LM2676S-3.3

$6.48

Description：IC REG BUCK 3.3V 3A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:d6a5be1e54a8 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2676S-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 3A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2676S-3.3

Description：IC REG BUCK 3.3V 3A 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)：8V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Current - Output：3A
Frequency - Switching：260kHz
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 LM2676S-3.3

LM2676S-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676S-3.3 is a SIMPLE SWITCHER® high-efficiency 3A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides a fixed 3.3V output at up to 3A. The device utilizes a buck topology with a switching frequency of 260kHz. It features a low quiescent current of 4.2mA and supports junction temperatures from -40°C to +125°C. The component is housed in a TO-263-7 (DDPAK) package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated power switch capable of delivering 3A continuous load current
Fixed 3.3V output option eliminates external feedback resistor networks
Internal frequency compensation simplifies external component selection
Thermal shutdown and current limit protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation for embedded systems
Battery-powered equipment requiring efficient voltage conversion
Industrial control systems operating within wide input ranges
Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and RoHS status. Ensure the TO-263-7 package variant matches the target PCB footprint. Cross-reference the manufacturer part number with authorized distributors to avoid obsolete or non-compliant stock. Confirm thermal management requirements align with the specified junction temperature limits.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when a fixed 3.3V output is required from an 8V to 40V input source. The 260kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the TO-263-7 package for its thermal performance in moderate power applications. Verify that the load current does not exceed the 3A rating under maximum ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2676 series belongs to Texas Instruments' SIMPLE SWITCHER family, designed for straightforward DC-DC conversion. This specific model represents the fixed 3.3V variant within the broader LM2676 lineup, which includes adjustable and other fixed voltage options. The series is characterized by minimal external component count and integrated protection features.