LM2678SDX-3.3

$3.03

Description：IC REG BUCK 3.3V 5A 14VSON
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:91dffb8de5eb Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2678SDX-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 5A 14VSON. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2678SDX-3.3

Description：IC REG BUCK 3.3V 5A 14VSON
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tape & Reel (TR)
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：5A
Frequency - Switching：260kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：14-VDFN Exposed Pad
Supplier Device Package：14-VSON (5x6)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2678SDX-3.3

LM2678SDX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2678SDX-3.3/NOPB is a SIMPLE SWITCHER step-down DC/DC switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 8 V to 40 V and provides a fixed output voltage of 3.3 V at up to 5 A output current. The device utilizes a buck topology with a switching frequency of 260 kHz. It is housed in a VSON-14 surface-mount package and supports operation from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated high-current power switch for simplified design
Fixed internal switching frequency reduces external component count
Built-in thermal shutdown protection for reliability

Voltage Regulators - DC DC Switching Regulators Applications

Point-of-load regulation for embedded systems
Battery-powered equipment power management
Industrial control system voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number includes the /NOPB suffix to ensure lead-free compliance and specific packaging configuration. Confirm the VSON-14 package variant matches the target PCB footprint requirements. Cross-reference the datasheet revision to ensure compatibility with current design specifications and thermal performance expectations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from an 8 V to 40 V input source. The 5 A current capability suits moderate load applications. Consider the 260 kHz frequency for balancing efficiency and passive component size. Evaluate thermal dissipation needs given the VSON-14 package constraints under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2678 series of SIMPLE SWITCHER regulators, designed for high-efficiency step-down conversion. It shares architectural similarities with other variants in the family but differs in output voltage configuration and package type. The SDX designation indicates the tape-and-reel packaging format for automated assembly processes.