fixed-frequency oscillator eliminates external timing components
Built-in thermal shutdown and current limiting for operational protection

Voltage Regulators - DC DC Switching Regulators Applications

Distributed power supply architectures requiring intermediate voltage regulation
Pre-regulation stages for linear post-regulators
Battery-powered systems utilizing higher voltage sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free composition and RoHS compliance. Confirm the 'S' designation indicates the TO-263 surface mount package variant rather than the through-hole version. Ensure the '-3.3' identifier matches the required fixed output voltage specification for the target circuit design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1 A load capacity and wide input voltage range are necessary. The TO-263 package provides adequate thermal dissipation for moderate power levels without requiring extensive heatsinking. Consider alternative packages if board space constraints or different mounting requirements exist.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2598 family of SIMPLE SWITCHER regulators, designed as drop-in replacements for older discrete solutions. It shares architectural similarities with the LM2596 but offers optimized performance for lower current applications. The series emphasizes simplified design through minimal external component counts.